pr-reopen
Reopens a previously closed pull request, optionally with a comment. Returns structured data with PR number, state, and URL.
This record as markdown: /tools/io-github-dave-london-http/pr-reopen.md
What pr-reopen does on Http
AI agents use pr-reopen to create or update resources in Http, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Http environment.
Why pr-reopen is rated Medium
Reopening a pull request modifies its state from closed to open, which is a reversible write operation. It does not delete data, execute code, or involve financial transactions. The action can be undone by closing the PR again, placing it firmly in the Write category.
From the tool's definition Reopens a previously closed pull request, optionally with a comment. Returns structured data with PR number, state, and URL.
Attacks that exploit this kind of access
The rule that runs pr-reopen safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Http, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For pr-reopen, this is the rule to start with:
pr-reopen 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Http, apply this rule, and every pr-reopen call is checked against it from then on.
Questions about pr-reopen
Reopens a previously closed pull request, optionally with a comment. Returns structured data with PR number, state, and URL. It is categorised as a Write tool in the Http MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Http MCP server in PolicyLayer and add a rule for pr-reopen: 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 Http. Nothing to install.
pr-reopen 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-reopen 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-reopen. 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-reopen is provided by the Http MCP server (@paretools/http). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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