Layrcake

Layrcake MCP server

Layrcake is 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, behind one prepaid credit balance.

• Endpoint: https://mcp.layrcake.dev/mcp (Streamable HTTP)
• Auth: OAuth 2.1 with dynamic client registration and PKCE. Sign in when your client prompts. Free to start: 300 credits, no card.
• Docs: https://docs.layrcake.dev · Pricing: https://docs.layrcake.dev/pricing.html · Privacy: https://layrcake.dev/privacy

Tools (22)

Tool	What it does	Billing
find_leads	Search 200M+ B2B contacts by title, location, industry, company size or domain	per lead returned
find_companies	Discover companies by hiring activity, technologies in use, or lookalikes	per company
enrich	A person's verified work email and profile	on hit only
enrich_company	Company profile, technologies, funding, relationships	per dataset
verify_email	Two-stage deliverability check incl. catch-all analysis	per call
find_intent	Buying signals for company domains: hiring, funding, news, job changes, tech	per signal-bearing company
find_posts	Public social posts across LinkedIn, X, Reddit, YouTube, TikTok and more	per relevant post
check_companies	Answer a yes/no question about each company from its own website, with the quoted evidence	per company
research_company	Dated recent moves for one company, with sources, ranked for your goal	per call
prospect_picture	One picture of a person, their company, or both: role, recent activity, signals	per call
setup_sending	Provision warmed sending domains and mailboxes (quote → human approval)	credits, approved in console
create_campaign	Draft a sequence with variables and recipients; drafts never send	free
add_leads	Add recipients to a draft campaign through the suppression-safe importer	free
launch_campaign	Preview → human approval in console → real sends	free
get_replies / get_reply	Read inbound replies, classified	free
set_lead_status	Record interest; not_interested suppresses workspace-wide	free
reply_to_thread	Preview → human approval → send an in-thread reply	free
get_me / get_usage / get_operation / get_request	Identity, balance and usage, job and request status	free

Every tool returns the outcome and the credits it charged. Free reads run without prompting; tools that spend credits or change campaign data are annotated so hosts ask first; anything that sends email or buys capacity always needs a signed-in human to approve at a link the tool returns.

Connect

# Claude Code
claude mcp add --transport http layrcake https://mcp.layrcake.dev/mcp

{ "mcpServers": { "layrcake": { "type": "http", "url": "https://mcp.layrcake.dev/mcp" } } }

Also listed on the official MCP Registry as dev.layrcake/layrcake, Glama and Smithery.

This repository holds the listing manifest for directories; the server itself is hosted and closed source. Questions: [email protected]

Grok Build

Open /marketplace in Grok Build, find Layrcake, and install it. On first connection, complete the Layrcake sign-in and consent flow in your browser; new accounts are free with 300 credits and no card. The plugin contains no API key or local executable.

Network access and permissions

• https://mcp.layrcake.dev/mcp — Layrcake's hosted Streamable HTTP MCP endpoint. The same host serves OAuth discovery metadata at /.well-known/oauth-protected-resource.
• https://api.layrcake.dev — Layrcake's OAuth authorization server (dynamic client registration, token issuance, refresh), discovered from the MCP metadata.
• https://app.layrcake.dev — the browser sign-in and consent page, and the console where launches, replies and purchases are approved.

Authentication uses your Layrcake account through browser-based OAuth 2.1 with PKCE. Grok sends the resulting bearer token to the hosted server; the server scopes every tool to your workspace. Six tools are read-only (get_me, get_usage, get_operation, get_request, get_replies, get_reply). The other thirteen are annotated destructive: seven spend prepaid credits against live data providers, three change campaign data, and three (setup_sending, launch_campaign, reply_to_thread) only return a preview and an approval link — nothing is bought or sent until a signed-in human approves in the console. No token or credential is bundled with this plugin.

License

Proprietary. Use of the hosted service is governed by Layrcake's terms and privacy policy.