Skip to main content
Glama
hedging8563

TokenLab MCP Server

by hedging8563
OverviewSchemaRelated ServersScoreDiscussions
JavaScript
Remote

Create message (Anthropic-compatible)

create_anthropic_message

Send a request to Anthropic's Claude models in native format to generate responses with vision and streaming capabilities.

Instructions

Create message (Anthropic-compatible) Creates a model response using Anthropic's native request format. Supports Claude models with vision and streaming. Authentication: Use x-api-key header or Authorization: Bearer header.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
modelYesModel to use (e.g., claude-sonnet-4-6)
toolsNoTool definitions available to the model.
top_kNo
top_pNo
systemNoSystem prompt
messagesYesMessages in the conversation
metadataNoRequest metadata echoed into downstream logs or traces when supported.
thinkingNoThinking configuration for compatible Anthropic-style models.
max_tokensYesMaximum number of tokens to generate
temperatureNo
tool_choiceNoTool choice policy or explicit tool selection.
service_tierNoService tier hint for compatible providers.
stop_sequencesNo
stream_optionsNoStreaming options such as usage chunk inclusion.

Schema Changelog

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

  1. Changed15 schema fields changedv0.6.4
    • removedInput schema / $schema
      Removed value: -"http://json-schema.org/draft-07/schema#"
    • removedInput schema / properties / max_tokens / maximum
      Removed value: -9007199254740991
    • removedInput schema / properties / messages / items / additionalProperties
      Removed value: -{}
    • removedInput schema / properties / messages / items / properties / content / oneOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "items": {
-      "additionalProperties": {},
-      "properties": {
-        "source": {
-          "additionalProperties": {},
-          "properties": {
-            "data": {
-              "type": "string"
-            },
-            "media_type": {
-              "type": "string"
-            },
-            "type": {
-              "enum": [
-                "base64",
-                "url"
-              ],
-              "type": "string"
-            },
-            "url": {
-              "type": "string"
-            }
-          },
-          "type": "object"
-        },
-        "text": {
-          "type": "string"
-        },
-        "type": {
-          "enum": [
-            "text",
-            "image"
-          ],
-          "type": "string"
-        }
-      },
-      "type": "object"
-    },
-    "type": "array"
-  }
-]
    • changedInput schema / properties / metadata / additionalProperties
      Previous value: -{}New value: +true
    • removedInput schema / properties / metadata / properties
      Removed value: -{}
    • removedInput schema / properties / stream
      Removed value: -{
-  "const": false,
-  "default": false,
-  "description": "MCP tool calls return one final result; omit stream or set it to false.",
-  "type": "boolean"
-}
    • changedInput schema / properties / stream_options / additionalProperties
      Previous value: -{}New value: +true
    • removedInput schema / properties / stream_options / properties
      Removed value: -{}
    • changedInput schema / properties / thinking / additionalProperties
      Previous value: -{}New value: +true
    • removedInput schema / properties / thinking / properties
      Removed value: -{}
    • changedInput schema / properties / tool_choice / oneOf
      Previous value: -[
-  {
-    "type": "string"
-  },
-  {
-    "additionalProperties": {},
-    "properties": {},
-    "type": "object"
-  }
-]New value: +[
+  {
+    "type": "string"
+  },
+  {
+    "additionalProperties": true,
+    "type": "object"
+  }
+]
    • changedInput schema / properties / tools / items / additionalProperties
      Previous value: -{}New value: +true
    • removedInput schema / properties / tools / items / properties
      Removed value: -{}
    • removedInput schema / properties / top_k / maximum
      Removed value: -9007199254740991
  2. Changed25 schema fields changedv0.3.1
    • addedInput schema / additionalProperties
      Added value: +false
    • removedInput schema / properties / max_tokens / default
      Removed value: -512
    • changedInput schema / properties / max_tokens / description
      Previous value: -"Maximum output tokens."New value: +"Maximum number of tokens to generate"
    • changedInput schema / properties / messages / description
      Previous value: -"Native Anthropic conversation messages."New value: +"Messages in the conversation"
    • addedInput schema / properties / messages / items / additionalProperties
      Added value: +{}
    • removedInput schema / properties / messages / items / properties / content / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "items": {
-      "additionalProperties": {},
-      "properties": {},
-      "type": "object"
-    },
-    "minItems": 1,
-    "type": "array"
-  }
-]
    • addedInput schema / properties / messages / items / properties / content / oneOf
      Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "items": {
+      "additionalProperties": {},
+      "properties": {
+        "source": {
+          "additionalProperties": {},
+          "properties": {
+            "data": {
+              "type": "string"
+            },
+            "media_type": {
+              "type": "string"
+            },
+            "type": {
+              "enum": [
+                "base64",
+                "url"
+              ],
+              "type": "string"
+            },
+            "url": {
+              "type": "string"
+            }
+          },
+          "type": "object"
+        },
+        "text": {
+          "type": "string"
+        },
+        "type": {
+          "enum": [
+            "text",
+            "image"
+          ],
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
+    "type": "array"
+  }
+]
    • removedInput schema / properties / messages / minItems
      Removed value: -1
    • changedInput schema / properties / metadata / description
      Previous value: -"Optional request metadata."New value: +"Request metadata echoed into downstream logs or traces when supported."
    • changedInput schema / properties / model / description
      Previous value: -"Public TokenLab Claude-compatible model ID."New value: +"Model to use (e.g., claude-sonnet-4-6)"
    • removedInput schema / properties / model / minLength
      Removed value: -1
    • removedInput schema / properties / prompt
      Removed value: -{
-  "description": "Convenience shortcut for one user text message; do not combine with messages.",
-  "minLength": 1,
-  "type": "string"
-}
    • changedInput schema / properties / service_tier / description
      Previous value: -"Optional service-tier hint."New value: +"Service tier hint for compatible providers."
    • removedInput schema / properties / stop_sequences / description
      Removed value: -"Optional stop sequences."
    • addedInput schema / properties / stream
      Added value: +{
+  "const": false,
+  "default": false,
+  "description": "MCP tool calls return one final result; omit stream or set it to false.",
+  "type": "boolean"
+}
    • addedInput schema / properties / stream_options
      Added value: +{
+  "additionalProperties": {},
+  "description": "Streaming options such as usage chunk inclusion.",
+  "properties": {},
+  "type": "object"
+}
    • changedInput schema / properties / system / description
      Previous value: -"Optional system prompt."New value: +"System prompt"
    • removedInput schema / properties / temperature / description
      Removed value: -"Optional sampling temperature."
    • changedInput schema / properties / thinking / description
      Previous value: -"Thinking configuration for compatible models."New value: +"Thinking configuration for compatible Anthropic-style models."
    • removedInput schema / properties / tool_choice / anyOf
      Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "additionalProperties": {},
-    "properties": {},
-    "type": "object"
-  }
-]
    • addedInput schema / properties / tool_choice / oneOf
      Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "additionalProperties": {},
+    "properties": {},
+    "type": "object"
+  }
+]
    • changedInput schema / properties / tools / description
      Previous value: -"Native Anthropic tool definitions."New value: +"Tool definitions available to the model."
    • removedInput schema / properties / top_k / description
      Removed value: -"Optional top-k sampling cutoff."
    • removedInput schema / properties / top_p / description
      Removed value: -"Optional nucleus sampling probability."
    • changedInput schema / required
      Previous value: -[
-  "model"
-]New value: +[
+  "model",
+  "max_tokens",
+  "messages"
+]
  3. Changed13 schema fields changedv0.3.0
    • changedInput schema / properties / max_tokens / maximum
      Previous value: -8192New value: +9007199254740991
    • addedInput schema / properties / messages
      Added value: +{
+  "description": "Native Anthropic conversation messages.",
+  "items": {
+    "properties": {
+      "content": {
+        "anyOf": [
+          {
+            "type": "string"
+          },
+          {
+            "items": {
+              "additionalProperties": {},
+              "properties": {},
+              "type": "object"
+            },
+            "minItems": 1,
+            "type": "array"
+          }
+        ]
+      },
+      "role": {
+        "enum": [
+          "user",
+          "assistant"
+        ],
+        "type": "string"
+      }
+    },
+    "required": [
+      "role",
+      "content"
+    ],
+    "type": "object"
+  },
+  "minItems": 1,
+  "type": "array"
+}
    • addedInput schema / properties / metadata
      Added value: +{
+  "additionalProperties": {},
+  "description": "Optional request metadata.",
+  "properties": {},
+  "type": "object"
+}
    • changedInput schema / properties / prompt / description
      Previous value: -"User prompt text."New value: +"Convenience shortcut for one user text message; do not combine with messages."
    • addedInput schema / properties / service_tier
      Added value: +{
+  "description": "Optional service-tier hint.",
+  "type": "string"
+}
    • addedInput schema / properties / stop_sequences
      Added value: +{
+  "description": "Optional stop sequences.",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}
    • addedInput schema / properties / temperature
      Added value: +{
+  "description": "Optional sampling temperature.",
+  "maximum": 1,
+  "minimum": 0,
+  "type": "number"
+}
    • addedInput schema / properties / thinking
      Added value: +{
+  "additionalProperties": {},
+  "description": "Thinking configuration for compatible models.",
+  "properties": {},
+  "type": "object"
+}
    • addedInput schema / properties / tool_choice
      Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "additionalProperties": {},
+      "properties": {},
+      "type": "object"
+    }
+  ],
+  "description": "Tool choice policy or explicit tool selection."
+}
    • addedInput schema / properties / tools
      Added value: +{
+  "description": "Native Anthropic tool definitions.",
+  "items": {
+    "additionalProperties": {},
+    "properties": {},
+    "type": "object"
+  },
+  "type": "array"
+}
    • addedInput schema / properties / top_k
      Added value: +{
+  "description": "Optional top-k sampling cutoff.",
+  "maximum": 9007199254740991,
+  "minimum": 1,
+  "type": "integer"
+}
    • addedInput schema / properties / top_p
      Added value: +{
+  "description": "Optional nucleus sampling probability.",
+  "maximum": 1,
+  "minimum": 0,
+  "type": "number"
+}
    • changedInput schema / required
      Previous value: -[
-  "model",
-  "prompt"
-]New value: +[
+  "model"
+]
  4. First observedv0.2.0

TDQS

A4.1/5.0
Behavior4/5

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

Discloses authentication method and support for vision/streaming beyond annotations. However, does not describe response format, side effects of repeated calls, or rate limits, which would add further value.

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?

Three sentences covering purpose, capabilities, and authentication with no redundancy. Every sentence adds value, making it highly efficient.

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

Completeness3/5

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

Adequate for a complex tool with 14 parameters and no output schema, but missing details on response format, error handling, and how to construct nested inputs like messages and tools. More context would improve completeness.

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 71% schema coverage, descriptions cover most parameters. The description adds context about vision and streaming, hinting at relevant parameters, but does not explain all complex nested object structures in detail.

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?

Clearly states it creates an Anthropic-compatible message using native format. Differentiates from siblings like create_chat_completion (OpenAI) and create_gemini_content by specifying Anthropic's format and Claude models.

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?

Implies usage for Anthropic models with vision and streaming, but does not explicitly state when to use this tool over alternatives or provide exclusions. Lacks explicit 'when-not-to-use' guidance.

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

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/hedging8563/tokenlab-mcp-server'

If you have feedback or need assistance with the MCP directory API, please join our Discord server