update_part · Sevdesk MCP: Risk & Policy

WHAT IT DOES

What update_part does on Sevdesk

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

WHY IT NEEDS A POLICY

Why update_part needs a policy

The tool updates existing parts in an accounting system, which constitutes a Write operation. While the severity is medium rather than high because updates are typically reversible and don't directly move money or delete data, misuse could cause financial discrepancies in inventory records or costing.

From the tool's definition Tool name is 'update_part' and description states 'Update an existing part in sevdesk'. This modifies existing data (parts/inventory items) in a reversible manner without deleting or creating new records.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_part Rate-limited

update_part 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_part": {
      "limits": [
        {
          "counter": "update_part_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 Sevdesk, so you can run agents against it safely.

FAQ

Questions about update_part

What does the update_part tool do? +

Update an existing part in sevdesk. It is categorised as a Write tool in the Sevdesk 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_part? +

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

What risk level is update_part? +

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

Can I rate-limit update_part? +

Yes. Add a rate_limit block to the update_part 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_part completely? +

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

update_part is provided by the Sevdesk MCP server (codestra/sevdesk-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.