knowledge_sync_repo · Knowledge MCP: Risk & Policy

WHAT IT DOES

What knowledge_sync_repo does on Knowledge MCP

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

WHY IT NEEDS A POLICY

Why knowledge_sync_repo needs a policy

This tool updates/modifies the knowledge base to reflect code changes, making it a Write operation that creates or modifies data reversibly. It does not delete data (would be Destructive), execute arbitrary code (would be Execute), or retrieve data (would be Read).

From the tool's definition Tool description states "Force an immediate delta-sync (update) of the local knowledge base" — modifies the knowledge base state via synchronization. The description uses 'sync' and 'update' language indicating data modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

knowledge_sync_repo Rate-limited

knowledge_sync_repo 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_sync_repo": {
      "limits": [
        {
          "counter": "knowledge_sync_repo_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 Knowledge MCP, so you can run agents against it safely.

FAQ

Questions about knowledge_sync_repo

What does the knowledge_sync_repo tool do? +

Force an immediate delta-sync (update) of the local knowledge base for a specific repository. Use this after you have made code changes to ensure the knowledge base is up to date. It is categorised as a Write tool in the 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_sync_repo? +

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

What risk level is knowledge_sync_repo? +

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

Can I rate-limit knowledge_sync_repo? +

Yes. Add a rate_limit block to the knowledge_sync_repo 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_sync_repo completely? +

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

knowledge_sync_repo is provided by the Knowledge MCP server (paulthesecond/knowledgebase-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.