knowledge_compile_extend · Chisel Knowledge MCP

WHAT IT DOES

What knowledge_compile_extend does on Chisel Knowledge MCP

AI agents use knowledge_compile_extend to create or update resources in Chisel Knowledge MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Chisel Knowledge MCP environment.

WHY IT NEEDS A POLICY

Why knowledge_compile_extend needs a policy

The tool creates/modifies files (article, index.md, log.md) and archives an inbox file. These are reversible write operations—updating and appending structured content—with no irreversible deletion or financial impact. Severity is medium because it modifies multiple files across a knowledge base, but changes are recoverable.

From the tool's definition Write an updated article to knowledge/, update the Updated column in index.md, append to log.md, and archive the inbox file

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

knowledge_compile_extend Rate-limited

knowledge_compile_extend stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "knowledge_compile_extend": {
      "limits": [
        {
          "counter": "knowledge_compile_extend_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Chisel Knowledge MCP, so you can run agents against it safely.

FAQ

Questions about knowledge_compile_extend

What does the knowledge_compile_extend tool do? +

Write an updated article to knowledge/, update the Updated column in index.md, append to log.md, and archive the inbox file. Call this when decision is. It is categorised as a Write tool in the Chisel Knowledge MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on knowledge_compile_extend? +

Register the Chisel Knowledge MCP server in PolicyLayer and add a rule for knowledge_compile_extend: 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 Chisel Knowledge MCP. Nothing to install.

What risk level is knowledge_compile_extend? +

knowledge_compile_extend is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit knowledge_compile_extend? +

Yes. Add a rate_limit block to the knowledge_compile_extend 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 knowledge_compile_extend completely? +

Set action: deny in the PolicyLayer policy for knowledge_compile_extend. 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 knowledge_compile_extend? +

knowledge_compile_extend is provided by the Chisel Knowledge MCP server (teknologika/chisel-knowledge-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.