Transports

The MCP server is available over HTTP.

HTTP

Streamable HTTP transport.

• URL: https://mcp.campaignstack.io/mcp
• Auth: Required — Authorization: Bearer csu_... (user key) or cs_... (workspace key)
• Protocol: JSON-RPC 2.0 over HTTP, with SSE for streaming

Session lifecycle

1. Initialize — POST /mcp with initialize method. Server returns a session ID in the mcp-session-id header.
2. Tool calls — POST /mcp with tools/call method, include session ID header.
3. Streaming — GET /mcp with session ID for SSE event stream.
4. Close — DELETE /mcp with session ID.

Health check

curl https://mcp.campaignstack.io/health

Returns server version, status, and the complete list of available tools (no authentication required).

stdio

Not available. The MCP server is hosted — connect via the HTTP transport above.