capture_knowledge_snapshot · Todos MCP: Risk & Policy

WHAT IT DOES

What capture_knowledge_snapshot does on Todos

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

WHY IT NEEDS A POLICY

Why capture_knowledge_snapshot needs a policy

The tool creates/writes a new snapshot artifact containing project knowledge (decisions, plans, conventions). This is a reversible write operation — it stores data but does not delete or overwrite existing records irreversibly. Misuse could pollute the knowledge base with incorrect information, hence medium severity.

From the tool's definition Capture a project knowledge snapshot bundling decisions, plans, and conventions.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

capture_knowledge_snapshot Rate-limited

capture_knowledge_snapshot 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": {
    "capture_knowledge_snapshot": {
      "limits": [
        {
          "counter": "capture_knowledge_snapshot_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 Todos, so you can run agents against it safely.

FAQ

Questions about capture_knowledge_snapshot

What does the capture_knowledge_snapshot tool do? +

Capture a project knowledge snapshot bundling decisions, plans, and conventions. It is categorised as a Write tool in the Todos MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on capture_knowledge_snapshot? +

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

What risk level is capture_knowledge_snapshot? +

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

Can I rate-limit capture_knowledge_snapshot? +

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

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

capture_knowledge_snapshot is provided by the Todos MCP server (@hasna/todos). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.