myob_raw_commit_mutation · MYOB Codex MCP: Risk & Policy

WHAT IT DOES

What myob_raw_commit_mutation does on MYOB Codex MCP

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

WHY IT NEEDS A POLICY

Why myob_raw_commit_mutation needs a policy

The tool commits mutations to MYOB (an accounting/business platform), modifying financial data. While it requires an approval token (reducing some risk), it performs arbitrary mutations against the MYOB API. The exact nature of mutations is unspecified — it could range from creating/updating records (Write) to deleting them (Destructive) or even triggering financial transactions (Financial).

From the tool's definition Commit an approved raw MYOB mutation. This mutates MYOB and requires a valid approval token.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

myob_raw_commit_mutation Rate-limited

myob_raw_commit_mutation 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": {
    "myob_raw_commit_mutation": {
      "limits": [
        {
          "counter": "myob_raw_commit_mutation_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 MYOB Codex MCP, so you can run agents against it safely.

FAQ

Questions about myob_raw_commit_mutation

What does the myob_raw_commit_mutation tool do? +

Commit an approved raw MYOB mutation. This mutates MYOB and requires a valid approval token. It is categorised as a Write tool in the MYOB Codex 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 myob_raw_commit_mutation? +

Register the MYOB Codex MCP server in PolicyLayer and add a rule for myob_raw_commit_mutation: 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 MYOB Codex MCP. Nothing to install.

What risk level is myob_raw_commit_mutation? +

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

Can I rate-limit myob_raw_commit_mutation? +

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

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

myob_raw_commit_mutation is provided by the MYOB Codex MCP server (jaeko44/myob-codex-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.