op_get

Look up a 1Password item (passwords masked).

SERVERYaver SOURCEyaver-cli

Low RISK CLASS

Category Read

Parameters 21 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-kivanccakmak-yaver/op-get.md

WHAT IT DOES

What op_get does on Yaver

AI agents call op_get to retrieve information from Yaver without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`item`	string	Yes	Item name or ID
`vault`	string	—

Parameters from the server's own tool schema.

RISK

Why op_get is rated Low

The tool retrieves sensitive data (passwords, API keys, credentials stored in 1Password) from a credential vault. While the description notes passwords are masked, the tool still accesses and returns sensitive account information.

From the tool's definition Tool description states 'Look up a 1Password item (passwords masked)' — this is a retrieval operation that queries stored secrets/credentials.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs op_get safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Yaver, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For op_get, this is the rule to start with:

op_get Allowed

op_get is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "op_get": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Yaver, apply this rule, and every op_get call is checked against it from then on.

FAQ

Questions about op_get

What does the op_get tool do? +

Look up a 1Password item (passwords masked). It is categorised as a Read tool in the Yaver MCP Server, which means it retrieves data without modifying state.

What parameters does op_get accept? +

op_get accepts 2 parameters: item, vault. Required: item. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on op_get? +

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

What risk level is op_get? +

op_get is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit op_get? +

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

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

op_get is provided by the Yaver MCP server (yaver-cli). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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