Kivel

npx add-mcp 'https://kivel.io/mcp'

Email, webhooks and mock APIs for your coding agent.

Real inboxes, webhook URLs and API endpoints over one MCP connection.

Read the docs

Set up in one minute.

1. 1 Paste the prompt Into Claude Code, Cursor, Codex or any MCP client.
2. 2 Approve it Your agent asks to join your workspace. You say yes in the browser.
3. 3 Ask your agent It finds the right tool for the job by itself.

An inbox your agent can read.

Sign up to anything, wait for the email and carry on. No copying codes by hand.

Read the agent email guide

[email protected]

Your verification code

482 901

A public URL in one call.

Point Stripe, GitHub or your own app at it and let your agent wait for the next request.

• Every header and body captured
• Signatures checked for Stripe, GitHub, Shopify and Slack
• Custom responses and delays Try the webhook tester

{
  "type": "payment.succeeded",
  "amount": 2400
}

The API that isn’t built yet.

Mock REST, GraphQL and OAuth endpoints so your agent can build against them today.

• Routes, responses, delays and errors
• Stateful collections with seeded data
• Every call recorded for review Explore mock APIs

{
  "id": 42,
  "name": "Sam Rivera"
}

174 tools, one connection.

• Test payments Test units, no real money
• Monitors Uptime, SSL and cron checks
• Ask you first Risky steps wait for you
• Password vault Encrypted, with 2FA codes
• Files and memory Share and remember
• Data and utilities Fixtures, JSON, DNS

A real webhook URL, right here.

The same inbox your agent gets. Create one and send it a request.

Webhook inboxReal, not a recording

A working webhook URL, the same one an agent gets over MCP. No account needed. Works with GitHub, Shopify, Slack, Twilio, Stripe and your own apps.

Start free. Grow when you need to.

Early subscribers keep their price for as long as they stay subscribed.

Free $0

3 agents and 7 days of history. No card.

Pro · Early pricing $9 $5 /mo

25 agents, 30 days, 10 email inboxes.

Team $29 /mo

100 agents in one shared workspace, 90 days.

See every limit

Good to know.

What does my agent need to get started?

Only the MCP address. Paste the setup prompt into Claude Code, Cursor or any MCP client and the agent adds the server, asks to join your workspace and waits for you to approve it.

Can I use it in production?

Yes. Kivel runs in development, CI and production. Inboxes, webhook URLs, mocks and monitors are real, and paid plans keep data longer. Only test payments are simulated, with test units and no real money.

Can an agent sign up without me?

Yes, with a 72 hour trial key that has anonymous limits and a claim link for you. It joins your workspace, and counts against your plan, only after you approve it.

Can an agent approve its own request?

No. Questions from ask_human can only be answered by a signed in owner or admin in a browser. API keys are refused, and opening the email link does not answer anything by itself.

What happens when I reach the free limit of 3 agents?

The approval page lists your agents with when each was last active. Replace one, upgrade to Pro for 25 agents, or say no. Nothing is blocked or charged silently.

How long does data stay?

Anonymous resources last one hour. Free workspaces keep data up to 7 days, Pro 30 days and Team 90 days. Every resource can be deleted early.