pr-create

Creates a new pull request. Returns structured data with PR number and URL.

SERVERCargo SOURCEDave-London/Pare

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-dave-london-cargo/pr-create.md

WHAT IT DOES

What pr-create does on Cargo

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

RISK

Why pr-create is rated Medium

This tool creates a new pull request, which is a reversible write operation on a repository's version control system. While it modifies state, PRs can be closed/deleted, making it Write rather than Destructive. Medium severity reflects that an agent could spam PRs or create malicious PRs, but the impact is limited to the repository and can be remediated by deletion or forced closure.

From the tool's definition Tool name 'pr-create' and description 'Creates a new pull request' indicate a write operation that modifies repository state by creating a new PR object.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pr-create safely

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

pr-create Rate-limited

pr-create 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": {
    "pr-create": {
      "limits": [
        {
          "counter": "pr-create_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 Cargo, apply this rule, and every pr-create call is checked against it from then on.

FAQ

Questions about pr-create

What does the pr-create tool do? +

Creates a new pull request. Returns structured data with PR number and URL. It is categorised as a Write tool in the Cargo MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on pr-create? +

Register the Cargo MCP server in PolicyLayer and add a rule for pr-create: 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 Cargo. Nothing to install.

What risk level is pr-create? +

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

Can I rate-limit pr-create? +

Yes. Add a rate_limit block to the pr-create 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 pr-create completely? +

Set action: deny in the PolicyLayer policy for pr-create. 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 pr-create? +

pr-create is provided by the Cargo MCP server (Dave-London/Pare). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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