cmux-test-bisect

cmux-test-bisect is a skill for Codex from manaflow-ai/cmux. It costs 81 tokens per session (1,564 once invoked), scanned A, original, no licence file.

A test-history tool for finding which older commit first caused a Swift package test suite to fail. It compares results across commits and helps distinguish outdated tests from code regressions.

In plain words
What is it for?
Use it to investigate broken continuous-integration tests and identify the change that introduced the failure.
Why use it?
It removes the need to inspect every change manually when tests on the main branch are failing.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Good fit Use it to investigate broken continuous-integration tests and identify the change that introduced the failure.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/manaflow-ai/cmux/cmux-test-bisect
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add manaflow-ai/cmux --skill cmux-test-bisect
Clone the repo
git clone --depth 1 https://github.com/manaflow-ai/cmux

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cmux-test-bisect

README.md
[![agentmods](https://agentmods.dev/badge/skills/manaflow-ai/cmux/cmux-test-bisect/github.svg)](https://agentmods.dev/skills/manaflow-ai/cmux/cmux-test-bisect)
Your own site
<a href="https://agentmods.dev/skills/manaflow-ai/cmux/cmux-test-bisect"><img src="https://agentmods.dev/badge/skills/manaflow-ai/cmux/cmux-test-bisect/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cmux-test-bisect

Your own site · 80×15
<a href="https://agentmods.dev/skills/manaflow-ai/cmux/cmux-test-bisect"><img src="https://agentmods.dev/badge/skills/manaflow-ai/cmux/cmux-test-bisect.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,564 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00081 $0.01564
Opus 5.5 $0.00032 $0.00626
Sonnet 5.5 $0.00016 $0.00313
Haiku 4.5 $0.00008 $0.00156

Measured 20d ago against content hash c17fadd596ce, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cmux-test-bisect scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 20d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/cmux-test-bisect/SKILL.md · 109 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 20d ago First seen · 109 lines · 81 tokens per session scan A c17fadd596ce

Subscribe to this mod's changes

cmux-test-bisect is a skill published in the GitHub repository manaflow-ai/cmux (28,194 stars, last pushed today), with no licence file. It adds 81 tokens to every session and 1,564 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-26.