update_gist

A write tool on the GitHub MCP server.

SERVERGitHub SOURCEoci:ghcr.io/aifity/omnigit-mcp:0.5.0

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/io-github-aifity-omnigit-mcp/update-gist.md

WHAT IT DOES

What update_gist does on GitHub

AI agents use update_gist 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 update_gist is rated Medium

The tool modifies data reversibly—updating a Gist changes its content but the action can be undone (reverted, edited again, or deleted). This is a Write operation, not Destructive, because updates are reversible.

From the tool's definition Tool name 'update_gist' and description 'Update Gist' indicate modification of an existing GitHub Gist (user-created code snippet/document).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_gist 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 update_gist, this is the rule to start with:

update_gist Rate-limited

update_gist 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": {
    "update_gist": {
      "limits": [
        {
          "counter": "update_gist_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 update_gist call is checked against it from then on.

FAQ

Questions about update_gist

What does the update_gist tool do? +

update_gist is a write tool on the GitHub MCP server. 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 update_gist? +

Register the GitHub MCP server in PolicyLayer and add a rule for update_gist: 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 update_gist? +

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

Can I rate-limit update_gist? +

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

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

update_gist is provided by the GitHub MCP server (oci:ghcr.io/aifity/omnigit-mcp:0.5.0). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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