Plzebo MCP Server
by wkoverfieldio.github.wkoverfield/plzebov0.2.0
Cost-parity bench for agent loops: $/success and time across model mixes, with verifiable receipts.
context tax
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security
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cold start
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freshness
Maintained56d ago
Install Plzebo MCP server
Install in Claude Code
claude mcp add plzebo -e ANTHROPIC_API_KEY='<anthropic-api-key>' -e OPENAI_API_KEY='<openai-api-key>' -- npx -y plzeboInstall in Cursor
{
"mcpServers": {
"plzebo": {
"command": "npx",
"args": [
"-y",
"plzebo"
],
"env": {
"ANTHROPIC_API_KEY": "<anthropic-api-key>",
"OPENAI_API_KEY": "<openai-api-key>"
}
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
Install in Claude Desktop
{
"mcpServers": {
"plzebo": {
"command": "npx",
"args": [
"-y",
"plzebo"
],
"env": {
"ANTHROPIC_API_KEY": "<anthropic-api-key>",
"OPENAI_API_KEY": "<openai-api-key>"
}
}
}
}Settings → Developer → Edit Config (claude_desktop_config.json), then restart.
Install in VS Code
{
"servers": {
"plzebo": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"plzebo"
],
"env": {
"ANTHROPIC_API_KEY": "<anthropic-api-key>",
"OPENAI_API_KEY": "<openai-api-key>"
}
}
}
}Add to .vscode/mcp.json in your workspace.
Install in Windsurf
{
"mcpServers": {
"plzebo": {
"command": "npx",
"args": [
"-y",
"plzebo"
],
"env": {
"ANTHROPIC_API_KEY": "<anthropic-api-key>",
"OPENAI_API_KEY": "<openai-api-key>"
}
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
Configuration
| Variable | Required | Secret | Description |
|---|---|---|---|
| ANTHROPIC_API_KEY | — | yes | Real Anthropic key for placebo-mode arms; arms only ever see placebo keys. Optional when every arm uses passthrough auth. |
| OPENAI_API_KEY | — | yes | Real OpenAI-compatible key for placebo-mode arms. Optional when every arm uses passthrough auth. |
Freshness
Maintained — last maintenance signal 56d ago. The newest of the signals below sets the band.
Last commit (default branch)
2026-08-14 · 56d ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-08-14 · 56d ago · official registry · v0.2.0
FAQ
›How do I install the Plzebo MCP server in Claude Code?
Run: claude mcp add plzebo -e ANTHROPIC_API_KEY='<anthropic-api-key>' -e OPENAI_API_KEY='<openai-api-key>' -- npx -y plzebo. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does Plzebo require an API key?
Yes. It expects ANTHROPIC_API_KEY, OPENAI_API_KEY, of which 2 are secrets.
›Can I use Plzebo as a remote (hosted) MCP server?
No hosted endpoint is published; it runs locally over stdio.
›Is Plzebo in the official MCP registry?
Yes, as io.github.wkoverfield/plzebo.