Lockbox

By Opslane

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Open in ChatGPT

Open in Claude

Overview

Send API keys and private files to a teammate, and to their agent, without pasting them into chat. Ask Claude to share a file or a secret and the Lockbox panel opens in the conversation. Pick the file or type the secret there; it's encrypted in your browser before it leaves. You get one link per person. Links can be locked to the recipient's email, expire, and open a set number of times. Recipients open links in the same panel, in a browser, or with the lockbox command-line tool. Claude never sees your file or secret through Lockbox: a file reaches the conversation only if you click "Send to chat". Lockbox's servers store only encrypted data.

Tools

list_shares

ChatGPT

List the shares you sent: who they're for, how many opens are left, and when they expire. Never shows contents.

open_link

ChatGPT

Open a lockbox.run link someone shared, in the Lockbox panel. Pass ONLY the 22-character id that follows /p/ in the link. Never pass the part after #: that is the key, and the user pastes the full link into the panel to unlock it. Contents stay in the panel unless the user chooses to send a file to you.

panel_claim

ChatGPT

Panel only: use one open of a package and get a download grant.

panel_create

ChatGPT

Panel only: reserve a package for ciphertext the panel will upload.

panel_finalize

ChatGPT

Panel only: finalize an uploaded package.

panel_keys

ChatGPT

Panel only: a recipient's enrollment state and device public keys.

revoke_share

ChatGPT

Revoke one of your shares by its 22-character id, so nobody can open it again. Copies already downloaded can't be recalled.

share_file

ChatGPT

Open the Lockbox panel to share files end-to-end encrypted. The user picks the files in the panel; never pass file contents to this tool. Optionally pre-fill recipients: each one gets their own link.

share_secret

ChatGPT

Open the Lockbox panel so the user can type a secret (an API key, a password) and share it, end-to-end encrypted and locked to each recipient (one link per person). Never pass the secret value to this tool or repeat it in chat: the user types it only into the panel.