AI agents call getRepoFile to retrieve information from Github Repo without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves repository files without modifying them, making it a Read operation. Severity is medium because unauthorized access to repository files could expose sensitive credentials, private code, or proprietary logic. Confidence is moderated due to the lack of a description, though the naming and context strongly suggest file retrieval.
From the tool's definition Tool name 'getRepoFile' indicates file retrieval; description is empty but naming convention and sibling tools (getRepoAllDirectories, getRepoDirectories) suggest read-only directory/file enumeration operations.
Documented attack patterns abuse exactly the kind of access getRepoFile gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Github Repo, and nothing reaches the server without passing your rules. This is the rule we recommend for getRepoFile:
{
"version": "1",
"default": "deny",
"tools": {
"getRepoFile": {}
}
}getRepoFile is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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getRepoFile. It is categorised as a Read tool in the Github Repo MCP Server, which means it retrieves data without modifying state.
Register the Github Repo MCP server in PolicyLayer and add a rule for getRepoFile: 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 Github Repo. Nothing to install.
getRepoFile 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 getRepoFile 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 getRepoFile. 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.
getRepoFile is provided by the Github Repo MCP server (ryan0204/github-repo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Github Repo, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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3 Github Repo tools catalogued and risk-classified — across an index of 43,000+ MCP servers.