AI agents call read_file_func to retrieve information from Fs Git without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves file contents from a git repository without side effects or modifications. It is a straightforward read operation that queries existing data. The git-enforced filesystem context does not change the fundamental nature of a read operation—it simply means the file contents are managed by git, but the tool itself only retrieves them.
From the tool's definition Tool name contains 'read' and description explicitly states 'Read file from repository' with no mention of modification, deletion, or execution capabilities.
Attacks that exploit this kind of access
Read file from repository. It is categorised as a Read tool in the Fs Git MCP Server, which means it retrieves data without modifying state.
Register the Fs Git MCP server in PolicyLayer and add a rule for read_file_func: 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 Fs Git. Nothing to install.
read_file_func 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 read_file_func 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 read_file_func. 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.
read_file_func is provided by the Fs Git MCP server (wojons/fs-git-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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