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1password

1password is an MCP server for Claude Code, Codex, Cursor, Gemini CLI, OpenCode from CakeRepository/1Password-MCP. Its token cost is not measured, scanned A, original, Apache-2.0.

A local connector for 1Password service accounts, which are restricted accounts used by software to access selected vaults and credentials. It runs through the 1Password MCP package and needs three environment variables.

In plain words
What is it for?
Use it when an agent needs access to credentials or other items stored in 1Password vaults. You must provide the required service-account and keychain settings.
Why use it?
It lets the coding agent work with 1Password vault data and credentials without manually copying them into a task.

MCP server for Claude CodeCodexCursorGemini CLIOpenCode

Written for no agent in particular: it speaks MCP, so any client can run it.

not rated 20repo 7d ago A scan tokens not measured original Apache-2.0

Good fit Use it when an agent needs access to credentials or other items stored in 1Password vaults. You must provide the required service-account and keychain settings.

Compare 6 mcp servers from other repositories ↓
Install with agentmods
npx agentmods add mcp/cakerepository/1password-mcp/1password
View source ↗ CakeRepository/1Password-MCP flowdevs.io
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/CakeRepository/1Password-MCP

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for 1password

README.md
[![agentmods](https://agentmods.dev/badge/mcp/cakerepository/1password-mcp/1password.svg)](https://agentmods.dev/mcp/cakerepository/1password-mcp/1password)
Your own site
<a href="https://agentmods.dev/mcp/cakerepository/1password-mcp/1password"><img src="https://agentmods.dev/badge/mcp/cakerepository/1password-mcp/1password.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

1password scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

server.json · 14 lines

What it actually says

{
  "1password": {
    "command": "npx",
    "args": [
      "-y",
      "@takescake/1password-mcp"
    ],
    "env": {
      "OP_SERVICE_ACCOUNT_TOKEN": "",
      "OP_KEYCHAIN_SERVICE": "",
      "OP_KEYCHAIN_ACCOUNT": ""
    }
  }
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 14 lines scan A c27050c1873c

Subscribe to this mod's changes

1password is an MCP server published in the GitHub repository CakeRepository/1Password-MCP (20 stars, last pushed 7d ago), licensed Apache-2.0. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

1password1password-integrationSecuritymcp
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