API & MCP Portal — Get Your Free API Key

One free key unlocks the MCP server for AI agents and the REST API. Sign in with Google and you are ready in under a minute.

Free forever 100 emails / day MCP + REST API No credit card

Loading sign-in…

Start in 60 seconds

MCP server (for AI agents)

claude mcp add --transport http temp-mail https://temp-mail.agency/mcp --header "Authorization: Bearer YOUR_API_KEY"

Claude Desktop, Cursor and other clients, plus the full tool reference: MCP server documentation. After you sign in, this page fills your real key into the examples.

REST API

curl https://temp-mail.agency/api/v1/domains -H "Authorization: Bearer YOUR_API_KEY"

All endpoints: API documentation.

How the free limit works

Every key includes 100 emails per day, counted across the MCP server and the REST API together and reset at midnight UTC. One email = one inbox created, one message read, or one verification-code fetch. Listing domains and deleting inboxes are free. There are no paid tiers — the limit simply keeps the free service fast and abuse-free.

FAQ

Does the website inbox now need sign-in too?

No. The temp mail generator on the homepage stays free with no registration, exactly as before. The key is only for the developer API and the MCP server.

I lost my key. What do I do?

Sign in here with the same Google account — your key is tied to the account, so this page always shows it. If it leaked, regenerate it above; the old one stops working instantly.

Do you store my Google password?

Never. Sign-in happens on Google's own popup via Firebase Auth. Our server only receives a signed token proving who you are, plus your email address.

Can I get more than 100 emails/day?

Not right now — 100/day is the free plan, and there is no paid tier. It covers the large majority of sign-up, testing and agent verification flows.