UCSC Genome Browser MCP Server

Instructions

Implementation Reference

• ucsc-genome-mcp.py:402-409 (handler)

  Handler logic for the 'list_schema' tool: constructs parameters from arguments (genome, track, optional hubUrl) and makes an API request to the UCSC Genome Browser's /list/schema endpoint.

  elif name == "list_schema":
      params = {
          "genome": arguments["genome"],
          "track": arguments["track"],
          "hubUrl": arguments.get("hub_url")
      }
      url = build_api_url("/list/schema", params)
      result = await make_api_request(url)

• ucsc-genome-mcp.py:214-230 (schema)

  Input schema defining the parameters for the list_schema tool: required genome and track strings, optional hub_url.

  inputSchema={
      "type": "object",
      "properties": {
          "genome": {
              "type": "string",
              "description": "Genome assembly name"
          },
          "track": {
              "type": "string",
              "description": "Track name"
          },
          "hub_url": {
              "type": "string",
              "description": "URL of track/assembly hub (optional)"
          }
      },
      "required": ["genome", "track"]

• ucsc-genome-mcp.py:211-232 (registration)

  Registration of the 'list_schema' tool in the MCP server's list_tools() function, including name, description, and input schema.

  Tool(
      name="list_schema",
      description="List the schema (field definitions) for a specified data track.",
      inputSchema={
          "type": "object",
          "properties": {
              "genome": {
                  "type": "string",
                  "description": "Genome assembly name"
              },
              "track": {
                  "type": "string",
                  "description": "Track name"
              },
              "hub_url": {
                  "type": "string",
                  "description": "URL of track/assembly hub (optional)"
              }
          },
          "required": ["genome", "track"]
      }
  ),