@signalstack/mcp-server

MCP server for SignalStack — verify businesses, documents, media, and claims from any MCP-compatible AI agent (Claude, ChatGPT, Cursor, Copilot, etc.).

Installation

npm install -g @signalstack/mcp-server

Usage

Set your SignalStack API key and run:

export SIGNALSTACK_API_KEY=sk_live_xxxxx
signalstack-mcp

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "signalstack": {
      "command": "npx",
      "args": ["-y", "@signalstack/mcp-server"],
      "env": {
        "SIGNALSTACK_API_KEY": "sk_live_xxxxx"
      }
    }
  }
}

Custom Base URL (self-hosted)

export SIGNALSTACK_BASE_URL=https://your-instance.com/api/v1

Tools

| Tool | Description | Required params | |------|-------------|----------------| | verify_business | Verify a business entity across 14+ data sources | name | | verify_document | Analyze document authenticity and tampering | url | | verify_media | Analyze media provenance and synthetic score | url | | verify_claim | Fact-check a claim against knowledge sources | claim |

Environment Variables

| Variable | Required | Default | Description | |----------|----------|---------|-------------| | SIGNALSTACK_API_KEY | Yes | — | Your SignalStack API key | | SIGNALSTACK_BASE_URL | No | https://signalstack.ai/api/v1 | API base URL |