Low Risk

read_repomix_output

Read the contents of a Repomix-generated output file. Supports partial reading with line range specification for large files. This tool is designed for environments where direct file system access is limited (e.g., web-based environments, sandboxed applications). For direct file system access, us...

How to control read_repomix_output ↓

AI agents call read_repomix_output to retrieve information from Repomix without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

This tool retrieves and queries data from Repomix-generated output files without creating, modifying, deleting, or executing anything. It is a read-only operation that provides access to previously packaged codebase content. The capability to specify line ranges for partial reading does not change the fundamental read-only nature of the operation.

From the tool's definition Tool description explicitly states 'Read the contents of a Repomix-generated output file' and 'Supports partial reading with line range specification'. The verb 'read' and the stated purpose confirm data retrieval with no modification or side effects.

Documented attack patterns abuse exactly the kind of access read_repomix_output gives an agent:

PolicyLayer is an MCP gateway — it sits between your AI agents and Repomix, and nothing reaches the server without passing your rules. This is the rule we recommend for read_repomix_output:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "read_repomix_output": {}
  }
}

read_repomix_output is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register Repomix — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Go deeper

What does the read_repomix_output tool do? +

Read the contents of a Repomix-generated output file. Supports partial reading with line range specification for large files. This tool is designed for environments where direct file system access is limited (e.g., web-based environments, sandboxed applications). For direct file system access, use standard file operations. It is categorised as a Read tool in the Repomix MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on read_repomix_output? +

Register the Repomix MCP server in PolicyLayer and add a rule for read_repomix_output: 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 Repomix. Nothing to install.

What risk level is read_repomix_output? +

read_repomix_output is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit read_repomix_output? +

Yes. Add a rate_limit block to the read_repomix_output 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.

How do I block read_repomix_output completely? +

Set action: deny in the PolicyLayer policy for read_repomix_output. 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.

What MCP server provides read_repomix_output? +

read_repomix_output is provided by the Repomix MCP server (yamadashy/repomix). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Repomix tool call.

Deterministic rules across all 8 Repomix tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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8 Repomix tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

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