happenstance.ai
Happenstance is a people search engine for professional networks. It lets users search across their groups and connections and generate research profiles on people.
Happenstance exposes a bearer-token REST API at `https://api.happenstance.ai`, an OAuth-protected MCP server at `https://happenstance.ai/mcp`, and an `hpn` CLI that uses an API key.
- Happenstance MCP serverdetected
- Happenstance APIdiscovered
- Happenstance CLIdiscovered
Create a Happenstance account, then go to Settings → API Keys to generate your API key. The docs describe this as the key used for API and CLI access; send it as Authorization: Bearer YOUR_API_KEY, or configure the CLI with hpn config set --api-key YOUR_API_KEY.
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.
conventions · 1/8 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✓https://happenstance.ai/.well-known/oauth-protected-resource
- Agent card✗
/.well-known/agent-card.json - Agent skills✗
/.well-known/agent-skills/index.json
Publish these signals → /publishing