Adds multiple comments to specific lines in a GitHub PR. Supports commenting on specific changed lines in the PR diff.
Part of the Code Review server.
Free to start. No card required.
AI agents use AddPRLineComment to create or modify resources in Code Review. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call AddPRLineComment repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Code Review.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"AddPRLineComment": {
"limits": [
{
"counter": "addprlinecomment_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Code Review policy for all 7 tools.
These attack patterns abuse exactly the kind of access AddPRLineComment gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Adds multiple comments to specific lines in a GitHub PR. Supports commenting on specific changed lines in the PR diff.. It is categorised as a Write tool in the Code Review MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Code Review MCP server in PolicyLayer and add a rule for AddPRLineComment: 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 Code Review. Nothing to install.
AddPRLineComment 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 AddPRLineComment 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 AddPRLineComment. 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.
AddPRLineComment is provided by the Code Review MCP server (code-review-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 Code Review tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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