Reply to a comment on a pull request
AI agents use create_pull_request_reply to create or update resources in AtomGit MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your AtomGit MCP Server environment.
The tool creates new data (a comment reply) without deleting or overwriting existing data, and without executing arbitrary code or moving financial resources. While comments can influence project decisions, the action itself is reversible (comments can be deleted). This qualifies as Write rather than Execute, as it doesn't run code or trigger external operations dependent on comment content.
From the tool's definition Tool description states 'Reply to a comment on a pull request' — this creates a new comment/reply, which is a reversible write operation that modifies the pull request discussion thread.
Documented attack patterns abuse exactly the kind of access create_pull_request_reply gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and AtomGit MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for create_pull_request_reply:
{
"version": "1",
"default": "deny",
"tools": {
"create_pull_request_reply": {
"limits": [
{
"counter": "create_pull_request_reply_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
} create_pull_request_reply 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.
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Reply to a comment on a pull request. It is categorised as a Write tool in the AtomGit MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the AtomGit MCP Server MCP server in PolicyLayer and add a rule for create_pull_request_reply: 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 AtomGit MCP Server. Nothing to install.
create_pull_request_reply 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 create_pull_request_reply 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 create_pull_request_reply. 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.
create_pull_request_reply is provided by the AtomGit MCP Server MCP server (kaiyuanxiaobing/atomgit-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from AtomGit MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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22 AtomGit MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.