webhook_listen_start

Start a loopback HTTP listener that turns each verified POST into a

SERVERIconnect SOURCEiconnect-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-heznpc-iconnect/webhook-listen-start.md

WHAT IT DOES

What webhook_listen_start does on Iconnect

AI agents invoke webhook_listen_start to trigger actions in Iconnect. 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.

RISK

Why webhook_listen_start is rated High

This tool executes an HTTP listener and processes incoming webhook data, making it an Execute category tool. It has high severity because a misconfigured webhook listener could be abused to trigger unintended actions on the system via malicious POST requests, or an AI agent could inadvertently create listeners that interfere with system operations.

From the tool's definition webhook_listen_start starts a loopback HTTP listener that processes POST requests. This triggers external operations whose effects depend on the content and source of incoming requests.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs webhook_listen_start safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Iconnect, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For webhook_listen_start, this is the rule to start with:

webhook_listen_start Rate-limited

webhook_listen_start 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": {
    "webhook_listen_start": {
      "limits": [
        {
          "counter": "webhook_listen_start_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Iconnect, apply this rule, and every webhook_listen_start call is checked against it from then on.

FAQ

Questions about webhook_listen_start

What does the webhook_listen_start tool do? +

Start a loopback HTTP listener that turns each verified POST into a. It is categorised as a Execute tool in the Iconnect MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on webhook_listen_start? +

Register the Iconnect MCP server in PolicyLayer and add a rule for webhook_listen_start: 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 Iconnect. Nothing to install.

What risk level is webhook_listen_start? +

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

Can I rate-limit webhook_listen_start? +

Yes. Add a rate_limit block to the webhook_listen_start 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 webhook_listen_start completely? +

Set action: deny in the PolicyLayer policy for webhook_listen_start. 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 webhook_listen_start? +

webhook_listen_start is provided by the Iconnect MCP server (iconnect-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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