Plzebo

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

Connector by wkoverfield · GitHub account verified by the MCP Registry

IndexedMITLocal (stdio)

Chalk Labs

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Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/wkoverfield-plzebo

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

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

Reviews

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools: 3 read · 0 write · 0 delete · 1 not yet classified
Secrets: 2 (API keys, tokens or passwords)
Install scripts: Not scanned yet
Runs as: Node.js package

Tools by what they do 4

Read from the source code; the running server may list different tools.

Read 3 · Look things up without changing anything.

measure_extend
measure_result
measure_status

Not yet classified 1 · We could not tell from the name and description.

measure_start

Secrets and settings it asks for

Secrets: values you paste in that let it act as you.

ANTHROPIC_API_KEY
OPENAI_API_KEY

Tools (4)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

measure_extend
Extend a completed measurement to a larger K, reusing its trials. First call ({receipt_path, to_k, budget_usd}): verifies the base receipt, returns an estimate and a one-time confirm token, spends nothing. Second call ({job_id, confirm_token}): runs the added trials. A receipt may be extended only once; the interim look is disclosed.
measure_result
Final verdict of a completed measure job: receipt path, per-arm summaries, comparisons with CIs and do-not-claim lists.
measure_start
Start a plzebo measurement. First call (spec, no confirm_token): validates, returns a cost estimate and a one-time confirm token, spends nothing. Second call ({job_id, confirm_token}): launches the trials in the background, spending real tokens up to budget_usd.
measure_status
Progress of a measure job: state, trials done, metered spend. Pass cancel:true to cancel (a trial in flight completes first).

Signals

Stars: 0
Forks: 0
Open issues: 0
Last commit: Aug 14, 2026 (2 months ago)
Last release: Aug 14, 2026 (2 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name: io.github.wkoverfield/plzebo
Version: 0.2.0
Auth: API key
Packages: npm plzebo
License: MIT
Repository: github.com/wkoverfield/plzebo
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Official MCP Registry github-graphql

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Rahil Jain, Co-founder, Chalk Labs. Ex-Goldman Sachs engineer. You talk to the person who builds it.

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Cite this page

Plzebo MCP server. Agent Mart. https://agentmart.dev/connectors/wkoverfield-plzebo (last updated 2026-10-24)