io.github.cyanheads/clinicaltrialsgov-mcp-server

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-11-13T15:09:22.897017Z",
      "publishedAt": "2026-11-13T15:09:22.897017Z",
      "statusChangedAt": "2026-11-13T15:09:22.897017Z"
    }
  },
  "server": {
    "name": "io.github.cyanheads/clinicaltrialsgov-mcp-server",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
    "remotes": [
      {
        "url": "https://clinicaltrials.caseyjhand.com/mcp",
        "type": "streamable-http"
      }
    ],
    "version": "2.11.3",
    "packages": [
      {
        "version": "2.11.3",
        "transport": {
          "type": "stdio"
        },
        "identifier": "clinicaltrialsgov-mcp-server",
        "runtimeHint": "npx",
        "registryType": "npm",
        "registryBaseUrl": "https://registry.npmjs.org",
        "environmentVariables": [
          {
            "name": "CT_API_BASE_URL",
            "format": "string",
            "default": "https://clinicaltrials.gov/api/v2",
            "description": "ClinicalTrials.gov API base URL."
          },
          {
            "name": "CT_REQUEST_TIMEOUT_MS",
            "format": "string",
            "default": "30000",
            "description": "Timeout in milliseconds for each attempt at a ClinicalTrials.gov request; a positive integer. An attempt ends sooner when its tool call or resource read runs out of its 50-second budget, which covers every request, retry, and wait the call makes."
          },
          {
            "name": "CT_MAX_PAGE_SIZE",
            "format": "string",
            "default": "200",
            "description": "Most studies one clinicaltrials_search_studies page returns; an integer of at least 1, values above 1000 clamp to 1000."
          },
          {
            "name": "MCP_LOG_LEVEL",
            "format": "string",
            "default": "info",
            "description": "Sets the minimum log level for output (e.g., 'debug', 'info', 'warn')."
          }
        ]
      },
      {
        "version": "2.11.3",
        "transport": {
          "url": "http://localhost:3010/mcp",
          "type": "streamable-http"
        },
        "identifier": "clinicaltrialsgov-mcp-server",
        "runtimeHint": "npx",
        "registryType": "npm",
        "registryBaseUrl": "https://registry.npmjs.org",
        "environmentVariables": [
          {
            "name": "MCP_TRANSPORT_TYPE",
            "value": "http",
            "format": "string",
            "description": "Selects the HTTP transport."
          },
          {
            "name": "CT_API_BASE_URL",
            "format": "string",
            "default": "https://clinicaltrials.gov/api/v2",
            "description": "ClinicalTrials.gov API base URL."
          },
          {
            "name": "CT_REQUEST_TIMEOUT_MS",
            "format": "string",
            "default": "30000",
            "description": "Timeout in milliseconds for each attempt at a ClinicalTrials.gov request; a positive integer. An attempt ends sooner when its tool call or resource read runs out of its 50-second budget, which covers every request, retry, and wait the call makes."
          },
          {
            "name": "CT_MAX_PAGE_SIZE",
            "format": "string",
            "default": "200",
            "description": "Most studies one clinicaltrials_search_studies page returns; an integer of at least 1, values above 1000 clamp to 1000."
          },
          {
            "name": "MCP_HTTP_HOST",
            "format": "string",
            "default": "127.0.0.1",
            "description": "The hostname for the HTTP server."
          },
          {
            "name": "MCP_HTTP_PORT",
            "format": "string",
            "default": "3010",
            "description": "The port to run the HTTP server on."
          },
          {
            "name": "MCP_HTTP_ENDPOINT_PATH",
            "format": "string",
            "default": "/mcp",
            "description": "The endpoint path for the MCP server."
          },
          {
            "name": "MCP_AUTH_MODE",
            "format": "string",
            "default": "none",
            "description": "Authentication mode to use: 'none', 'jwt', or 'oauth'."
          },
          {
            "name": "MCP_LOG_LEVEL",
            "format": "string",
            "default": "info",
            "description": "Sets the minimum log level for output (e.g., 'debug', 'info', 'warn')."
          }
        ]
      }
    ],
    "repository": {
      "url": "https://github.com/cyanheads/clinicaltrialsgov-mcp-server",
      "source": "github"
    },
    "description": "Search ClinicalTrials.gov: find studies, retrieve results, match patients to candidate trials."
  }
}