Plzebo MCP Server

by wkoverfield Your server? Claim it

local only

Plzebo runs on your own machine — the client starts it, so there is no endpoint to ping. 52 installs a week from npm. Last commit 14 Aug 2026.

Cost-parity bench for agent loops: $/success and time across model mixes, with verifiable receipts.

Installs per day peak 14 · avg 6 · +11% w/w

a month agotoday

Installs / week

npm · plzebo

Stars

0 open issues

14 Aug 2026

Last commit

1 release in 90 days

MIT

License

TypeScript

Nothing serious here today

Today is the operative word: we check Plzebo 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 plzebo -- npx -y plzebo

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

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

~/.codex/config.toml

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

.cursor/mcp.json

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

.vscode/mcp.json

{
  "servers": {
    "plzebo": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "plzebo"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: ANTHROPIC_API_KEY (Real Anthropic key for placebo-mode arms; arms only ever see placebo keys. Optional when every arm uses passthrough auth), OPENAI_API_KEY (Real OpenAI-compatible key for placebo-mode arms. Optional when every arm uses passthrough auth).

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Plzebo — questions

Answers built from our own checks of this server.

Why is there no uptime for Plzebo?

Plzebo 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 plzebo was installed 52 times last week.

How do I connect Plzebo?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls plzebo straight from npm; nothing to host, nothing to sign up for.

How many people use Plzebo?

The npm package plzebo was installed 52 times in the last week. Week over week that is +11%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Plzebo open source?

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