MCP Server Authentication

Last updated: April 28, 2026

MCP Base URL

Use the following base URL for all MCP connections:

https://mcp.gateway.attomdata.com/mcp

(If your contract includes a different environment, your onboarding email will specify it.)


Authentication

Authentication uses a Bearer token.

Required Header

Authorization: Bearer YOUR_API_KEY_HERE

Additional Headers

Content-Type: application/json


Rate Limits

Your plan includes a monthly request quota. Each MCP tool invocation counts as one request. If your monthly allotment is exceeded, the server will return:

429 Too Many Requests


Trial Access

Trial environments use the same base URL and authentication header, with a smaller quota.