{
  "name": "sigcheck",
  "free": true,
  "providers": [
    "stripe",
    "github",
    "slack",
    "shopify",
    "twilio",
    "generic-sha256",
    "generic-sha1"
  ],
  "routes": {
    "POST /verify": "{provider,secret,payload,signature,timestamp?,tolerance?}",
    "POST /sign": "{provider,secret,payload,timestamp?}",
    "POST /mcp": "MCP JSON-RPC 2.0 server, tools: verify_webhook_signature, sign_webhook_payload. See /.well-known/mcp/server-card.json or /mcp/docs."
  }
}