{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/fern/main/json-schema/fern-mcp-tool-schema.json",
  "title": "Fern MCP Tool Invocation",
  "description": "Schema describing a Model Context Protocol tool call exposed by the Fern MCP server (e.g. ask_fern_ai).",
  "type": "object",
  "required": ["tool", "input"],
  "properties": {
    "tool": {
      "type": "string",
      "description": "Name of the MCP tool to invoke.",
      "enum": ["ask_fern_ai"]
    },
    "input": {
      "type": "object",
      "required": ["query"],
      "properties": {
        "query": {
          "type": "string",
          "description": "Natural-language question routed to the Ask Fern AI knowledge base."
        },
        "docsSite": {
          "type": "string",
          "description": "Optional Fern docs site slug to scope the query."
        }
      }
    },
    "transport": {
      "type": "string",
      "enum": ["stdio", "http"],
      "description": "MCP transport used by the calling client."
    },
    "client": {
      "type": "string",
      "enum": ["claude-desktop", "claude-code", "cursor", "windsurf", "other"],
      "description": "Calling AI client."
    }
  }
}