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Glama

Keyboardia

by io.github.adewale

Edit Keyboardia session

edit_session
DestructiveIdempotent

Make one narrow, retry-safe edit to an existing collaborative session. After every attempt, the next Keyboardia call must be get_session for the same session. A successful call includes a backwards-compatible compact snapshot plus an acknowledgement. That snapshot is not authoritative verification; do not make another edit or finish from it. Read with get_session next. Supported operations: add_track, set_track_instrument, set_track_pan, set_steps, and set_tempo. set_steps changes only the named steps; it never replaces a track or session. set_track_instrument replaces only a track's sound source, keeping its pattern, mix, timing, and custom name.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
editYesExactly one narrow session edit.
session_idYesThe UUID after /s/ in a Keyboardia share URL. Pass only the UUID, not the full URL.

Schema Changelog

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

  1. Changed1 schema field changed
    • changedInput schema / properties / edit / oneOf
      Previous value: -[
-  {
-    "additionalProperties": false,
-    "description": "Add one track. Retrying the same track_id and definition is a no-op; a conflicting reuse is rejected.",
-    "properties": {
-      "name": {
-        "description": "Optional display name. The instrument name is used when omitted.",
-        "maxLength": 32,
-        "minLength": 1,
-        "type": "string"
-      },
-      "operation": {
-        "const": "add_track",
-        "type": "string"
-      },
-      "sample_id": {
-        "description": "The canonical Keyboardia instrument ID. Use one of the enumerated values exactly.",
-        "enum": [
-          "advanced:acid-bass",
-          "advanced:sub-bass",
-          "advanced:supersaw",
-          "advanced:thick-lead",
-          "advanced:tremolo-strings",
-          "advanced:vibrato-lead",
-          "advanced:warm-pad",
-          "advanced:wobble-bass",
-          "bass",
-          "cabasa",
-          "chord",
-          "clap",
-          "clave",
-          "conga",
-          "cowbell",
-          "hihat",
-          "kick",
-          "lead",
-          "noise",
-          "openhat",
-          "pad",
-          "pluck",
-          "rim",
-          "sampled:808-clap",
-          "sampled:808-hihat-closed",
-          "sampled:808-hihat-open",
-          "sampled:808-kick",
-          "sampled:808-snare",
-          "sampled:acoustic-crash",
-          "sampled:acoustic-guitar",
-          "sampled:acoustic-hihat-closed",
-          "sampled:acoustic-hihat-open",
-          "sampled:acoustic-kick",
-          "sampled:acoustic-ride",
-          "sampled:acoustic-snare",
-          "sampled:alto-sax",
-          "sampled:brushes-snare",
-          "sampled:clean-guitar",
-          "sampled:finger-bass",
-          "sampled:french-horn",
-          "sampled:hammond-organ",
-          "sampled:kalimba",
-          "sampled:marimba",
-          "sampled:piano",
-          "sampled:slap-bass",
-          "sampled:steel-drums",
-          "sampled:string-section",
-          "sampled:vibraphone",
-          "sampled:vinyl-crackle",
-          "shaker",
-          "snare",
-          "subbass",
-          "synth:acid",
-          "synth:bass",
-          "synth:bell",
-          "synth:brass",
-          "synth:clavinet",
-          "synth:discobass",
-          "synth:dreampop",
-          "synth:epiano",
-          "synth:evolving",
-          "synth:funkbass",
-          "synth:glass",
-          "synth:growl",
-          "synth:hoover",
-          "synth:hypersaw",
-          "synth:jangle",
-          "synth:lead",
-          "synth:organ",
-          "synth:organphase",
-          "synth:pad",
-          "synth:pluck",
-          "synth:reese",
-          "synth:rhodes",
-          "synth:shimmer",
-          "synth:stab",
-          "synth:strings",
-          "synth:sub",
-          "synth:supersaw",
-          "synth:sweep",
-          "synth:vibes",
-          "synth:warmpad",
-          "synth:wobble",
-          "synth:wurlitzer",
-          "tambourine",
-          "tom",
-          "tone:am-bell",
-          "tone:am-tremolo",
-          "tone:duo-lead",
-          "tone:fm-bass",
-          "tone:fm-bell",
-          "tone:fm-epiano",
-          "tone:membrane-kick",
-          "tone:membrane-tom",
-          "tone:metal-cymbal",
-          "tone:metal-hihat",
-          "tone:pluck-string",
-          "woodblock",
-          "zap"
-        ],
-        "type": "string"
-      },
-      "track_id": {
-        "description": "Generate a fresh collision-resistant ID that ends with at least eight hexadecimal characters, such as agent-kick-a7f3c29d. Generate it once and reuse it on retries.",
-        "pattern": "^(?=.{10,64}$)[A-Za-z0-9][A-Za-z0-9._-]*-[0-9a-fA-F]{8,32}$",
-        "type": "string"
-      }
-    },
-    "required": [
-      "operation",
-      "track_id",
-      "sample_id"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Replace only an existing track's sound source while preserving its name, pattern, mix, and timing.",
-    "properties": {
-      "operation": {
-        "const": "set_track_instrument",
-        "type": "string"
-      },
-      "sample_id": {
-        "description": "The canonical Keyboardia instrument ID. Use one of the enumerated values exactly.",
-        "enum": [
-          "advanced:acid-bass",
-          "advanced:sub-bass",
-          "advanced:supersaw",
-          "advanced:thick-lead",
-          "advanced:tremolo-strings",
-          "advanced:vibrato-lead",
-          "advanced:warm-pad",
-          "advanced:wobble-bass",
-          "bass",
-          "cabasa",
-          "chord",
-          "clap",
-          "clave",
-          "conga",
-          "cowbell",
-          "hihat",
-          "kick",
-          "lead",
-          "noise",
-          "openhat",
-          "pad",
-          "pluck",
-          "rim",
-          "sampled:808-clap",
-          "sampled:808-hihat-closed",
-          "sampled:808-hihat-open",
-          "sampled:808-kick",
-          "sampled:808-snare",
-          "sampled:acoustic-crash",
-          "sampled:acoustic-guitar",
-          "sampled:acoustic-hihat-closed",
-          "sampled:acoustic-hihat-open",
-          "sampled:acoustic-kick",
-          "sampled:acoustic-ride",
-          "sampled:acoustic-snare",
-          "sampled:alto-sax",
-          "sampled:brushes-snare",
-          "sampled:clean-guitar",
-          "sampled:finger-bass",
-          "sampled:french-horn",
-          "sampled:hammond-organ",
-          "sampled:kalimba",
-          "sampled:marimba",
-          "sampled:piano",
-          "sampled:slap-bass",
-          "sampled:steel-drums",
-          "sampled:string-section",
-          "sampled:vibraphone",
-          "sampled:vinyl-crackle",
-          "shaker",
-          "snare",
-          "subbass",
-          "synth:acid",
-          "synth:bass",
-          "synth:bell",
-          "synth:brass",
-          "synth:clavinet",
-          "synth:discobass",
-          "synth:dreampop",
-          "synth:epiano",
-          "synth:evolving",
-          "synth:funkbass",
-          "synth:glass",
-          "synth:growl",
-          "synth:hoover",
-          "synth:hypersaw",
-          "synth:jangle",
-          "synth:lead",
-          "synth:organ",
-          "synth:organphase",
-          "synth:pad",
-          "synth:pluck",
-          "synth:reese",
-          "synth:rhodes",
-          "synth:shimmer",
-          "synth:stab",
-          "synth:strings",
-          "synth:sub",
-          "synth:supersaw",
-          "synth:sweep",
-          "synth:vibes",
-          "synth:warmpad",
-          "synth:wobble",
-          "synth:wurlitzer",
-          "tambourine",
-          "tom",
-          "tone:am-bell",
-          "tone:am-tremolo",
-          "tone:duo-lead",
-          "tone:fm-bass",
-          "tone:fm-bell",
-          "tone:fm-epiano",
-          "tone:membrane-kick",
-          "tone:membrane-tom",
-          "tone:metal-cymbal",
-          "tone:metal-hihat",
-          "tone:pluck-string",
-          "woodblock",
-          "zap"
-        ],
-        "type": "string"
-      },
-      "track_id": {
-        "description": "For add_track, choose a stable unique ID and reuse it on retries. For set_steps or set_track_instrument, copy an existing track_id from get_session.",
-        "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$",
-        "type": "string"
-      }
-    },
-    "required": [
-      "operation",
-      "track_id",
-      "sample_id"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Change only the listed steps on an existing track. Read get_session first to obtain its track_id and step_count.",
-    "properties": {
-      "changes": {
-        "description": "Assignments for named steps only. Every unmentioned step is preserved.",
-        "items": {
-          "additionalProperties": false,
-          "properties": {
-            "step": {
-              "description": "Zero-based step index. It must be within this track's current step_count.",
-              "maximum": 127,
-              "minimum": 0,
-              "type": "integer"
-            },
-            "value": {
-              "description": "true activates the step; false clears it.",
-              "type": "boolean"
-            }
-          },
-          "required": [
-            "step",
-            "value"
-          ],
-          "type": "object"
-        },
-        "maxItems": 128,
-        "minItems": 1,
-        "type": "array"
-      },
-      "operation": {
-        "const": "set_steps",
-        "type": "string"
-      },
-      "track_id": {
-        "description": "For add_track, choose a stable unique ID and reuse it on retries. For set_steps or set_track_instrument, copy an existing track_id from get_session.",
-        "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$",
-        "type": "string"
-      }
-    },
-    "required": [
-      "operation",
-      "track_id",
-      "changes"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Set the session-wide tempo without changing any track.",
-    "properties": {
-      "operation": {
-        "const": "set_tempo",
-        "type": "string"
-      },
-      "tempo": {
-        "description": "Session tempo in beats per minute (60-180).",
-        "maximum": 180,
-        "minimum": 60,
-        "type": "number"
-      }
-    },
-    "required": [
-      "operation",
-      "tempo"
-    ],
-    "type": "object"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "description": "Add one track. Retrying the same track_id and definition is a no-op; a conflicting reuse is rejected.",
+    "properties": {
+      "name": {
+        "description": "Optional display name. The instrument name is used when omitted.",
+        "maxLength": 32,
+        "minLength": 1,
+        "type": "string"
+      },
+      "operation": {
+        "const": "add_track",
+        "type": "string"
+      },
+      "sample_id": {
+        "description": "The canonical Keyboardia instrument ID. Use one of the enumerated values exactly.",
+        "enum": [
+          "advanced:acid-bass",
+          "advanced:sub-bass",
+          "advanced:supersaw",
+          "advanced:thick-lead",
+          "advanced:tremolo-strings",
+          "advanced:vibrato-lead",
+          "advanced:warm-pad",
+          "advanced:wobble-bass",
+          "bass",
+          "cabasa",
+          "chord",
+          "clap",
+          "clave",
+          "conga",
+          "cowbell",
+          "hihat",
+          "kick",
+          "lead",
+          "noise",
+          "openhat",
+          "pad",
+          "pluck",
+          "rim",
+          "sampled:808-clap",
+          "sampled:808-hihat-closed",
+          "sampled:808-hihat-open",
+          "sampled:808-kick",
+          "sampled:808-snare",
+          "sampled:acoustic-crash",
+          "sampled:acoustic-guitar",
+          "sampled:acoustic-hihat-closed",
+          "sampled:acoustic-hihat-open",
+          "sampled:acoustic-kick",
+          "sampled:acoustic-ride",
+          "sampled:acoustic-snare",
+          "sampled:alto-sax",
+          "sampled:brushes-snare",
+          "sampled:clean-guitar",
+          "sampled:finger-bass",
+          "sampled:french-horn",
+          "sampled:hammond-organ",
+          "sampled:kalimba",
+          "sampled:marimba",
+          "sampled:piano",
+          "sampled:slap-bass",
+          "sampled:steel-drums",
+          "sampled:string-section",
+          "sampled:vibraphone",
+          "sampled:vinyl-crackle",
+          "shaker",
+          "snare",
+          "subbass",
+          "synth:acid",
+          "synth:bass",
+          "synth:bell",
+          "synth:brass",
+          "synth:clavinet",
+          "synth:discobass",
+          "synth:dreampop",
+          "synth:epiano",
+          "synth:evolving",
+          "synth:funkbass",
+          "synth:glass",
+          "synth:growl",
+          "synth:hoover",
+          "synth:hypersaw",
+          "synth:jangle",
+          "synth:lead",
+          "synth:organ",
+          "synth:organphase",
+          "synth:pad",
+          "synth:pluck",
+          "synth:reese",
+          "synth:rhodes",
+          "synth:shimmer",
+          "synth:stab",
+          "synth:strings",
+          "synth:sub",
+          "synth:supersaw",
+          "synth:sweep",
+          "synth:vibes",
+          "synth:warmpad",
+          "synth:wobble",
+          "synth:wurlitzer",
+          "tambourine",
+          "tom",
+          "tone:am-bell",
+          "tone:am-tremolo",
+          "tone:duo-lead",
+          "tone:fm-bass",
+          "tone:fm-bell",
+          "tone:fm-epiano",
+          "tone:membrane-kick",
+          "tone:membrane-tom",
+          "tone:metal-cymbal",
+          "tone:metal-hihat",
+          "tone:pluck-string",
+          "woodblock",
+          "zap"
+        ],
+        "type": "string"
+      },
+      "track_id": {
+        "description": "Generate a fresh collision-resistant ID that ends with at least eight hexadecimal characters, such as agent-kick-a7f3c29d. Generate it once and reuse it on retries.",
+        "pattern": "^(?=.{10,64}$)[A-Za-z0-9][A-Za-z0-9._-]*-[0-9a-fA-F]{8,32}$",
+        "type": "string"
+      }
+    },
+    "required": [
+      "operation",
+      "track_id",
+      "sample_id"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Replace only an existing track's sound source while preserving its name, pattern, mix, and timing.",
+    "properties": {
+      "operation": {
+        "const": "set_track_instrument",
+        "type": "string"
+      },
+      "sample_id": {
+        "description": "The canonical Keyboardia instrument ID. Use one of the enumerated values exactly.",
+        "enum": [
+          "advanced:acid-bass",
+          "advanced:sub-bass",
+          "advanced:supersaw",
+          "advanced:thick-lead",
+          "advanced:tremolo-strings",
+          "advanced:vibrato-lead",
+          "advanced:warm-pad",
+          "advanced:wobble-bass",
+          "bass",
+          "cabasa",
+          "chord",
+          "clap",
+          "clave",
+          "conga",
+          "cowbell",
+          "hihat",
+          "kick",
+          "lead",
+          "noise",
+          "openhat",
+          "pad",
+          "pluck",
+          "rim",
+          "sampled:808-clap",
+          "sampled:808-hihat-closed",
+          "sampled:808-hihat-open",
+          "sampled:808-kick",
+          "sampled:808-snare",
+          "sampled:acoustic-crash",
+          "sampled:acoustic-guitar",
+          "sampled:acoustic-hihat-closed",
+          "sampled:acoustic-hihat-open",
+          "sampled:acoustic-kick",
+          "sampled:acoustic-ride",
+          "sampled:acoustic-snare",
+          "sampled:alto-sax",
+          "sampled:brushes-snare",
+          "sampled:clean-guitar",
+          "sampled:finger-bass",
+          "sampled:french-horn",
+          "sampled:hammond-organ",
+          "sampled:kalimba",
+          "sampled:marimba",
+          "sampled:piano",
+          "sampled:slap-bass",
+          "sampled:steel-drums",
+          "sampled:string-section",
+          "sampled:vibraphone",
+          "sampled:vinyl-crackle",
+          "shaker",
+          "snare",
+          "subbass",
+          "synth:acid",
+          "synth:bass",
+          "synth:bell",
+          "synth:brass",
+          "synth:clavinet",
+          "synth:discobass",
+          "synth:dreampop",
+          "synth:epiano",
+          "synth:evolving",
+          "synth:funkbass",
+          "synth:glass",
+          "synth:growl",
+          "synth:hoover",
+          "synth:hypersaw",
+          "synth:jangle",
+          "synth:lead",
+          "synth:organ",
+          "synth:organphase",
+          "synth:pad",
+          "synth:pluck",
+          "synth:reese",
+          "synth:rhodes",
+          "synth:shimmer",
+          "synth:stab",
+          "synth:strings",
+          "synth:sub",
+          "synth:supersaw",
+          "synth:sweep",
+          "synth:vibes",
+          "synth:warmpad",
+          "synth:wobble",
+          "synth:wurlitzer",
+          "tambourine",
+          "tom",
+          "tone:am-bell",
+          "tone:am-tremolo",
+          "tone:duo-lead",
+          "tone:fm-bass",
+          "tone:fm-bell",
+          "tone:fm-epiano",
+          "tone:membrane-kick",
+          "tone:membrane-tom",
+          "tone:metal-cymbal",
+          "tone:metal-hihat",
+          "tone:pluck-string",
+          "woodblock",
+          "zap"
+        ],
+        "type": "string"
+      },
+      "track_id": {
+        "description": "For add_track, choose a stable unique ID and reuse it on retries. For set_steps, set_track_instrument, or set_track_pan, copy an existing track_id from get_session.",
+        "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$",
+        "type": "string"
+      }
+    },
+    "required": [
+      "operation",
+      "track_id",
+      "sample_id"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Set one existing track's normalized stereo position without changing its notes or level.",
+    "properties": {
+      "operation": {
+        "const": "set_track_pan",
+        "type": "string"
+      },
+      "pan": {
+        "description": "Normalized equal-power stereo position: -1 left, 0 center, 1 right.",
+        "maximum": 1,
+        "minimum": -1,
+        "type": "number"
+      },
+      "track_id": {
+        "description": "For add_track, choose a stable unique ID and reuse it on retries. For set_steps, set_track_instrument, or set_track_pan, copy an existing track_id from get_session.",
+        "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$",
+        "type": "string"
+      }
+    },
+    "required": [
+      "operation",
+      "track_id",
+      "pan"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Change only the listed steps on an existing track. Read get_session first to obtain its track_id and step_count.",
+    "properties": {
+      "changes": {
+        "description": "Assignments for named steps only. Every unmentioned step is preserved.",
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "step": {
+              "description": "Zero-based step index. It must be within this track's current step_count.",
+              "maximum": 127,
+              "minimum": 0,
+              "type": "integer"
+            },
+            "value": {
+              "description": "true activates the step; false clears it.",
+              "type": "boolean"
+            }
+          },
+          "required": [
+            "step",
+            "value"
+          ],
+          "type": "object"
+        },
+        "maxItems": 128,
+        "minItems": 1,
+        "type": "array"
+      },
+      "operation": {
+        "const": "set_steps",
+        "type": "string"
+      },
+      "track_id": {
+        "description": "For add_track, choose a stable unique ID and reuse it on retries. For set_steps, set_track_instrument, or set_track_pan, copy an existing track_id from get_session.",
+        "pattern": "^[A-Za-z0-9][A-Za-z0-9._-]{0,63}$",
+        "type": "string"
+      }
+    },
+    "required": [
+      "operation",
+      "track_id",
+      "changes"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Set the session-wide tempo without changing any track.",
+    "properties": {
+      "operation": {
+        "const": "set_tempo",
+        "type": "string"
+      },
+      "tempo": {
+        "description": "Session tempo in beats per minute (60-180).",
+        "maximum": 180,
+        "minimum": 60,
+        "type": "number"
+      }
+    },
+    "required": [
+      "operation",
+      "tempo"
+    ],
+    "type": "object"
+  }
+]
  2. First observed

TDQS

A4.9/5.0
Behavior5/5

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

Beyond the idempotentHint and destructiveHint annotations, the description reveals that the response snapshot is not authoritative verification and that a get_session call is mandatory next. It also clarifies operation-specific scopes, e.g., set_steps never replaces a track or session and set_track_instrument preserves pattern/mix/timing/name. This substantially enriches the annotation flags with actionable constraints.

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

Conciseness5/5

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

The description is six dense, well-ordered sentences: purpose, follow-up protocol, snapshot caveat, supported operations, and two clarifying operation semantics. Every sentence adds value beyond the schema, and the most critical constraint (next call must be get_session) appears early.

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?

The tool has high complexity with five edit variants, but the schema richly documents each variant. The description fills the remaining gap by explaining the response snapshot's non-authoritative nature and the required follow-up call, which is sufficient for safe usage despite the absence of an output schema.

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?

The schema already covers all parameters at 100%, providing a strong baseline. The description adds behavior-level meaning for edit variants, such as 'set_steps changes only the named steps; it never replaces a track or session' and 'set_track_instrument replaces only a track's sound source,' which helps the agent infer parameter effects beyond raw schema constraints.

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 opens with 'Make one narrow, retry-safe edit to an existing collaborative session,' a precise verb+resource+scope statement. It lists the five supported operations (add_track, set_track_instrument, set_track_pan, set_steps, set_tempo), clearly distinguishing this mutation tool from siblings like get_session or create_session.

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

Usage Guidelines5/5

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

It explicitly states when to use this tool ('edit to an existing collaborative session') and provides an explicit follow-up protocol: 'After every attempt, the next Keyboardia call must be get_session for the same session.' It also gives a when-not directive ('do not make another edit or finish from it') and names the alternative read tool ('Read with get_session next').

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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TDQS

A4.4/5.0
Disambiguation5/5

Each tool targets a distinct action: analyze, create, edit, export, get, publish, and remix. Even similar actions like create versus publish are clearly separated by whether the result is editable or immutable.

Naming Consistency5/5

All tool names follow a consistent verb_noun pattern with clear, domain-appropriate verbs (analyze, create, edit, export, get, publish, remix). The naming is uniform and predictable.

Tool Count5/5

Seven tools is well-scoped for the session lifecycle: create, read, edit, export, publish, remix, and analyze. There are no redundant tools and the count feels appropriate for the domain.

Completeness4/5

The tool set covers the core session lifecycle well, including editing, publishing, remixing, and exporting. A minor gap is the lack of a delete or list operation, but these may be handled outside the server or are not essential for the intended workflow.

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