io.github.wkoverfield/plzebo MCP Server

io.github.wkoverfield/plzebo

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What is the io.github.wkoverfield/plzebo MCP server?

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

How to install io.github.wkoverfield/plzebo

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

ANTHROPIC_API_KEY
secret
Real Anthropic key for placebo-mode arms; arms only ever see placebo keys. Optional when every arm uses passthrough auth.
OPENAI_API_KEY
secret
Real OpenAI-compatible key for placebo-mode arms. Optional when every arm uses passthrough auth.

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

{
  "mcpServers": {
    "plzebo": {
      "command": "npx",
      "args": [
        "-y",
        "plzebo"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "<YOUR_ANTHROPIC_API_KEY>",
        "OPENAI_API_KEY": "<YOUR_OPENAI_API_KEY>"
      }
    }
  }
}