capacities_save_to_daily_note · Capacities MCP Worker MCP

WHAT IT DOES

What capacities_save_to_daily_note does on Capacities MCP Worker

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

WHY IT NEEDS A POLICY

Why capacities_save_to_daily_note needs a policy

This tool modifies data (appends to a daily note) without permanently deleting or overwriting existing content, making it a Write operation. Severity is medium because malicious content could be injected into the user's knowledge base, but the operation is reversible and limited in scope to a single daily note.

From the tool's definition Tool name 'capacities_save_to_daily_note' and description 'Append markdown content to today' indicate creation/modification of a daily note with new content. The verb 'append' is a reversible write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

capacities_save_to_daily_note Rate-limited

capacities_save_to_daily_note 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": {
    "capacities_save_to_daily_note": {
      "limits": [
        {
          "counter": "capacities_save_to_daily_note_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 Capacities MCP Worker, so you can run agents against it safely.

FAQ

Questions about capacities_save_to_daily_note

What does the capacities_save_to_daily_note tool do? +

Append markdown content to today. It is categorised as a Write tool in the Capacities MCP Worker MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on capacities_save_to_daily_note? +

Register the Capacities MCP Worker MCP server in PolicyLayer and add a rule for capacities_save_to_daily_note: 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 Capacities MCP Worker. Nothing to install.

What risk level is capacities_save_to_daily_note? +

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

Can I rate-limit capacities_save_to_daily_note? +

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

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

capacities_save_to_daily_note is provided by the Capacities MCP Worker MCP server (tieubao/capacities-mcp-worker). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.