Touchstone MCP Server

by touchstone-cvcv.touchstone/touchstonev1.1.0

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Maintained37d ago

Install Touchstone MCP server

claude mcp add touchstone-cv -e TOUCHSTONE_RECORDER='<touchstone-recorder>' -e TOUCHSTONE_SUBJECT='<touchstone-subject>' -e TOUCHSTONE_API_KEY='<touchstone-api-key>' -e TOUCHSTONE_SIGNING_KEY='<touchstone-signing-key>' -- npx -y @touchstone-cv/mcp

{
  "mcpServers": {
    "touchstone-cv": {
      "command": "npx",
      "args": [
        "-y",
        "@touchstone-cv/mcp"
      ],
      "env": {
        "TOUCHSTONE_RECORDER": "<touchstone-recorder>",
        "TOUCHSTONE_SUBJECT": "<touchstone-subject>",
        "TOUCHSTONE_API_KEY": "<touchstone-api-key>",
        "TOUCHSTONE_SIGNING_KEY": "<touchstone-signing-key>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "touchstone-cv": {
      "command": "npx",
      "args": [
        "-y",
        "@touchstone-cv/mcp"
      ],
      "env": {
        "TOUCHSTONE_RECORDER": "<touchstone-recorder>",
        "TOUCHSTONE_SUBJECT": "<touchstone-subject>",
        "TOUCHSTONE_API_KEY": "<touchstone-api-key>",
        "TOUCHSTONE_SIGNING_KEY": "<touchstone-signing-key>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "touchstone-cv": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@touchstone-cv/mcp"
      ],
      "env": {
        "TOUCHSTONE_RECORDER": "<touchstone-recorder>",
        "TOUCHSTONE_SUBJECT": "<touchstone-subject>",
        "TOUCHSTONE_API_KEY": "<touchstone-api-key>",
        "TOUCHSTONE_SIGNING_KEY": "<touchstone-signing-key>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "touchstone-cv": {
      "command": "npx",
      "args": [
        "-y",
        "@touchstone-cv/mcp"
      ],
      "env": {
        "TOUCHSTONE_RECORDER": "<touchstone-recorder>",
        "TOUCHSTONE_SUBJECT": "<touchstone-subject>",
        "TOUCHSTONE_API_KEY": "<touchstone-api-key>",
        "TOUCHSTONE_SIGNING_KEY": "<touchstone-signing-key>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
TOUCHSTONE_RECORDER	yes	—	Recorder public id (rec_...) to append to.
TOUCHSTONE_SUBJECT	yes	—	The subject Colony sub whose key signs entries.
TOUCHSTONE_API_KEY	yes	yes	Touchstone API key (tsk_...) for the append/disclose REST calls.
TOUCHSTONE_SIGNING_KEY	—	yes	Base64 Ed25519 seed. Signs locally — the key never leaves your machine. Use this or TOUCHSTONE_KEY_FILE.
TOUCHSTONE_KEY_FILE	—	—	Path to a file holding the base64 Ed25519 seed (alternative to TOUCHSTONE_SIGNING_KEY).
TOUCHSTONE_BASE_URL	—	—	Override the Touchstone API base URL (defaults to https://touchstone.cv).

Remote endpoints

streamable-httphttps://touchstone.cv/mcp

Freshness

Maintained — last maintenance signal 37d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-09-03 · 37d ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-07-10 · 3mo ago · official registry · v1.1.0

FAQ

›How do I install the Touchstone MCP server in Claude Code?

Run: claude mcp add touchstone-cv -e TOUCHSTONE_RECORDER='<touchstone-recorder>' -e TOUCHSTONE_SUBJECT='<touchstone-subject>' -e TOUCHSTONE_API_KEY='<touchstone-api-key>' -e TOUCHSTONE_SIGNING_KEY='<touchstone-signing-key>' -- npx -y @touchstone-cv/mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Touchstone require an API key?

Yes. It expects TOUCHSTONE_RECORDER, TOUCHSTONE_SUBJECT, TOUCHSTONE_API_KEY, TOUCHSTONE_SIGNING_KEY, of which 2 are secrets.

›Can I use Touchstone as a remote (hosted) MCP server?

Yes — it offers both a hosted endpoint and a local stdio package.

›Is Touchstone in the official MCP registry?

Yes, as cv.touchstone/touchstone.