ClaudSkills / Engineering / engineering-misc

Debug Failures

Q: What is a Claude Code skill and how does the Debug Failures skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Debug Failures is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Engineering · Sub-category: engineering-misc · Last updated: 2026-09-28

type:debug

See why a Go/Ginkgo Biloba spec failed or flaked — the on-failure artifacts (DOM outline + screenshots + poll trajectory of the timed-out read + the visual-regression diagnosis with its .actual.png/.diff.png, the "never settled" warning an update run prints + the detached-node "matched then stopped matching" signal + the occluded-click diagnosis naming what covered the target), how Biloba auto-adapts to humans vs CI vs AI agents, the env vars and config knobs that surface them (BILOBA_SCREENSHOTS_DIR, BILOBA_SCREENSHOT_BASELINES_DIR, BILOBA_UPDATE_SCREENSHOTS, BILOBA_INLINE_SCREENSHOTS, BILOBA_OUTLINE_MAX, BILOBA_INTERACTIVE, BilobaConfig*), attaching app/store state to a failure, headless quirks (stale innerText, unscheduled requestAnimationFrame), and using b.Outline()/b.A11yOutline() to understand why a selector did not match. Use when a browser spec is failing or flaky and you need visibility, or to configure failure output for CI/agents. For *preventing* flakes (single-shot reads, avoiding b.Immediate(), optimistic-UI) see this plugin's flaky-specs skill.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Reading artifacts after a spec failed. To prevent flakes → flaky-specs. Docs: <https://onsi.github.io/biloba/#failure-artifacts-humans-ci-and-agents>. Sibling skills are named here without a prefix; invoke one with the same plugin prefix you loaded this skill under.

What this skill does

Debug Failures is a community-contributed Claude Code skill in the engineering-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/debug-failures/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when a browser spec is failing or flaky and you need visibility, or to configure failure output for CI/agents. For *preventing* flakes (single-shot reads, avoiding b.

Who uses this skill

The Debug Failures Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 196,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/debug-failures
curl -L https://claudskills.com/skills/debug-failures/SKILL.md \
  -o ~/.claude/skills/debug-failures/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/debug-failures/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/debug-failures/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\debug-failures\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Debug Failures Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/debug-failures/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Debug Failures skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Debug Failures skill?

Use Debug Failures when your Claude Code task falls under the Engineering category — specifically in the engineering misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Debug Failures" or describe the task and let Claude pick). Browse related skills at /category/engineering/.

What is a Claude Code skill and how does the Debug Failures skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Debug Failures is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/onsi/biloba/blob/HEAD/plugins/biloba-go/skills/debug-failures/SKILL.md
License: MIT
Author: onsi
Website: https://onsi.github.io/biloba/

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

onsi. (2026). Debug Failures [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/debug-failures/

BibTeX

@misc{debug-failures-2026,
  author    = {onsi},
  title     = {Debug Failures [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/debug-failures/}
}

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Badge

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Security scan

Grade A · scanned 2026-09-28 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/debug-failures/#security)

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Browse all Engineering skills → Top 100 skills

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