update_timeslip · FreeAgent MCP Server MCP: Risk & Policy

WHAT IT DOES

What update_timeslip does on FreeAgent MCP Server

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

WHY IT NEEDS A POLICY

Why update_timeslip needs a policy

This tool modifies existing timeslip records reversibly (updates rather than deletes). The impact is limited to a single user's time records, which affects billing/invoicing accuracy but is not destructive (the change can be corrected by another update). Severity is medium because incorrect timeslip data can cause financial discrepancies in invoicing or time tracking, but the effect is containable and reversible.

From the tool's definition Tool name 'update_timeslip' and description 'Update an existing timeslip' indicate modification of existing data. FreeAgent is a time tracking and accounting platform; timeslips represent billable hours or time records.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_timeslip Rate-limited

update_timeslip 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": {
    "update_timeslip": {
      "limits": [
        {
          "counter": "update_timeslip_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 FreeAgent MCP Server, so you can run agents against it safely.

FAQ

Questions about update_timeslip

What does the update_timeslip tool do? +

Update an existing timeslip. It is categorised as a Write tool in the FreeAgent MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_timeslip? +

Register the FreeAgent MCP Server MCP server in PolicyLayer and add a rule for update_timeslip: 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 FreeAgent MCP Server. Nothing to install.

What risk level is update_timeslip? +

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

Can I rate-limit update_timeslip? +

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

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

update_timeslip is provided by the FreeAgent MCP Server MCP server (markpitt/freeagent-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.