upload_release_asset · Mcp Github MCP: Risk & Policy

WHAT IT DOES

What upload_release_asset does on Mcp Github

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

WHY IT NEEDS A POLICY

Why upload_release_asset needs a policy

This tool creates or modifies release assets, which are reversible changes (assets can be deleted or replaced). It does not execute arbitrary code, delete data irreversibly, or move money.

From the tool's definition Tool name 'upload_release_asset' and description 'Upload an asset to a GitHub release' indicate creation/modification of release artifacts in a repository.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

upload_release_asset Rate-limited

upload_release_asset 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": {
    "upload_release_asset": {
      "limits": [
        {
          "counter": "upload_release_asset_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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 upload_release_asset

What does the upload_release_asset tool do? +

Upload an asset to a GitHub release. It is categorised as a Write tool in the Mcp 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 upload_release_asset? +

Register the Mcp Github MCP server in PolicyLayer and add a rule for upload_release_asset: 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 upload_release_asset? +

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

Can I rate-limit upload_release_asset? +

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

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

upload_release_asset 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.