io.github.cyanheads/mailchimp-mcp-server✓

The full server descriptor as registered with IndusMCP.

{
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "name": "io.github.cyanheads/mailchimp-mcp-server",
  "description": "Mailchimp via MCP: draft, test, and send campaigns; manage audiences and subscribers; pull reports.",
  "repository": {
    "url": "https://github.com/cyanheads/mailchimp-mcp-server",
    "source": "github"
  },
  "version": "0.3.4",
  "packages": [
    {
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "identifier": "@cyanheads/mailchimp-mcp-server",
      "version": "0.3.4",
      "runtimeHint": "bun",
      "transport": {
        "type": "stdio"
      },
      "packageArguments": [
        {
          "value": "run",
          "type": "positional"
        },
        {
          "value": "start:stdio",
          "type": "positional"
        }
      ],
      "environmentVariables": [
        {
          "description": "Mailchimp Marketing API key, including the '-dc' data-center suffix (e.g. 'abc...-us22'). Generate at Mailchimp → Account → Extras → API keys.",
          "isRequired": true,
          "format": "string",
          "name": "MAILCHIMP_API_KEY"
        },
        {
          "description": "Override the API base URL (for mock servers or testing). Defaults to 'https://{dc}.api.mailchimp.com/3.0' derived from the API key suffix.",
          "format": "string",
          "name": "MAILCHIMP_BASE_URL"
        },
        {
          "description": "Per-request timeout in milliseconds.",
          "format": "string",
          "default": "60000",
          "name": "MAILCHIMP_TIMEOUT_MS"
        },
        {
          "description": "Max retry attempts for transient upstream failures (0-10).",
          "format": "string",
          "default": "3",
          "name": "MAILCHIMP_MAX_RETRIES"
        },
        {
          "description": "Max in-flight upstream requests per workflow tool (1-10).",
          "format": "string",
          "default": "4",
          "name": "MAILCHIMP_CONCURRENCY_LIMIT"
        },
        {
          "description": "Absolute path to a local assets directory. When set (Node-only — Workers ignored), enables the `mailchimp_assets` tool and auto-uploads `@assets/<path>` references in campaign HTML to Mailchimp File Manager at send time. Cache at <dir>/.mailchimp-cache.json.",
          "format": "string",
          "name": "MAILCHIMP_ASSETS_DIR"
        },
        {
          "description": "Absolute path to a local templates directory. When set (Node-only), enables the `mailchimp_local_templates` tool and support for `content.localTemplate` on campaign tools. Templates are `.eta` files with optional `<name>.meta.yaml` sidecars. Canonical write path on free-tier Mailchimp.",
          "format": "string",
          "name": "MAILCHIMP_TEMPLATES_DIR"
        },
        {
          "description": "Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').",
          "format": "string",
          "default": "info",
          "name": "MCP_LOG_LEVEL"
        }
      ]
    },
    {
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "identifier": "@cyanheads/mailchimp-mcp-server",
      "version": "0.3.4",
      "runtimeHint": "bun",
      "transport": {
        "type": "streamable-http",
        "url": "http://localhost:3010/mcp"
      },
      "packageArguments": [
        {
          "value": "run",
          "type": "positional"
        },
        {
          "value": "start:http",
          "type": "positional"
        }
      ],
      "environmentVariables": [
        {
          "description": "Mailchimp Marketing API key, including the '-dc' data-center suffix (e.g. 'abc...-us22'). Generate at Mailchimp → Account → Extras → API keys.",
          "isRequired": true,
          "format": "string",
          "name": "MAILCHIMP_API_KEY"
        },
        {
          "description": "Override the API base URL (for mock servers or testing). Defaults to 'https://{dc}.api.mailchimp.com/3.0' derived from the API key suffix.",
          "format": "string",
          "name": "MAILCHIMP_BASE_URL"
        },
        {
          "description": "Per-request timeout in milliseconds.",
          "format": "string",
          "default": "60000",
          "name": "MAILCHIMP_TIMEOUT_MS"
        },
        {
          "description": "Max retry attempts for transient upstream failures (0-10).",
          "format": "string",
          "default": "3",
          "name": "MAILCHIMP_MAX_RETRIES"
        },
        {
          "description": "Max in-flight upstream requests per workflow tool (1-10).",
          "format": "string",
          "default": "4",
          "name": "MAILCHIMP_CONCURRENCY_LIMIT"
        },
        {
          "description": "The hostname for the HTTP server.",
          "format": "string",
          "default": "127.0.0.1",
          "name": "MCP_HTTP_HOST"
        },
        {
          "description": "The port to run the HTTP server on.",
          "format": "string",
          "default": "3010",
          "name": "MCP_HTTP_PORT"
        },
        {
          "description": "The endpoint path for the MCP server.",
          "format": "string",
          "default": "/mcp",
          "name": "MCP_HTTP_ENDPOINT_PATH"
        },
        {
          "description": "Authentication mode to use: 'none', 'jwt', or 'oauth'.",
          "format": "string",
          "default": "none",
          "name": "MCP_AUTH_MODE"
        },
        {
          "description": "Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').",
          "format": "string",
          "default": "info",
          "name": "MCP_LOG_LEVEL"
        }
      ]
    }
  ],
  "_meta": {
    "dev.indusmcp/source": "official-registry-mirror",
    "dev.indusmcp/synced": "2026-05-12"
  }
}