Blackwall MCP Server

by blackwalltier Your server? Claim it

local only

Blackwall runs on your own machine — the client starts it, so there is no endpoint to ping. 135 installs a week from npm. Last commit 15 Sep 2026.

API-key pre-action risk gate: any irreversible agent action (money, SQL, delete, email).

Installs per day peak 86 · avg 26 · +49% w/w

a month agotoday

135

Installs / week

npm · blackwall-mcp

Stars

1 open issues

15 Sep 2026

Last commit

0 releases in 90 days

MIT

License

JavaScript

Nothing serious here today

Today is the operative word: we check Blackwall every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add blackwall -- npx -y blackwall-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "blackwall": {
      "args": [
        "-y",
        "blackwall-mcp"
      ],
      "command": "npx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.blackwall]
command = "npx"
args = ["-y", "blackwall-mcp"]

.cursor/mcp.json

{
  "mcpServers": {
    "blackwall": {
      "args": [
        "-y",
        "blackwall-mcp"
      ],
      "command": "npx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "blackwall": {
      "args": [
        "-y",
        "blackwall-mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: BLACKWALL_API_KEY (Your BLACK_WALL API key (bw_live_…) from https://blackwalltier.com/dashboard/keys), BLACKWALL_MODE (observe (log only, never block) or enforce (default).). The author declared them in the registry entry; get the values from the project itself.

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Blackwall — questions

Answers built from our own checks of this server.

Why is there no uptime for Blackwall?

Blackwall runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package blackwall-mcp was installed 135 times last week.

How do I connect Blackwall?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls blackwall-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Blackwall?

The npm package blackwall-mcp was installed 135 times in the last week. Week over week that is +49%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Blackwall open source?

Yes — it is published under the MIT licence, written in JavaScript, 0 stars on GitHub and 1 open issue. The source link is on this page, so you can read exactly what it does with your data before you connect it.