preview_write · Odoo MCP Server MCP: Risk & Policy

WHAT IT DOES

What preview_write does on Odoo MCP Server

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

WHY IT NEEDS A POLICY

Why preview_write needs a policy

Although this tool includes 'preview' functionality (suggesting it may not execute), it is designed to handle write and unlink operations on Odoo records. The most severe applicable category among the operations it touches is Destructive (unlink = delete), but since the tool explicitly previews rather than executes, and the primary use case appears to be reversible write operations, Write is the appropriate…

From the tool's definition Tool name 'preview_write' and description 'Preview create, write, or unlink without executing it' directly indicates capability to perform write operations (create, write) and destructive operations (unlink).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

preview_write Rate-limited

preview_write 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": {
    "preview_write": {
      "limits": [
        {
          "counter": "preview_write_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 Odoo MCP Server, so you can run agents against it safely.

FAQ

Questions about preview_write

What does the preview_write tool do? +

Preview create, write, or unlink without executing it. It is categorised as a Write tool in the Odoo 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 preview_write? +

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

What risk level is preview_write? +

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

Can I rate-limit preview_write? +

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

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

preview_write is provided by the Odoo MCP Server MCP server (pypi:odoo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.