Buffer GraphQL API

GraphQL discovered

Details

Endpoint: https://api.buffer.com
Spec: introspection
Docs: https://developers.buffer.com/reference.html

Authentication

Buffer personal API key bearer discovered Get token ↗

Authorization: Bearer <credential>

Log in to your Buffer account, open Settings → API, create a new API key, and copy it. This key is account-based and acts on behalf of your own Buffer account. Store it securely; for non-interactive use Buffer recommends an environment variable such as BUFFER_API_KEY.

OAuth 2.0 oauth2 discovered

Authorization: Bearer <credential>

OAuth 2.0 — self-onboarding

Point your MCP client at the server URL and approve access in the browser. The server supports OAuth Dynamic Client Registration (RFC 7591), so the client registers itself automatically — no developer-portal app, client_id, or client_secret to create.