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Glama
MarlonJD

web-debug-mcp

by MarlonJD
OverviewSchemaRelated ServersScoreDiscussions
TypeScript
Local

Read web debug session status

web_session_status
Read-onlyIdempotent

Check active web debugging sessions or retrieve one session summary, including project eligibility and live runtime capabilities.

Instructions

List active sessions or read one summary with separate project eligibility and negotiated live runtime capabilities.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sessionIdNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
okYes
dataNo
errorNo
warningsYes
artifactsYes

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. Changed4 schema fields changedv0.7.0
    • removedOutput schema / definitions / __schema1
      Removed value: -{
-  "anyOf": [
-    {
-      "type": "string"
-    },
-    {
-      "type": "number"
-    },
-    {
-      "type": "boolean"
-    },
-    {
-      "type": "null"
-    },
-    {
-      "items": {
-        "$ref": "#/definitions/__schema1"
-      },
-      "type": "array"
-    },
-    {
-      "additionalProperties": {
-        "$ref": "#/definitions/__schema1"
-      },
-      "propertyNames": {
-        "type": "string"
-      },
-      "type": "object"
-    }
-  ]
-}
    • removedOutput schema / properties / data / allOf
      Removed value: -[
-  {
-    "$ref": "#/definitions/__schema0"
-  }
-]
    • addedOutput schema / properties / data / anyOf
      Added value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "artifactDir": {
+        "maxLength": 4096,
+        "type": "string"
+      },
+      "artifactState": {
+        "enum": [
+          "retained",
+          "deleted"
+        ],
+        "type": "string"
+      },
+      "authFixture": {
+        "enum": [
+          "seeded-disposable",
+          "none"
+        ],
+        "type": "string"
+      },
+      "createdAt": {
+        "maxLength": 100,
+        "type": "string"
+      },
+      "id": {
+        "format": "uuid",
+        "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
+        "type": "string"
+      },
+      "projectCapabilities": {
+        "additionalProperties": false,
+        "properties": {
+          "angular": {
+            "type": "boolean"
+          },
+          "browserTarget": {
+            "type": "boolean"
+          },
+          "next": {
+            "type": "boolean"
+          },
+          "react": {
+            "type": "boolean"
+          },
+          "serverRuntime": {
+            "type": "boolean"
+          },
+          "vite": {
+            "type": "boolean"
+          },
+          "vue": {
+            "type": "boolean"
+          }
+        },
+        "required": [
+          "browserTarget",
+          "react",
+          "angular",
+          "vue",
+          "vite",
+          "next",
+          "serverRuntime"
+        ],
+        "type": "object"
+      },
+      "projectRoot": {
+        "maxLength": 4096,
+        "type": "string"
+      },
+      "runtimeCapabilities": {
+        "anyOf": [
+          {
+            "additionalProperties": false,
+            "properties": {
+              "accessibility": {
+                "additionalProperties": false,
+                "properties": {
+                  "provenance": {
+                    "items": {
+                      "enum": [
+                        "playwright",
+                        "chromium-cdp",
+                        "safari-webdriver",
+                        "safari-bidi",
+                        "performance-resource-timing",
+                        "session-policy",
+                        "webmcp-page-api"
+                      ],
+                      "type": "string"
+                    },
+                    "maxItems": 2,
+                    "type": "array"
+                  },
+                  "reason": {
+                    "maxLength": 500,
+                    "type": "string"
+                  },
+                  "state": {
+                    "enum": [
+                      "supported",
+                      "degraded",
+                      "unsupported"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "state",
+                  "provenance"
+                ],
+                "type": "object"
+              },
+              "actions": {
+                "additionalProperties": false,
+                "properties": {
+                  "provenance": {
+                    "items": {
+                      "enum": [
+                        "playwright",
+                        "chromium-cdp",
+                        "safari-webdriver",
+                        "safari-bidi",
+                        "performance-resource-timing",
+                        "session-policy",
+                        "webmcp-page-api"
+                      ],
+                      "type": "string"
+                    },
+                    "maxItems": 2,
+                    "type": "array"
+                  },
+                  "reason": {
+                    "maxLength": 500,
+                    "type": "string"
+                  },
+                  "state": {
+                    "enum": [
+                      "supported",
+                      "degraded",
+                      "unsupported"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "state",
+                  "provenance"
+                ],
+                "type": "object"
+              },
+              "authSeeding": {
+                "additionalProperties": false,
+                "properties": {
+                  "provenance": {
+                    "items": {
+                      "enum": [
+                        "playwright",
+                        "chromium-cdp",
+                        "safari-webdriver",
+                        "safari-bidi",
+                        "performance-resource-timing",
+                        "session-policy",
+                        "webmcp-page-api"
+                      ],
+                      "type": "string"
+                    },
+                    "maxItems": 2,
+                    "type": "array"
+                  },
+                  "reason": {
+                    "maxLength": 500,
+                    "type": "string"
+                  },
+                  "state": {
+                    "enum": [
+                      "supported",
+                      "degraded",
+                      "unsupported"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "state",
+                  "provenance"
+                ],
+                "type": "object"
+              },
+              "browser": {
+                "enum": [
+                  "chromium",
+                  "safari"
+                ],
+                "type": "string"
+              },
+              "console": {
+                "additionalProperties": false,
+                "properties": {
+                  "provenance": {
+                    "items": {
+                      "enum": [
+                        "playwright",
+                        "chromium-cdp",
+                        "safari-webdriver",
+                        "safari-bidi",
+                        "performance-resource-timing",
+                        "session-policy",
+                        "webmcp-page-api"
+                      ],
+                      "type": "string"
+                    },
+                    "maxItems": 2,
+                    "type": "array"
+                  },
+                  "reason": {
+                    "maxLength": 500,
+                    "type": "string"
+                  },
+                  "state": {
+                    "enum": [
+                      "supported",
+                      "degraded",
+                      "unsupported"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "state",
+                  "provenance"
+                ],
+                "type": "object"
+              },
+              "dom": {
+                "additionalProperties": false,
+                "properties": {
+                  "provenance": {
+                    "items": {
+                      "enum": [
+                        "playwright",
+                        "chromium-cdp",
+                        "safari-webdriver",
+                        "safari-bidi",
+                        "performance-resource-timing",
+                        "session-policy",
+                        "webmcp-page-api"
+                      ],
+                      "type": "string"
+                    },
+                    "maxItems": 2,
+                    "type": "array"
+                  },
+                  "reason": {
+                    "maxLength": 500,
+                    "type": "string"
+                  },
+                  "state": {
+                    "enum": [
+                      "supported",
+                      "degraded",
+                      "unsupported"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "state",
+                  "provenance"
+                ],
+                "type": "object"
+              },
+              "evaluation": {
+                "additionalProperties": false,
+                "properties": {
+                  "provenance": {
+                    "items": {
+                      "enum": [
+                        "playwright",
+                        "chromium-cdp",
+                        "safari-webdriver",
+                        "safari-bidi",
+                        "performance-resource-timing",
+                        "session-policy",
+                        "webmcp-page-api"
+                      ],
+                      "type": "string"
+                    },
+                    "maxItems": 2,
+                    "type": "array"
+                  },
+                  "reason": {
+                    "maxLength": 500,
+                    "type": "string"
+                  },
+                  "state": {
+                    "enum": [
+                      "supported",
+                      "degraded",
+                      "unsupported"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "state",
+                  "provenance"
+                ],
+                "type": "object"
+              },
+              "javascriptDebugger": {
+                "additionalProperties": false,
+                "properties": {
+                  "provenance": {
+                    "items": {
+                      "enum": [
+                        "playwright",
+                        "chromium-cdp",
+                        "safari-webdriver",
+                        "safari-bidi",
+                        "performance-resource-timing",
+                        "session-policy",
+                        "webmcp-page-api"
+                      ],
+                      "type": "string"
+                    },
+                    "maxItems": 2,
+                    "type": "array"
+                  },
+                  "reason": {
+                    "maxLength": 500,
+                    "type": "string"
+                  },
+                  "state": {
+                    "enum": [
+                      "supported",
+                      "degraded",
+                      "unsupported"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "state",
+                  "provenance"
+                ],
+                "type": "object"
+              },
+              "locators": {
+                "additionalProperties": false,
+                "properties": {
+                  "css": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "provenance": {
+                        "items": {
+                          "enum": [
+                            "playwright",
+                            "chromium-cdp",
+                            "safari-webdriver",
+                            "safari-bidi",
+                            "performance-resource-timing",
+                            "session-policy",
+                            "webmcp-page-api"
+                          ],
+                          "type": "string"
+                        },
+                        "maxItems": 2,
+                        "type": "array"
+                      },
+                      "reason": {
+                        "maxLength": 500,
+                        "type": "string"
+                      },
+                      "state": {
+                        "enum": [
+                          "supported",
+                          "degraded",
+                          "unsupported"
+                        ],
+                        "type": "string"
+                      }
+                    },
+                    "required": [
+                      "state",
+                      "provenance"
+                    ],
+                    "type": "object"
+                  },
+                  "semantic": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "provenance": {
+                        "items": {
+                          "enum": [
+                            "playwright",
+                            "chromium-cdp",
+                            "safari-webdriver",
+                            "safari-bidi",
+                            "performance-resource-timing",
+                            "session-policy",
+                            "webmcp-page-api"
+                          ],
+                          "type": "string"
+                        },
+                        "maxItems": 2,
+                        "type": "array"
+                      },
+                      "reason": {
+                        "maxLength": 500,
+                        "type": "string"
+                      },
+                      "state": {
+                        "enum": [
+                          "supported",
+                          "degraded",
+                          "unsupported"
+                        ],
+                        "type": "string"
+                      }
+                    },
+                    "required": [
+                      "state",
+                      "provenance"
+                    ],
+                    "type": "object"
+                  }
+                },
+                "required": [
+                  "css",
+                  "semantic"
+                ],
+                "type": "object"
+              },
+              "network": {
+                "additionalProperties": false,
+                "properties": {
+                  "provenance": {
+                    "items": {
+                      "enum": [
+                        "playwright",
+                        "chromium-cdp",
+                        "safari-webdriver",
+                        "safari-bidi",
+                        "performance-resource-timing",
+                        "session-policy",
+                        "webmcp-page-api"
+                      ],
+                      "type": "string"
+                    },
+                    "maxItems": 2,
+                    "type": "array"
+                  },
+                  "reason": {
+                    "maxLength": 500,
+                    "type": "string"
+                  },
+                  "state": {
+                    "enum": [
+                      "supported",
+                      "degraded",
+                      "unsupported"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "state",
+                  "provenance"
+                ],
+                "type": "object"
+              },
+              "pageRuntimeEnrichment": {
+                "additionalProperties": false,
+                "properties": {
+                  "provenance": {
+                    "items": {
+                      "enum": [
+                        "playwright",
+                        "chromium-cdp",
+                        "safari-webdriver",
+                        "safari-bidi",
+                        "performance-resource-timing",
+                        "session-policy",
+                        "webmcp-page-api"
+                      ],
+                      "type": "string"
+                    },
+                    "maxItems": 2,
+                    "type": "array"
+                  },
+                  "reason": {
+                    "maxLength": 500,
+                    "type": "string"
+                  },
+                  "state": {
+                    "enum": [
+                      "supported",
+                      "degraded",
+                      "unsupported"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "state",
+                  "provenance"
+                ],
+                "type": "object"
+              },
+              "schemaVersion": {
+                "const": 2,
+                "type": "number"
+              },
+              "screenshots": {
+                "additionalProperties": false,
+                "properties": {
+                  "provenance": {
+                    "items": {
+                      "enum": [
+                        "playwright",
+                        "chromium-cdp",
+                        "safari-webdriver",
+                        "safari-bidi",
+                        "performance-resource-timing",
+                        "session-policy",
+                        "webmcp-page-api"
+                      ],
+                      "type": "string"
+                    },
+                    "maxItems": 2,
+                    "type": "array"
+                  },
+                  "reason": {
+                    "maxLength": 500,
+                    "type": "string"
+                  },
+                  "state": {
+                    "enum": [
+                      "supported",
+                      "degraded",
+                      "unsupported"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "state",
+                  "provenance"
+                ],
+                "type": "object"
+              },
+              "tlsBypass": {
+                "additionalProperties": false,
+                "properties": {
+                  "provenance": {
+                    "items": {
+                      "enum": [
+                        "playwright",
+                        "chromium-cdp",
+                        "safari-webdriver",
+                        "safari-bidi",
+                        "performance-resource-timing",
+                        "session-policy",
+                        "webmcp-page-api"
+                      ],
+                      "type": "string"
+                    },
+                    "maxItems": 2,
+                    "type": "array"
+                  },
+                  "reason": {
+                    "maxLength": 500,
+                    "type": "string"
+                  },
+                  "state": {
+                    "enum": [
+                      "supported",
+                      "degraded",
+                      "unsupported"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "state",
+                  "provenance"
+                ],
+                "type": "object"
+              },
+              "transport": {
+                "enum": [
+                  "chromium-launch",
+                  "chromium-cdp-attach",
+                  "safari-webdriver"
+                ],
+                "type": "string"
+              },
+              "viewportMatrix": {
+                "additionalProperties": false,
+                "properties": {
+                  "provenance": {
+                    "items": {
+                      "enum": [
+                        "playwright",
+                        "chromium-cdp",
+                        "safari-webdriver",
+                        "safari-bidi",
+                        "performance-resource-timing",
+                        "session-policy",
+                        "webmcp-page-api"
+                      ],
+                      "type": "string"
+                    },
+                    "maxItems": 2,
+                    "type": "array"
+                  },
+                  "reason": {
+                    "maxLength": 500,
+                    "type": "string"
+                  },
+                  "state": {
+                    "enum": [
+                      "supported",
+                      "degraded",
+                      "unsupported"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "state",
+                  "provenance"
+                ],
+                "type": "object"
+              },
+              "webmcp": {
+                "additionalProperties": false,
+                "properties": {
+                  "provenance": {
+                    "items": {
+                      "enum": [
+                        "playwright",
+                        "chromium-cdp",
+                        "safari-webdriver",
+                        "safari-bidi",
+                        "performance-resource-timing",
+                        "session-policy",
+                        "webmcp-page-api"
+                      ],
+                      "type": "string"
+                    },
+                    "maxItems": 2,
+                    "type": "array"
+                  },
+                  "reason": {
+                    "maxLength": 500,
+                    "type": "string"
+                  },
+                  "state": {
+                    "enum": [
+                      "supported",
+                      "degraded",
+                      "unsupported"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "state",
+                  "provenance"
+                ],
+                "type": "object"
+              }
+            },
+            "required": [
+              "schemaVersion",
+              "browser",
+              "transport",
+              "actions",
+              "locators",
+              "dom",
+              "console",
+              "network",
+              "screenshots",
+              "javascriptDebugger",
+              "evaluation",
+              "accessibility",
+              "pageRuntimeEnrichment",
+              "viewportMatrix",
+              "tlsBypass",
+              "authSeeding",
+              "webmcp"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "schemaVersion": {
+        "const": 3,
+        "type": "number"
+      },
+      "status": {
+        "enum": [
+          "starting",
+          "ready",
+          "paused",
+          "failed",
+          "closed"
+        ],
+        "type": "string"
+      },
+      "target": {
+        "anyOf": [
+          {
+            "additionalProperties": false,
+            "properties": {
+              "browser": {
+                "enum": [
+                  "chromium",
+                  "safari"
+                ],
+                "type": "string"
+              },
+              "isolated": {
+                "type": "boolean"
+              },
+              "isolation": {
+                "additionalProperties": false,
+                "properties": {
+                  "browserProcess": {
+                    "type": "boolean"
+                  },
+                  "cache": {
+                    "type": "boolean"
+                  },
+                  "context": {
+                    "type": "boolean"
+                  },
+                  "navigation": {
+                    "type": "boolean"
+                  },
+                  "profile": {
+                    "type": "boolean"
+                  },
+                  "serverState": {
+                    "type": "boolean"
+                  },
+                  "serviceWorkers": {
+                    "type": "boolean"
+                  },
+                  "storage": {
+                    "type": "boolean"
+                  }
+                },
+                "required": [
+                  "browserProcess",
+                  "context",
+                  "profile",
+                  "storage",
+                  "cache",
+                  "serviceWorkers",
+                  "navigation",
+                  "serverState"
+                ],
+                "type": "object"
+              },
+              "mode": {
+                "enum": [
+                  "launch",
+                  "attach",
+                  "webdriver"
+                ],
+                "type": "string"
+              },
+              "remote": {
+                "type": "boolean"
+              },
+              "schemaVersion": {
+                "const": 1,
+                "type": "number"
+              },
+              "targetId": {
+                "maxLength": 200,
+                "type": "string"
+              },
+              "title": {
+                "maxLength": 300,
+                "type": "string"
+              },
+              "url": {
+                "maxLength": 2560,
+                "type": "string"
+              },
+              "viewport": {
+                "anyOf": [
+                  {
+                    "additionalProperties": false,
+                    "properties": {
+                      "height": {
+                        "maximum": 9007199254740991,
+                        "minimum": -9007199254740991,
+                        "type": "integer"
+                      },
+                      "width": {
+                        "maximum": 9007199254740991,
+                        "minimum": -9007199254740991,
+                        "type": "integer"
+                      }
+                    },
+                    "required": [
+                      "width",
+                      "height"
+                    ],
+                    "type": "object"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ]
+              }
+            },
+            "required": [
+              "schemaVersion",
+              "browser",
+              "remote",
+              "url",
+              "title",
+              "viewport",
+              "isolated"
+            ],
+            "type": "object"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "tls": {
+        "enum": [
+          "strict",
+          "allow-insecure-loopback"
+        ],
+        "type": "string"
+      },
+      "url": {
+        "maxLength": 2560,
+        "type": "string"
+      },
+      "warnings": {
+        "items": {
+          "maxLength": 500,
+          "type": "string"
+        },
+        "maxItems": 100,
+        "type": "array"
+      }
+    },
+    "required": [
+      "schemaVersion",
+      "id",
+      "projectRoot",
+      "url",
+      "status",
+      "createdAt",
+      "artifactDir",
+      "target",
+      "projectCapabilities",
+      "runtimeCapabilities",
+      "warnings"
+    ],
+    "type": "object"
+  },
+  {
+    "items": {
+      "additionalProperties": false,
+      "properties": {
+        "artifactDir": {
+          "maxLength": 4096,
+          "type": "string"
+        },
+        "artifactState": {
+          "enum": [
+            "retained",
+            "deleted"
+          ],
+          "type": "string"
+        },
+        "authFixture": {
+          "enum": [
+            "seeded-disposable",
+            "none"
+          ],
+          "type": "string"
+        },
+        "createdAt": {
+          "maxLength": 100,
+          "type": "string"
+        },
+        "id": {
+          "format": "uuid",
+          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
+          "type": "string"
+        },
+        "projectCapabilities": {
+          "additionalProperties": false,
+          "properties": {
+            "angular": {
+              "type": "boolean"
+            },
+            "browserTarget": {
+              "type": "boolean"
+            },
+            "next": {
+              "type": "boolean"
+            },
+            "react": {
+              "type": "boolean"
+            },
+            "serverRuntime": {
+              "type": "boolean"
+            },
+            "vite": {
+              "type": "boolean"
+            },
+            "vue": {
+              "type": "boolean"
+            }
+          },
+          "required": [
+            "browserTarget",
+            "react",
+            "angular",
+            "vue",
+            "vite",
+            "next",
+            "serverRuntime"
+          ],
+          "type": "object"
+        },
+        "projectRoot": {
+          "maxLength": 4096,
+          "type": "string"
+        },
+        "runtimeCapabilities": {
+          "anyOf": [
+            {
+              "additionalProperties": false,
+              "properties": {
+                "accessibility": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "provenance": {
+                      "items": {
+                        "enum": [
+                          "playwright",
+                          "chromium-cdp",
+                          "safari-webdriver",
+                          "safari-bidi",
+                          "performance-resource-timing",
+                          "session-policy",
+                          "webmcp-page-api"
+                        ],
+                        "type": "string"
+                      },
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+                      "type": "array"
+                    },
+                    "reason": {
+                      "maxLength": 500,
+                      "type": "string"
+                    },
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+                        "supported",
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+                        "unsupported"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
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+                    "provenance"
+                  ],
+                  "type": "object"
+                },
+                "actions": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "provenance": {
+                      "items": {
+                        "enum": [
+                          "playwright",
+                          "chromium-cdp",
+                          "safari-webdriver",
+                          "safari-bidi",
+                          "performance-resource-timing",
+                          "session-policy",
+                          "webmcp-page-api"
+                        ],
+                        "type": "string"
+                      },
+                      "maxItems": 2,
+                      "type": "array"
+                    },
+                    "reason": {
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+                    }
+                  },
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+                  ],
+                  "type": "object"
+                },
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+                  "additionalProperties": false,
+                  "properties": {
+                    "provenance": {
+                      "items": {
+                        "enum": [
+                          "playwright",
+                          "chromium-cdp",
+                          "safari-webdriver",
+                          "safari-bidi",
+                          "performance-resource-timing",
+                          "session-policy",
+                          "webmcp-page-api"
+                        ],
+                        "type": "string"
+                      },
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+                      "type": "array"
+                    },
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+                      "type": "string"
+                    },
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+                        "supported",
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+                  ],
+                  "type": "object"
+                },
+                "browser": {
+                  "enum": [
+                    "chromium",
+                    "safari"
+                  ],
+                  "type": "string"
+                },
+                "console": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "provenance": {
+                      "items": {
+                        "enum": [
+                          "playwright",
+                          "chromium-cdp",
+                          "safari-webdriver",
+                          "safari-bidi",
+                          "performance-resource-timing",
+                          "session-policy",
+                          "webmcp-page-api"
+                        ],
+                        "type": "string"
+                      },
+                      "maxItems": 2,
+                      "type": "array"
+                    },
+                    "reason": {
+                      "maxLength": 500,
+                      "type": "string"
+                    },
+                    "state": {
+                      "enum": [
+                        "supported",
+                        "degraded",
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+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
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+                  ],
+                  "type": "object"
+                },
+                "dom": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "provenance": {
+                      "items": {
+                        "enum": [
+                          "playwright",
+                          "chromium-cdp",
+                          "safari-webdriver",
+                          "safari-bidi",
+                          "performance-resource-timing",
+                          "session-policy",
+                          "webmcp-page-api"
+                        ],
+                        "type": "string"
+                      },
+                      "maxItems": 2,
+                      "type": "array"
+                    },
+                    "reason": {
+                      "maxLength": 500,
+                      "type": "string"
+                    },
+                    "state": {
+                      "enum": [
+                        "supported",
+                        "degraded",
+                        "unsupported"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "state",
+                    "provenance"
+                  ],
+                  "type": "object"
+                },
+                "evaluation": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "provenance": {
+                      "items": {
+                        "enum": [
+                          "playwright",
+                          "chromium-cdp",
+                          "safari-webdriver",
+                          "safari-bidi",
+                          "performance-resource-timing",
+                          "session-policy",
+                          "webmcp-page-api"
+                        ],
+                        "type": "string"
+                      },
+                      "maxItems": 2,
+                      "type": "array"
+                    },
+                    "reason": {
+                      "maxLength": 500,
+                      "type": "string"
+                    },
+                    "state": {
+                      "enum": [
+                        "supported",
+                        "degraded",
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+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "state",
+                    "provenance"
+                  ],
+                  "type": "object"
+                },
+                "javascriptDebugger": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "provenance": {
+                      "items": {
+                        "enum": [
+                          "playwright",
+                          "chromium-cdp",
+                          "safari-webdriver",
+                          "safari-bidi",
+                          "performance-resource-timing",
+                          "session-policy",
+                          "webmcp-page-api"
+                        ],
+                        "type": "string"
+                      },
+                      "maxItems": 2,
+                      "type": "array"
+                    },
+                    "reason": {
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+                      "type": "string"
+                    },
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+                      "enum": [
+                        "supported",
+                        "degraded",
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+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "state",
+                    "provenance"
+                  ],
+                  "type": "object"
+                },
+                "locators": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "css": {
+                      "additionalProperties": false,
+                      "properties": {
+                        "provenance": {
+                          "items": {
+                            "enum": [
+                              "playwright",
+                              "chromium-cdp",
+                              "safari-webdriver",
+                              "safari-bidi",
+                              "performance-resource-timing",
+                              "session-policy",
+                              "webmcp-page-api"
+                            ],
+                            "type": "string"
+                          },
+                          "maxItems": 2,
+                          "type": "array"
+                        },
+                        "reason": {
+                          "maxLength": 500,
+                          "type": "string"
+                        },
+                        "state": {
+                          "enum": [
+                            "supported",
+                            "degraded",
+                            "unsupported"
+                          ],
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "state",
+                        "provenance"
+                      ],
+                      "type": "object"
+                    },
+                    "semantic": {
+                      "additionalProperties": false,
+                      "properties": {
+                        "provenance": {
+                          "items": {
+                            "enum": [
+                              "playwright",
+                              "chromium-cdp",
+                              "safari-webdriver",
+                              "safari-bidi",
+                              "performance-resource-timing",
+                              "session-policy",
+                              "webmcp-page-api"
+                            ],
+                            "type": "string"
+                          },
+                          "maxItems": 2,
+                          "type": "array"
+                        },
+                        "reason": {
+                          "maxLength": 500,
+                          "type": "string"
+                        },
+                        "state": {
+                          "enum": [
+                            "supported",
+                            "degraded",
+                            "unsupported"
+                          ],
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "state",
+                        "provenance"
+                      ],
+                      "type": "object"
+                    }
+                  },
+                  "required": [
+                    "css",
+                    "semantic"
+                  ],
+                  "type": "object"
+                },
+                "network": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "provenance": {
+                      "items": {
+                        "enum": [
+                          "playwright",
+                          "chromium-cdp",
+                          "safari-webdriver",
+                          "safari-bidi",
+                          "performance-resource-timing",
+                          "session-policy",
+                          "webmcp-page-api"
+                        ],
+                        "type": "string"
+                      },
+                      "maxItems": 2,
+                      "type": "array"
+                    },
+                    "reason": {
+                      "maxLength": 500,
+                      "type": "string"
+                    },
+                    "state": {
+                      "enum": [
+                        "supported",
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+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "state",
+                    "provenance"
+                  ],
+                  "type": "object"
+                },
+                "pageRuntimeEnrichment": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "provenance": {
+                      "items": {
+                        "enum": [
+                          "playwright",
+                          "chromium-cdp",
+                          "safari-webdriver",
+                          "safari-bidi",
+                          "performance-resource-timing",
+                          "session-policy",
+                          "webmcp-page-api"
+                        ],
+                        "type": "string"
+                      },
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+                    },
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+                      "type": "string"
+                    },
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+                        "supported",
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+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
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+                  ],
+                  "type": "object"
+                },
+                "schemaVersion": {
+                  "const": 2,
+                  "type": "number"
+                },
+                "screenshots": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "provenance": {
+                      "items": {
+                        "enum": [
+                          "playwright",
+                          "chromium-cdp",
+                          "safari-webdriver",
+                          "safari-bidi",
+                          "performance-resource-timing",
+                          "session-policy",
+                          "webmcp-page-api"
+                        ],
+                        "type": "string"
+                      },
+                      "maxItems": 2,
+                      "type": "array"
+                    },
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+                      "maxLength": 500,
+                      "type": "string"
+                    },
+                    "state": {
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+                        "supported",
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+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "state",
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+                  ],
+                  "type": "object"
+                },
+                "tlsBypass": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "provenance": {
+                      "items": {
+                        "enum": [
+                          "playwright",
+                          "chromium-cdp",
+                          "safari-webdriver",
+                          "safari-bidi",
+                          "performance-resource-timing",
+                          "session-policy",
+                          "webmcp-page-api"
+                        ],
+                        "type": "string"
+                      },
+                      "maxItems": 2,
+                      "type": "array"
+                    },
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+                    },
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+                  "required": [
+                    "state",
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+                },
+                "transport": {
+                  "enum": [
+                    "chromium-launch",
+                    "chromium-cdp-attach",
+                    "safari-webdriver"
+                  ],
+                  "type": "string"
+                },
+                "viewportMatrix": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "provenance": {
+                      "items": {
+                        "enum": [
+                          "playwright",
+                          "chromium-cdp",
+                          "safari-webdriver",
+                          "safari-bidi",
+                          "performance-resource-timing",
+                          "session-policy",
+                          "webmcp-page-api"
+                        ],
+                        "type": "string"
+                      },
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+                    },
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+                    }
+                  },
+                  "required": [
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+                  "type": "object"
+                },
+                "webmcp": {
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+                  "properties": {
+                    "provenance": {
+                      "items": {
+                        "enum": [
+                          "playwright",
+                          "chromium-cdp",
+                          "safari-webdriver",
+                          "safari-bidi",
+                          "performance-resource-timing",
+                          "session-policy",
+                          "webmcp-page-api"
+                        ],
+                        "type": "string"
+                      },
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+                    },
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+                }
+              },
+              "required": [
+                "schemaVersion",
+                "browser",
+                "transport",
+                "actions",
+                "locators",
+                "dom",
+                "console",
+                "network",
+                "screenshots",
+                "javascriptDebugger",
+                "evaluation",
+                "accessibility",
+                "pageRuntimeEnrichment",
+                "viewportMatrix",
+                "tlsBypass",
+                "authSeeding",
+                "webmcp"
+              ],
+              "type": "object"
+            },
+            {
+              "type": "null"
+            }
+          ]
+        },
+        "schemaVersion": {
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+          "type": "number"
+        },
+        "status": {
+          "enum": [
+            "starting",
+            "ready",
+            "paused",
+            "failed",
+            "closed"
+          ],
+          "type": "string"
+        },
+        "target": {
+          "anyOf": [
+            {
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+              "properties": {
+                "browser": {
+                  "enum": [
+                    "chromium",
+                    "safari"
+                  ],
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+                },
+                "isolated": {
+                  "type": "boolean"
+                },
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+                  "additionalProperties": false,
+                  "properties": {
+                    "browserProcess": {
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+                    },
+                    "cache": {
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+                    },
+                    "navigation": {
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+                    "profile": {
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+                    },
+                    "serverState": {
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+                    "serviceWorkers": {
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+                    "storage": {
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+                    }
+                  },
+                  "required": [
+                    "browserProcess",
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+                    "cache",
+                    "serviceWorkers",
+                    "navigation",
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+                },
+                "mode": {
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+                    "launch",
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+                    "webdriver"
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+                "schemaVersion": {
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+                },
+                "targetId": {
+                  "maxLength": 200,
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+                },
+                "title": {
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+                  "type": "string"
+                },
+                "url": {
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+                  "type": "string"
+                },
+                "viewport": {
+                  "anyOf": [
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "height": {
+                          "maximum": 9007199254740991,
+                          "minimum": -9007199254740991,
+                          "type": "integer"
+                        },
+                        "width": {
+                          "maximum": 9007199254740991,
+                          "minimum": -9007199254740991,
+                          "type": "integer"
+                        }
+                      },
+                      "required": [
+                        "width",
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+                      ],
+                      "type": "object"
+                    },
+                    {
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+                    }
+                  ]
+                }
+              },
+              "required": [
+                "schemaVersion",
+                "browser",
+                "remote",
+                "url",
+                "title",
+                "viewport",
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+              ],
+              "type": "object"
+            },
+            {
+              "type": "null"
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+          ]
+        },
+        "tls": {
+          "enum": [
+            "strict",
+            "allow-insecure-loopback"
+          ],
+          "type": "string"
+        },
+        "url": {
+          "maxLength": 2560,
+          "type": "string"
+        },
+        "warnings": {
+          "items": {
+            "maxLength": 500,
+            "type": "string"
+          },
+          "maxItems": 100,
+          "type": "array"
+        }
+      },
+      "required": [
+        "schemaVersion",
+        "id",
+        "projectRoot",
+        "url",
+        "status",
+        "createdAt",
+        "artifactDir",
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+        "projectCapabilities",
+        "runtimeCapabilities",
+        "warnings"
+      ],
+      "type": "object"
+    },
+    "maxItems": 8,
+    "type": "array"
+  }
+]
    • changedOutput schema / properties / error / properties / details / allOf
      Previous value: -[
-  {
-    "$ref": "#/definitions/__schema1"
-  }
-]New value: +[
+  {
+    "$ref": "#/definitions/__schema0"
+  }
+]
  2. First observedv0.5.0-next.0

TDQS

A4.2/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint, idempotentHint, and non-destructive, so the safe-read behavior is covered. The description adds the two-mode behavior (list all vs read one) and the distinct content of the summary, which goes beyond the annotations without contradicting them.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single sentence with no filler and front-loads the core behavior. The specialized phrasing 'separate project eligibility and negotiated live runtime capabilities' is dense but not redundant.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple read-only tool with one optional parameter and an output schema, the description is complete: it states the two calling modes and what the summary contains. The output schema handles return-value details, and annotations handle safety.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema description coverage, the description compensates by tying the optional sessionId to the two modes: omission lists active sessions, providing one reads a single summary. It doesn't spell out 'optional' but the grammatical structure conveys this.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description names a specific verb and resource ('List active sessions or read one summary') and distinguishes two invocation modes, making it easy to tell apart from sibling tools like web_session_start, web_session_close, and web_debug_control. The phrase about project eligibility and negotiated runtime capabilities further specifies what kind of summary is returned.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies that omitting sessionId lists active sessions and providing it reads one summary, but it never explicitly says when to prefer this tool over siblings or states exclusions. An agent can infer the read-only inspection use case from annotations, but the description itself gives no explicit when/when-not guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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