Launchelion developer resources

What this is

Launchelion is a daily leaderboard of newly-launched AI tools: real launch dates, one-vote-per-signed-in-account-per-day community upvotes, and — when a maker connects Stripe — verified monthly revenue instead of invented traction. This page is the public API documentation for Launchelion. There is no private REST catalog. Agents query live listings through MCP and the documents listed below.

OpenAPI

The machine-readable description of HTTP surfaces that actually exist is https://launchelion.com/openapi.json. Endpoints not listed there do not exist. Paginated listings: GET /api/v1/listings.

MCP

Streamable HTTP MCP server: https://launchelion.com/api/mcp/mcp. Tools: search_tools, get_tool, list_alternatives, submit_tool, list_offers, create_checkout. Read tools need no authentication.

Authentication

Public catalog and MCP reads need no token. Maker login is a human browser flow. Full agent instructions: https://launchelion.com/auth.md. RFC 9728 metadata: https://launchelion.com/.well-known/oauth-protected-resource.

Discovery files

Agent discovery: https://launchelion.com/.well-known/agent-discovery.json. Also https://launchelion.com/.well-known/agents.json, https://launchelion.com/llms.txt, https://launchelion.com/AGENTS.md, and https://launchelion.com/.well-known/api-catalog.