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PopNx MCPMCP servers for people who use AI · explained in plain words

Bitatlas

by bitatlas-groupversion 1.1.0i★ –iRuns on your computer
Registry nameio.github.bitatlas-group/bitatlas

Install

Overview

Description from the maker (original English)

Zero-knowledge encrypted storage for humans and AI agents. Client-side AES-256-GCM, EU-hosted.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs on your computer
  • Transport: stdio
  • Category: Search & AI memory
  • You need to fill in: BITATLAS_API_KEY, BITATLAS_MASTER_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 1 of 1 passed
  • Runs on your computer with your user’s permissions (files, network, apps).
  • You fill in yourself: BITATLAS_API_KEY, BITATLAS_MASTER_KEY, BITATLAS_API_URL, BITATLAS_WEB_URL

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

  • npmNode.js installed (for the npx command)

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "bitatlas": {
      "command": "npx",
      "args": [
        "-y",
        "@bitatlas/mcp-server"
      ],
      "env": {
        "BITATLAS_API_KEY": "your-value",
        "BITATLAS_MASTER_KEY": "your-value",
        "BITATLAS_API_URL": "your-value",
        "BITATLAS_WEB_URL": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add bitatlas --env BITATLAS_API_KEY=your-value --env BITATLAS_MASTER_KEY=your-value --env BITATLAS_API_URL=your-value --env BITATLAS_WEB_URL=your-value -- npx -y @bitatlas/mcp-server

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "bitatlas": {
      "command": "npx",
      "args": [
        "-y",
        "@bitatlas/mcp-server"
      ],
      "env": {
        "BITATLAS_API_KEY": "your-value",
        "BITATLAS_MASTER_KEY": "your-value",
        "BITATLAS_API_URL": "your-value",
        "BITATLAS_WEB_URL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "bitatlas": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@bitatlas/mcp-server"
      ],
      "env": {
        "BITATLAS_API_KEY": "your-value",
        "BITATLAS_MASTER_KEY": "your-value",
        "BITATLAS_API_URL": "your-value",
        "BITATLAS_WEB_URL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

  • BITATLAS_API_KEY secret required env
    Your BitAtlas API key (starts with ba_). Generate one at https://bitatlas.com/vault/settings
  • BITATLAS_MASTER_KEY secret env
    Your hex-encoded 256-bit master key (64 hex chars). Required for file upload and download. Derived from your password client-side — never sent to BitAtlas servers.
  • BITATLAS_API_URL env
    BitAtlas API base URL (default: https://api.bitatlas.com)
  • BITATLAS_WEB_URL env
    Web origin used to build share links (default: https://www.bitatlas.com)

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account bitatlas-group, which owns the repo

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • – Not applicable

    Endpoint responds

    This one runs on your computer; there is no internet endpoint

  • – Not applicable

    Sign-in with OAuth

    Runs on your computer and uses local settings instead

  • … Not checked yet

    No hidden instructions in tool descriptions

    Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Search & AI memoryi

  • More stars than 0% of the other 5670 servers in this category
  • Published to the registry more recently than 17% of the other 5670 servers in this category
  • Basic checks equal to or better than 100% of the other 5670 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Bitatlas safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: BITATLAS_API_KEY, BITATLAS_MASTER_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.1.0) reached the registry 5 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Context7

by upstash

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

Computer or cloud★ 64,224MITUpdated yesterday
Install

Codebase Memory

by DeusData

Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

Runs on your computer★ 48,148MITUpdated 21 days ago
Install

Exa

by exa-labs

Connect AI agents to Exa for web search, content fetching, and multi-step research.

Runs in the cloud★ 5,213MITUpdated 2 months ago
Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

BitAtlas MCP Server 🤖

Zero-Knowledge Cloud Drive persistence for AI agents.

This Model Context Protocol (MCP) server allows AI agents to securely interact with the BitAtlas vault. All files are encrypted client-side, meaning the server never sees the plaintext data.

Features

  • Search & List Vault: Agents can browse encrypted file metadata.
  • Secure Retrieval: Agents can fetch encrypted blobs and decryption metadata.
  • Zero-Knowledge: The agent performs decryption locally using the user's provided master key.
  • Hand a file to a human: bitatlas_share_file mints a public link the host *cannot read* — the decryption key rides in the URL fragment, never reaching BitAtlas. The canonical "agent produces an artifact → human opens a link" handoff, without giving up zero knowledge.

Tools

ToolPurpose
bitatlas_vault_statusVault health, file count, storage usage
bitatlas_list_filesList file metadata (filter by folder/category/search)
bitatlas_searchSearch files by name
bitatlas_get_fileDownload + decrypt a file's content
bitatlas_upload_fileEncrypt a local file client-side and upload it
bitatlas_delete_fileDelete a file
bitatlas_create_folderCreate a folder
bitatlas_share_fileCreate a public, zero-knowledge share link (/s/ #k=…) to hand a file to a human. ⚠️ Anyone with the link can read the file.
bitatlas_list_sharesList your share links with expiry, download count, and status
bitatlas_revoke_shareRevoke a share link (stops future downloads)

Installation

For AI Agents (Claude Desktop, OpenClaw, etc.)

Add this to your MCP settings:

{

"mcpServers": { "bitatlas": { "command": "npx", "args": ["-y", "@bitatlas/mcp-server"], "env": { "BITATLAS_API_KEY": "your-api-key", "BITATLAS_MASTER_KEY": "your-derived-master-key" } } } }

x402 Wallet Mode (No Account Required)

Instead of an API key, agents can pay per request using a crypto wallet with USDC on Base:

{

"mcpServers": { "bitatlas": { "command": "npx", "args": ["-y", "@bitatlas/mcp-server"], "env": { "BITATLAS_WALLET_PRIVATE_KEY": "0xabc...", "BITATLAS_MASTER_KEY": "your-64-hex-char-master-key" } } } }

No signup. No API key. The agent pays per request in USDC and gets full vault access. Files include 30 days of storage and can be renewed.

Priority: If both BITATLAS_API_KEY and BITATLAS_WALLET_PRIVATE_KEY are set, the API key is preferred (free within quota).

Environment Variables

VariableRequiredDescription
BITATLAS_API_KEYOne of API key or walletPersonal access token from bitatlas.com
BITATLAS_WALLET_PRIVATE_KEYOne of API key or walletEVM private key for x402 payments
BITATLAS_MASTER_KEYFor encrypt/decrypt64-char hex string (256-bit master key)
BITATLAS_API_URLNoDefaults to https://api.bitatlas.com
BITATLAS_WEB_URLNoWeb origin used to build share links. Defaults to https://www.bitatlas.com

Development

npm install

npm run start

License

MIT

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