Build on a runner's real training data

Let runners sign in with Endorphins and, with their consent, connect their training data to your app or AI agent. Endorphins is a standard OAuth 2.0 and OpenID Connect (OIDC) provider with a clean REST API. Get started or read the docs.

What you can build

• Log in with Endorphins — a standard OAuth 2.0 + OpenID Connect provider. Let runners sign in and, with their consent, share their training data.
• The Endorphins API — read profiles, training plans, workouts, paces, and race predictions over a clean REST API with scoped access tokens.
• Built for AI agents — connect Claude, ChatGPT, or your own agent over MCP so it can reason about a runner's real training data.
• Usage you can see — track requests over time, active connections, and whether traffic comes from an AI agent or a direct integration.

All data scopes are read-only, and every runner approves access on the Endorphins consent screen. Ready to build? Read the developer docs, then log in to register your first app.