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Claude.ai Hermoso render_ad

How to: Claude.ai Hermoso render_ad

client:Claude.ai transport:streamable-http tool:render_ad

Add Hermoso to Claude.ai

  1. 01

    Open Settings → Connectors → Add custom connector and merge this in. Keep any servers already there.

https://app.hermoso.ai/mcp?src=registry
  1. 02

    Save the file and restart Claude.ai.

  2. 03

    Ask for something render_ad does. Claude.ai lists the server's tools on connect and calls render_ad itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that Hermoso's identifier in your config matches the one above exactly.

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

Set these first

Hermoso will not start until these are set, so render_ad never becomes available.

  • HERMOSO_TOKEN
  • HERMOSO_API_BASE

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.