AI agents call pr_list to retrieve information from Pr Review without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays pull request review comments with optional filters. It performs no modifications, deletions, or external operations—it is a pure data query operation with no side effects. Severity is low as it merely surfaces information already accessible through normal PR review workflows.
From the tool's definition Tool name 'pr_list' and description 'List PR review comments with optional filtering' indicate data retrieval operation. The verbs 'list' and 'filtering' are characteristic of Read operations that query existing data without modification.
Attacks that exploit this kind of access
List PR review comments with optional filtering by resolved/file/severity. It is categorised as a Read tool in the Pr Review MCP Server, which means it retrieves data without modifying state.
Register the Pr Review MCP server in PolicyLayer and add a rule for pr_list: 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 Pr Review. Nothing to install.
pr_list is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the pr_list 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_list. 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_list is provided by the Pr Review MCP server (thebtf/pr-review-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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