37signals.com
37signals is the software company behind products including Basecamp, HEY, and Fizzy. On its public developer-facing surface for this domain, it directs developers to Basecamp APIs, SDKs, and an official CLI for working with Basecamp and AI agents.
37signals publicly exposes Basecamp developer surfaces: a tenant-scoped HTTP API authenticated with Basecamp OAuth 2 bearer tokens, plus an official `basecamp` CLI that authenticates via `basecamp auth login`.
- Basecamp APIdiscovered
- Basecamp CLIdiscovered
Sign in to Basecamp Launchpad Integrations, create a new integration/application, and copy the issued client_id and client_secret. Use that app to run the standard Basecamp OAuth flow and obtain user access tokens for the API.
$ basecamp auth loginAcquired by the CLI — running basecamp auth login opens the auth flow and stores the credential.
conventions · 0/8 published
- integrations.json✗
/.well-known/integrations.json - llms.txt✗
/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