Agent skill

Error Detective

by aiskillstore in aiskillstore/marketplace

Search logs and codebases for error patterns, stack traces, and anomalies.

No licenceAuto-check passedDevelopment

Install Error Detective

skills CLI
$ npx skills add aiskillstore/marketplace --skill error-detective -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install aiskillstore/marketplace error-detective --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/aiskillstore/marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/sickn33/error-detective .claude/skills/error-detective && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
error-detective
GitHub stars
430
Used in
8 other repos
Token cost
~499 tokens
SKILL.md length
234 words
Files
2
Skills in repo
1,108
Repo updated
First seen
Licence
None found

At a glance

Search logs and codebases for error patterns, stack traces, and anomalies.

  • Works in 5 steps: Start with error symptoms, work backward… → Look for patterns across time windows → Correlate errors with deployments/changes → …
  • Tasks that involve Debugging
  • SKILL.md covers Use this skill when, Do not use this skill when, Instructions and Focus Areas, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Error Detective is an agent skill from aiskillstore/marketplace. Search logs and codebases for error patterns, stack traces, and anomalies. Correlates errors across systems and identifies root causes.

Its SKILL.md is about 500 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `skill-report.json`).

It sits in Development, covering Debugging and Root cause analysis. The repository describes itself as: Security-audited skills for Claude, Codex & Claude Code. One-click install, quality verified.

When your agent uses it

  • Tasks that involve Debugging
  • Tasks that involve Root cause analysis

Example prompts

  • “/error-detective”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Start with error symptoms, work backward to cause
  2. Look for patterns across time windows
  3. Correlate errors with deployments/changes
  4. Check for cascading failures
  5. Identify error rate changes and spikes

What it can do on your machine

Read from SKILL.md and the folder at commit ad8daf7. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Error Detective loads about 499 tokens when it runs. Until then it costs about 38 tokens; SKILL.md has 234 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~38
When it runs · the whole SKILL.md, loaded when a task matches
~499

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 234 words (~499 tokens).

“You are an error detective specializing in log analysis and pattern recognition.”

— opening of SKILL.md by aiskillstore
name
error-detective
risk
safe
source
community
date_added
2026-02-27

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file in skills/sickn33/error-detective of aiskillstore/marketplace.

  • SKILL.md
  • skill-report.json

Open the folder on GitHubat commit ad8daf7

Used in 8 other repositories

We found 23 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 8 other GitHub owners. This page covers the copy in aiskillstore/marketplace, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Error Detective next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Error Detective compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Error Detective this skillaiskillstore/marketplace4308 repos~499Automated safety check: PassNone
OpenLogi macOS Permissions TriageAprilNEA/OpenLogi23k—~2.5kAutomated safety check: NotesApache-2.0
Bug Finder for daisyUIsaadeghi/daisyui43k—~2.3kAutomated safety check: PassMIT
Root Cause Debugginggarrytan/gstack136k—~1.4kAutomated safety check: PassMIT
Graph-Based Bug Tracingtirth8205/code-review-graph32k1 repos~287Automated safety check: PassMIT
Systematic DebuggingChrisWiles/claude-code-showcase6.1k3 repos~1.2kAutomated safety check: PassNone

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All 1,108 skills in this repo
  • Code Stats

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  • Doc Scanner

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  • Investigating Codebases

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Categories

Questions about Error Detective

What does Error Detective do?

Search logs and codebases for error patterns, stack traces, and anomalies. Error Detective is an agent skill from aiskillstore/marketplace. Search logs and codebases for error patterns, stack traces, and anomalies.

When should I use Error Detective?

Error Detective fits situations like: tasks that involve Debugging; tasks that involve Root cause analysis.

How do I install Error Detective in Claude Code?

Run `npx skills add aiskillstore/marketplace --skill error-detective -a claude-code`. Or copy the skill folder (skills/sickn33/error-detective in aiskillstore/marketplace) into .claude/skills/error-detective in your project. Claude Code loads it when a task matches its description.

How do I install Error Detective in Codex?

Run `npx skills add aiskillstore/marketplace --skill error-detective -a codex`. Or copy the skill folder (skills/sickn33/error-detective in aiskillstore/marketplace) into .agents/skills/error-detective in your project. Codex loads it when a task matches its description.

Can I use Error Detective in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aiskillstore/marketplace --skill error-detective -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/error-detective, .gemini/skills/error-detective, .github/skills/error-detective and .opencode/skills/error-detective in your project.

What does Error Detective need to run?

SKILL.md names no scripts, command-line tools or credentials: Error Detective is instructions for the agent only.

Does Error Detective access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Error Detective safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Error Detective use?

No licence was found for Error Detective or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Error Detective use?

About 499 tokens (SKILL.md is roughly 2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Error Detective?

Skills that share tags, products or a category with Error Detective: OpenLogi macOS Permissions Triage (AprilNEA/OpenLogi, 23k stars), Bug Finder for daisyUI (saadeghi/daisyui, 43k stars), Root Cause Debugging (garrytan/gstack, 136k stars) and Graph-Based Bug Tracing (tirth8205/code-review-graph, 32k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Error Detective?

aiskillstore (a GitHub organization) maintains it in aiskillstore/marketplace, which has 430 GitHub stars. The repository holds 1,108 skills in this directory. The repository was last updated on October 7, 2026.

Source: aiskillstore/marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.