Hotato MCP Server

Find what broke in your agent calls. Pin it and CI stays red until you fix it. It runs locally over stdio via the published package.

People who work with voice agents, regression testing and retell and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-08-28 · ★ 2 · #534 OF 998 MAINTAINED OTHER · VERIFIED 2026-09-30

MIT · Python servers · how we verify → /methodology

01 · Install Hotato

before you install - you'll need

Set VAPI_API_KEY, RETELL_API_KEY before connecting.

Claude Code

claude mcp add attenlabs-hotato -- uvx hotato

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "attenlabs-hotato": {
      "command": "uvx",
      "args": [
        "hotato"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

pypi package hotato - check the name against the project README before installing (PyPI has no namespace ownership)

registry namespace io.github.attenlabs is GitHub-verified and matches the repo owner

03 · What Hotato can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v1.18.1 · 2026-07-30

[1.18.1] - 2026-07-29 · Fixed · A slow-starting event loop no longer refuses the LiveKit connect. The RTC · driver started its loop thread and set the ready flag from the thread body, · before run_forever(). A thread…

v1.18.0 · 2026-07-29

[1.18.0] - 2026-07-29 · Changed · Every artifact hotato writes now uses one palette. The report, the · shareable card, the failure record, the counterexample card, the gauntlet · badge, the load-test page, the suite…

v1.17.1 · 2026-07-28

[1.17.1] - 2026-07-28 · Fixed · Twilio setup no longer points at a verb that cannot do it. The · dual-channel instructions listed <Record recordingChannels="dual"> · alongside the two paths that work. Twilio's <Record>…

04 · Who maintains Hotato

hotato is maintained by attenlabs. It's the only MCP server we track from this author; the repo dates to Jul 2026.

05 · Facts

repository: github.com/attenlabs/hotato
website: https://hotato.dev/
category: other - ranked #534 of 998 actively-maintained other servers as of 2026-09-30.
release cadence: 10+ releases in the last 90 days (latest 2026-07-30)
registry: io.github.attenlabs/hotato (active, first published 2026-07-09 · 3 versions)
packages: pypi:hotato

06 · Hotato FAQ

What is Hotato?

Find what broke in your agent calls. Pin it and CI stays red until you fix it. It runs locally over stdio via the published package.

Is Hotato still maintained?

Yes - as of 2026-09-30, its last commit was 2026-08-28 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install Hotato?

Run `uvx hotato`. The README documents 2 environment variables (VAPI_API_KEY, RETELL_API_KEY) to set first. Set VAPI_API_KEY, RETELL_API_KEY before connecting. You can also paste the ready-made client config above.

Does Hotato run locally?

Yes - it's a stdio server: it runs on your machine (via uvx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Hotato

Alternatives to Hotato

Maintained other servers if Hotato isn't the fit.

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