Package a local code directory into a consolidated file for AI analysis. This tool analyzes the codebase structure, extracts relevant code content, and generates a comprehensive report including metrics, file tree, and formatted code content. Supports multiple output formats: XML (structured with...
AI agents call pack_codebase 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.
pack_codebase retrieves and processes existing codebase data to generate reports and packaged output. It has no side effects on the underlying repository or file system — it only reads code content and reformats it. The tool explicitly does not execute code, delete files, or modify the repository. This is fundamentally a Read operation with organizational/formatting enhancements.
From the tool's definition Tool description states it 'analyzes the codebase structure, extracts relevant code content, and generates a comprehensive report' — core functions are analysis and reading.
Documented attack patterns abuse exactly the kind of access pack_codebase 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 pack_codebase:
{
"version": "1",
"default": "deny",
"tools": {
"pack_codebase": {}
}
}pack_codebase is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Package a local code directory into a consolidated file for AI analysis. This tool analyzes the codebase structure, extracts relevant code content, and generates a comprehensive report including metrics, file tree, and formatted code content. Supports multiple output formats: XML (structured with <file> tags), Markdown (human-readable with ## headers and code blocks), JSON (machine-readable with files as key-value pairs), and Plain text (simple format with separators). Also supports Tree-sitter compression for efficient token usage. It is categorised as a Read tool in the Repomix MCP Server, which means it retrieves data without modifying state.
Register the Repomix MCP server in PolicyLayer and add a rule for pack_codebase: 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.
pack_codebase 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 pack_codebase 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 pack_codebase. 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.
pack_codebase 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.
Deterministic rules across all 8 Repomix tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
8 Repomix tools catalogued and risk-classified — across an index of 42,500+ MCP servers.