github_comment_on_issue

Add a comment to an issue (or PR).

SERVERGithub SOURCEdkeeno/github-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dkeeno-github-mcp-server/github-comment-on-issue.md

WHAT IT DOES

What github_comment_on_issue does on Github

AI agents use github_comment_on_issue to create or update resources in Github, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Github environment.

RISK

Why github_comment_on_issue is rated Medium

This tool creates new content (a comment) on an existing GitHub issue or pull request. This is a reversible write operation—comments can be edited or deleted afterward. It does not execute code, delete data irreversibly, or move money.

From the tool's definition Tool name 'github_comment_on_issue' and description 'Add a comment to an issue (or PR)' indicate creation of new comment data on GitHub.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs github_comment_on_issue safely

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

github_comment_on_issue Rate-limited

github_comment_on_issue stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "github_comment_on_issue": {
      "limits": [
        {
          "counter": "github_comment_on_issue_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about github_comment_on_issue

What does the github_comment_on_issue tool do? +

Add a comment to an issue (or PR). It is categorised as a Write tool in the Github MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on github_comment_on_issue? +

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

What risk level is github_comment_on_issue? +

github_comment_on_issue is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit github_comment_on_issue? +

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

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

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

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