buildwithfern.com

Fern is a platform for generating API documentation, SDKs, and CLIs from API definitions such as OpenAPI and GraphQL. It also provides AI-oriented documentation features like llms.txt and MCP-backed docs access.

4 integrations · MCP · REST · CLI

buildwithfern.com exposes a public docs MCP endpoint and public docs-question HTTP endpoint under /learn, plus the Fern CLI and a documented Fern docs helper HTTP API that use Fern API keys.

discovered 2mo ago

MCP servers1

Fern Docs MCP serverdiscoveredstreamable-http

REST · OpenAPI2

Fern docs ask endpointdiscoveredrest
Fern docs helper APIdiscoveredrest

CLI1

Fern CLIdiscoveredfern

Credentials

Fern API keyapi_keyGet key ↗

In the Fern Dashboard, go to API Keys, choose Create key, enter a name, and click Generate. Copy the key immediately; it is shown only once. For CI/CD, store it as FERN_TOKEN as described in the API keys docs.

conventions · 1/7 published

integrations.json——
llms.txt✓https://buildwithfern.com/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