Letta · Schema

MCPTool

A simple wrapper around MCP's tool definition (to avoid conflict with our own)

Artificial IntelligenceAgentsStateful AgentsMemoryMemGPTContinual LearningMCPMulti-AgentRAGOpen-Source

Properties

Name Type Description
name string
title object
description object
inputSchema object
outputSchema object
annotations object
_meta object
health object Schema health status for OpenAI strict mode
View JSON Schema on GitHub

JSON Schema

letta-mcptool-schema.json Raw ↑
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/MCPTool",
  "title": "MCPTool",
  "properties": {
    "name": {
      "type": "string",
      "title": "Name"
    },
    "title": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "title": "Title"
    },
    "description": {
      "anyOf": [
        {
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "title": "Description"
    },
    "inputSchema": {
      "additionalProperties": true,
      "type": "object",
      "title": "Inputschema"
    },
    "outputSchema": {
      "anyOf": [
        {
          "additionalProperties": true,
          "type": "object"
        },
        {
          "type": "null"
        }
      ],
      "title": "Outputschema"
    },
    "annotations": {
      "anyOf": [
        {
          "$ref": "#/components/schemas/ToolAnnotations"
        },
        {
          "type": "null"
        }
      ]
    },
    "_meta": {
      "anyOf": [
        {
          "additionalProperties": true,
          "type": "object"
        },
        {
          "type": "null"
        }
      ],
      "title": "Meta"
    },
    "health": {
      "anyOf": [
        {
          "$ref": "#/components/schemas/MCPToolHealth"
        },
        {
          "type": "null"
        }
      ],
      "description": "Schema health status for OpenAI strict mode"
    }
  },
  "additionalProperties": true,
  "type": "object",
  "required": [
    "name",
    "inputSchema"
  ],
  "description": "A simple wrapper around MCP's tool definition (to avoid conflict with our own)"
}

Work with this as data

Every JSON Schema here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for schemas

4 MCP tools reach this
  • find_json_schemasBrowse and filter every JSON Schema in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This JSON Schema
curl "https://apis.io/api/v1/json-schemas/letta-mcptool"
All schemas
curl "https://apis.io/api/v1/json-schemas?limit=25"

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