Go-to-market infrastructure for AI agents: one MCP server and API that lets Claude, ChatGPT, Cursor and Codex find leads, verify emails, read buying signals and run approved campaigns.
AI agents can write a great sales email, but they can't look up who works where today, check whether an address will bounce, or send safely on their own. Layrcake is the layer underneath: one MCP server and API, one prepaid credit balance, and every tool an agent needs to prospect and run outbound. Lookups that find nothing are free, every call reports its cost, and anything that sends email or spends money waits for a person to approve it. We publish tested guides here, with the exact prompts, tool calls and costs from real runs.
Our stack
Hosted MCP server (Streamable HTTP, OAuth 2.1) and a REST API with an OpenAPI spec, built in TypeScript. Works with Claude, Claude Code, ChatGPT, Cursor and Codex. Docs: https://docs.layrcake.dev · For agents: https://layrcake.dev/agents.md
