Countersign MCP Server

by countersign-networkio.github.countersign-network/countersignv0.2.2

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Active22d ago

Install Countersign MCP server

claude mcp add countersign-network -e COUNTERSIGN_URL=https://app.countersign.network -e COUNTERSIGN_API_KEY='<countersign-api-key>' -- npx -y @countersign/mcp

{
  "mcpServers": {
    "countersign-network": {
      "command": "npx",
      "args": [
        "-y",
        "@countersign/mcp"
      ],
      "env": {
        "COUNTERSIGN_URL": "https://app.countersign.network",
        "COUNTERSIGN_API_KEY": "<countersign-api-key>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "countersign-network": {
      "command": "npx",
      "args": [
        "-y",
        "@countersign/mcp"
      ],
      "env": {
        "COUNTERSIGN_URL": "https://app.countersign.network",
        "COUNTERSIGN_API_KEY": "<countersign-api-key>"
      }
    }
  }
}

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

{
  "servers": {
    "countersign-network": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@countersign/mcp"
      ],
      "env": {
        "COUNTERSIGN_URL": "https://app.countersign.network",
        "COUNTERSIGN_API_KEY": "<countersign-api-key>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "countersign-network": {
      "command": "npx",
      "args": [
        "-y",
        "@countersign/mcp"
      ],
      "env": {
        "COUNTERSIGN_URL": "https://app.countersign.network",
        "COUNTERSIGN_API_KEY": "<countersign-api-key>"
      }
    }
  }
}

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

Configuration

Variable	Required	Secret	Description
COUNTERSIGN_URL	yes	—	Base URL of the Countersign Core to govern (hosted or self-hosted).
COUNTERSIGN_API_KEY	yes	yes	API key for the Core (self-serve one at https://app.countersign.network/start or POST /signup).

Freshness

Active — last maintenance signal 22d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-09-18 · 22d ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-08-23 · 48d ago · official registry · v0.2.2

FAQ

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

Run: claude mcp add countersign-network -e COUNTERSIGN_URL=https://app.countersign.network -e COUNTERSIGN_API_KEY='<countersign-api-key>' -- npx -y @countersign/mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Countersign require an API key?

Yes. It expects COUNTERSIGN_URL, COUNTERSIGN_API_KEY, of which 1 is a secret.

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

No hosted endpoint is published; it runs locally over stdio.

›Is Countersign in the official MCP registry?

Yes, as io.github.countersign-network/countersign.