knowledge_archive · Chisel Knowledge MCP: Risk & Policy

WHAT IT DOES

What knowledge_archive does on Chisel Knowledge MCP

AI agents use knowledge_archive 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_archive needs a policy

This is a Write operation because it modifies the location/organization of data within the knowledge workspace. Moving files to an archive subdirectory is a reversible action (files can be moved back or restored), so it does not qualify as Destructive.

From the tool's definition Tool description states 'Move a processed inbox file to inbox/archived/' — this reversibly relocates a file within the workspace directory structure without deletion or destruction.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

knowledge_archive Rate-limited

knowledge_archive 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_archive": {
      "limits": [
        {
          "counter": "knowledge_archive_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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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_archive

What does the knowledge_archive tool do? +

Move a processed inbox file to inbox/archived/. 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_archive? +

Register the Chisel Knowledge MCP server in PolicyLayer and add a rule for knowledge_archive: 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_archive? +

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

Can I rate-limit knowledge_archive? +

Yes. Add a rate_limit block to the knowledge_archive 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_archive completely? +

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

knowledge_archive 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.