Touchstone

cv.touchstone/touchstone

Bitcoin-anchored, tamper-evident audit log for AI agents — record, disclose and verify actions.

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Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "touchstone": {
      "command": "npx",
      "args": [
        "-y",
        "@touchstone-cv/mcp@0.3.1"
      ],
      "env": {
        "TOUCHSTONE_RECORDER": "<your TOUCHSTONE_RECORDER>",
        "TOUCHSTONE_SUBJECT": "<your TOUCHSTONE_SUBJECT>",
        "TOUCHSTONE_API_KEY": "<your TOUCHSTONE_API_KEY>",
        "TOUCHSTONE_SIGNING_KEY": "<your TOUCHSTONE_SIGNING_KEY>"
      }
    }
  }
}
Environment variables
  • TOUCHSTONE_RECORDERrequiredRecorder public id (rec_...) to append to.
  • TOUCHSTONE_SUBJECTrequiredThe subject Colony sub whose key signs entries.
  • TOUCHSTONE_API_KEYrequiredsecretTouchstone API key (tsk_...) for the append/disclose REST calls.
  • TOUCHSTONE_SIGNING_KEYsecretBase64 Ed25519 seed. Signs locally — the key never leaves your machine. Use this or TOUCHSTONE_KEY_FILE.

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
AI & ML
Version
1.1.0
Registry
active
Published
7/10/2026

Remotes

  • streamable-httphttps://touchstone.cv/mcp

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Touchstone — listed on Serverdex

HTML — for your website

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Recommended. A dofollow link from your own domain is the one that counts for search engines, and it's the link we check for a free listing.

Markdown — for your README

[![Touchstone — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/cv-touchstone-touchstone?utm_source=badge)

Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.