fusionauth.io
FusionAuth is a customer identity and access management platform for authentication, authorization, and user management. It can be self-hosted or run in FusionAuth Cloud and supports standards such as OAuth 2.0 and OpenID Connect.
FusionAuth exposes a tenant-hosted REST API, a local API MCP server, a docs MCP server, and an npm-delivered CLI; documented developer auth is primarily via FusionAuth API keys.
- FusionAuth API MCP Serverdiscovered
- FusionAuth Docs MCP Serverdiscovered
- FusionAuth REST APIdiscovered
- FusionAuth CLIdiscovered
In your FusionAuth instance, create an API key following Authenticate with our APIs. Scope the key to the minimum permissions needed; the docs and MCP blog both recommend narrowly scoped keys. You use this key in the Authorization header for HTTP APIs, and tools such as the MCP server read it from API_KEY_APIKEYAUTH.
conventions · 1/7 published
- integrations.json——
- llms.txt✓https://fusionauth.io/llms.txt
- API catalog✗
/.well-known/api-catalog - OpenAPI document✗
/api/schema/, /openapi.json, /swagger.json, /api/openapi.json, or /v1/openapi.json - MCP server card✗
/.well-known/mcp/server-card.json - OAuth protected resource✗
/.well-known/oauth-protected-resource - Agent card✗
/.well-known/agent-card.json - Agent skills✗
/.well-known/agent-skills/index.json
Publish these signals → /publishing