Closes a pull request with an optional comment and optional branch deletion. Returns structured data with PR number, state, URL, and deleted-branch flag.
AI agents use pr-close to create or update resources in Make — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Make environment.
This tool modifies repository state by closing PRs and optionally deleting branches. These are Write operations because PR closure is reversible (PRs can be reopened) and branch deletion, while removing references, doesn't permanently destroy commit history in most git workflows. It is not Destructive because the changes can be undone.
From the tool's definition Tool description states it "Closes a pull request" and performs "optional branch deletion." Closing a PR is a reversible modification of state (the PR can be reopened), and branch deletion is reversible via git history or recovery.
Documented attack patterns abuse exactly the kind of access pr-close gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Make, and nothing reaches the server without passing your rules. This is the rule we recommend for pr-close:
{
"version": "1",
"default": "deny",
"tools": {
"pr-close": {
"limits": [
{
"counter": "pr-close_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}pr-close 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.
Free to start. No card required.
Closes a pull request with an optional comment and optional branch deletion. Returns structured data with PR number, state, URL, and deleted-branch flag. It is categorised as a Write tool in the Make MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Make MCP server in PolicyLayer and add a rule for pr-close: 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 Make. Nothing to install.
pr-close is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the pr-close 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.
Set action: deny in the PolicyLayer policy for pr-close. 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.
pr-close is provided by the Make MCP server (Dave-London/Pare). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Make, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
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