password_create · Mcp 1password MCP: Risk & Policy

WHAT IT DOES

What password_create does on Mcp 1password

AI agents use password_create to create or update resources in Mcp 1password — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp 1password environment.

WHY IT NEEDS A POLICY

Why password_create needs a policy

This tool creates new password entries in 1Password, which is a reversible write operation (items can be archived or deleted later). While it manages sensitive secrets, the creation itself is a Write action rather than Destructive.

From the tool's definition Tool name 'password_create' and description states 'Create a login/password item' — this creates new data in the 1Password vault. The description confirms it 'Returns redacted item metadata only,' indicating it modifies vault state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

password_create Rate-limited

password_create 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": {
    "password_create": {
      "limits": [
        {
          "counter": "password_create_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 Mcp 1password, so you can run agents against it safely.

FAQ

Questions about password_create

What does the password_create tool do? +

Create a login/password item with either a provided password or a generated one. Returns redacted item metadata only. It is categorised as a Write tool in the Mcp 1password MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on password_create? +

Register the Mcp 1password MCP server in PolicyLayer and add a rule for password_create: 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 Mcp 1password. Nothing to install.

What risk level is password_create? +

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

Can I rate-limit password_create? +

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

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

password_create is provided by the Mcp 1password MCP server (kefapps/onepassword-mcp-codex). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.