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Lockbox

Send API keys and private files to someone else's agent, end-to-end encrypted.

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Install Lockbox

Pick your client, then add it in one click or paste the config.

Streamable HTTP (Remote)
Server URL
https://lockbox.run/mcp

Remote servers are added in the app, not the config file: Customize → Connectors → Add custom connector, then paste this URL.

Overview

Security & health

What it can reach and how reliably it runs — from our own checks, not the maintainer’s claims.

ActiveLast checked Today

Recent health check succeeded.

6/6 checks healthy over the last 21d

Adoption & maintenance

Factual signals from GitHub, npm, and our automated checks — not a rating.

Last commit27d agoMost recent push to the default branch.
Directory activity2 viewsConfig copies, upvotes, and views on AllMCPs.

From the project README

Lockbox skills and plugin

Send API keys and private files to someone else's agent, end-to-end encrypted. lockbox.run

This repo holds the agent-facing parts of Lockbox: the lockbox skill and a plugin bundle for Claude Code, Codex and Cursor. The skill teaches your coding agent to use the lockbox CLI (npm i -g @opslane/lockbox) so keys go from one .env to another without being printed or pasted into chat.

Install

Any agent that reads skills (via skills.sh):

Terminal
npx skills add opslane/lockbox-skills

Claude Code:

Terminal
claude plugin marketplace add opslane/lockbox-skills
claude plugin install lockbox@opslane

Claude.ai and ChatGPT: add https://lockbox.run/mcp as a connector. The Lockbox panel opens in the chat.

Then install the CLI and sign in:

Terminal
npm i -g @opslane/lockbox
lockbox login you@company.com

What's here

PathWhat it is
skills/lockbox/The skill (Agent Skills format)
plugins/lockbox/The plugin bundle: the same skill, manifests for Claude Code, Codex and Cursor, and mcp.json
.claude-plugin/marketplace.jsonA Claude Code marketplace with this one plugin

The CLI and the Lockbox server are not in this repo. Docs: lockbox.run/docs. Security questions: support@lockbox.run.

License

MIT, for the files in this repo. See LICENSE.

Read the full README View source on GitHub

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Frequently Asked Questions about Lockbox

Lockbox is an MCP server that lets you send API keys and private files from one agent to another with end-to-end encryption. It is designed to move secrets between `.env` files without printing or pasting them into chat. You can connect it at https://lockbox.run/mcp in Claude.ai or ChatGPT.

Connect the URL https://lockbox.run/mcp as a connector in Claude.ai or ChatGPT. The Lockbox panel opens in the chat after the connector is added.

Install the CLI with `npm i -g @opslane/lockbox`, then sign in with `lockbox login you@company.com`. The CLI is the agent-facing tool used to move keys from one `.env` file to another.

Install the agent skill with `npx skills add opslane/lockbox-skills`. For Claude Code, you can instead add the marketplace with `claude plugin marketplace add opslane/lockbox-skills` and install it with `claude plugin install lockbox@opslane`.

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