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Absolute Deflake

Empirically detects nondeterministic tests via repeat/shuffle/parallel runs, diagnoses the root cause, and fixes it without retries, sleeps, or skips.

Dev & CodingIntermediate★ 219⑂ 30AI score 9/10Last updated: Jul 6, 2026

What it does

  • Runs your suite N times with randomized order, plus isolated vs. full/parallel runs, to record a failure rate per suspect test.
  • Diagnoses against seven common root causes: test-order/shared state, clock dependence, async races, unseeded randomness, network I/O, unordered collections, and resource/port leaks.
  • Forbids band-aids — no retry, no blind timeout bumps, no sleep, no skipping — then re-verifies across many randomized runs plus the full suite.
  • Triages into 3 waves and flags cases where the flake is a real product-code race rather than a test problem.

Who it's for

  • Teams whose CI goes red intermittently and can no longer trust the pipeline.
  • Developers burning down a backlog of retry/skip/flaky annotations.
  • Jest/Vitest, pytest, or Go test users hitting "passes locally, fails in CI".

Examples

  1. Say "absolute deflake" on a checkout suite — 20 shuffled runs reveal a 35% failure rate caused by an un-reset DB fixture, which then gets a proper teardown.
  2. "This test fails randomly in CI" — the skill injects a fake clock and replaces sleep with condition-based awaiting.
  3. In a Go repo, verify with go test -count=50 -shuffle=on -race ./... and fix port reuse by allocating unique ports.

· · · Install guide · · ·

Try it now, no install

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Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/maddhruv/absolute/HEAD/skills/absolute-deflake/SKILL.md

What I want: (describe your task here)

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Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
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Install in Claude Code

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Install the skill I found on Claude Skill Mart.
Copy the skills/absolute-deflake folder from the GitHub repo maddhruv/absolute into my ~/.claude/skills/absolute-deflake/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/maddhruv/absolute.git && mkdir -p ~/.claude/skills && cp -r absolute/skills/absolute-deflake ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

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View source on GitHub ↗License: MIT