Extract code blocks from markdown or text. Use this to:\n\n
AI agents call extract_code to retrieve information from Aider MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool parses and extracts existing content (code blocks) from markdown or text input. It does not modify, execute, delete, or persist data. The operation is purely informational and has no blast radius if invoked by an AI agent.
From the tool's definition The tool description indicates it 'Extract[s] code blocks from markdown or text' — a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access extract_code gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Aider MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for extract_code:
{
"version": "1",
"default": "deny",
"tools": {
"extract_code": {}
}
}extract_code 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.
Extract code blocks from markdown or text. Use this to:\n\n. It is categorised as a Read tool in the Aider MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Aider MCP Server MCP server in PolicyLayer and add a rule for extract_code: 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 Aider MCP Server. Nothing to install.
extract_code 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 extract_code 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 extract_code. 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.
extract_code is provided by the Aider MCP Server MCP server (sengokudaikon/aider-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 6 Aider MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
6 Aider MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.