ping_repository_webhook · Mcp Github MCP: Risk & Policy

WHAT IT DOES

What ping_repository_webhook does on Mcp Github

AI agents invoke ping_repository_webhook to trigger actions in Mcp Github. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why ping_repository_webhook needs a policy

Pinging a webhook sends a test HTTP request to an external URL, triggering external operations whose effects depend on the webhook configuration. This is an Execute action since it initiates an external network call/event. It is not purely a read operation, nor does it modify or delete data directly, but it causes an external side effect.

From the tool's definition 'Ping a repository webhook' — triggers an external HTTP request/operation to the webhook endpoint

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ping_repository_webhook Rate-limited

ping_repository_webhook stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "ping_repository_webhook": {
      "limits": [
        {
          "counter": "ping_repository_webhook_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Mcp Github, so you can run agents against it safely.

FAQ

Questions about ping_repository_webhook

What does the ping_repository_webhook tool do? +

Ping a repository webhook. It is categorised as a Execute tool in the Mcp Github MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on ping_repository_webhook? +

Register the Mcp Github MCP server in PolicyLayer and add a rule for ping_repository_webhook: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Mcp Github. Nothing to install.

What risk level is ping_repository_webhook? +

ping_repository_webhook is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit ping_repository_webhook? +

Yes. Add a rate_limit block to the ping_repository_webhook rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block ping_repository_webhook completely? +

Set action: deny in the PolicyLayer policy for ping_repository_webhook. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides ping_repository_webhook? +

ping_repository_webhook is provided by the Mcp Github MCP server (@missionsquad/mcp-github). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.