marchatton/agent-skills

Curated and custom built skills, commands and hooks for level up your AI coding.

This repository also configures its own agents. See what agent-skills tells them →

5Stars on the repository
100Mods indexed here, across every type
6mo agoLast push, which is what freshness is scored on
MITLicence, which decides whether bodies are shown

marchatton/agent-skills

Skill Claude CodeCodex

Use this agent when you need to review Python code changes with an extremely high quality bar. This agent should be invoked after implementing features, modifying existing code, or creating new Python modules. The agent applies Kieran's strict Python conventions and taste preferences to ensure code meets exceptional…

not rated 5 6mo ago A 65 tokens original MIT

marchatton/agent-skills

Skill Claude CodeCodex

Use this agent when you need to review TypeScript code changes with an extremely high quality bar. This agent should be invoked after implementing features, modifying existing code, or creating new TypeScript components. The agent applies Kieran's strict TypeScript conventions and taste preferences to ensure code…

not rated 5 6mo ago A 69 tokens original MIT

marchatton/agent-skills

Skill Claude CodeCodex

Use this agent when you need to analyze code for design patterns, anti-patterns, naming conventions, and code duplication. This agent excels at identifying architectural patterns, detecting code smells, and ensuring consistency across the codebase.

not rated 5 6mo ago A 50 tokens original MIT

performance-oracle

76

marchatton/agent-skills

Skill Claude CodeCodex

Use this agent when you need to analyze code for performance issues, optimize algorithms, identify bottlenecks, or ensure scalability. This includes reviewing database queries, memory usage, caching strategies, and overall system performance. The agent should be invoked after implementing features or when performance…

not rated 5 6mo ago A 63 tokens original MIT

marchatton/agent-skills

Skill Codex

Perform language and framework specific security best-practice reviews and suggest improvements. Trigger only when the user explicitly requests security best practices guidance, a security review/report, or secure-by-default coding help. Trigger only for supported languages (python, javascript/typescript, go). Do not…

not rated 5 6mo ago A 73 tokens copy · 100% MIT

security-sentinel

78

marchatton/agent-skills

Skill Claude CodeCodex

Use this agent when you need to perform security audits, vulnerability assessments, or security reviews of code. This includes checking for common security vulnerabilities, validating input handling, reviewing authentication/authorization implementations, scanning for hardcoded secrets, and ensuring OWASP compliance.

not rated 5 6mo ago A 54 tokens original MIT

marchatton/agent-skills

Skill Codex

Repository-grounded threat modeling that enumerates trust boundaries, assets, attacker capabilities, abuse paths, and mitigations, and writes a concise Markdown threat model. Trigger only when the user explicitly asks to threat model a codebase or path, enumerate threats/abuse paths, or perform AppSec threat modeling.…

not rated 5 6mo ago A 82 tokens copy · 100% MIT

test-browser

80

marchatton/agent-skills

Skill Claude Code

This skill should be used when running browser tests on pages affected by the current PR or branch.

not rated 5 6mo ago A 22 tokens original MIT

wf-review

81

marchatton/agent-skills

Skill Claude CodeCodex

This skill should only be used when the user uses the word workflow and asks to review changes (select mode = light, light-plus, heavy) with verification and context handoff/pickup to avoid context rot.

not rated 5 6mo ago A 46 tokens original MIT

changelog

82

marchatton/agent-skills

Skill Claude CodeCodex

This skill should be used when creating changelogs for recent merges to main branch.

not rated 5 6mo ago A 20 tokens copy · 91% MIT

demo-runbook

83

marchatton/agent-skills

Skill Claude CodeCodex

This skill should be used when a user needs a demo package that starts with a live demo (not slides) and produces both a demo script and a navigable single-file HTML runbook, including caveats, respectful competitive comparison, and LLM architecture details (RAG, evals, observability).

not rated 5 6mo ago A 65 tokens original MIT

marchatton/agent-skills

Skill Claude CodeCodex

Use this agent when a PR touches production data, migrations, or any behavior that could silently discard or duplicate records. Produces a concrete pre/post-deploy checklist with SQL verification queries, rollback procedures, and monitoring plans. Essential for risky data changes where you need a Go/No-Go decision.

not rated 5 6mo ago A 64 tokens original MIT

wf-release

85

marchatton/agent-skills

Skill Claude CodeCodex

This skill should only be used when the user uses the word workflow and asks to release or ship changes with a release checklist, verification, and clean handoff/pickup boundaries.

not rated 5 6mo ago A 39 tokens original MIT

compound-docs

86

marchatton/agent-skills

Skill Claude CodeCodex

Capture solved problems as categorized documentation with YAML frontmatter for fast lookup. Use when a non-trivial problem is solved and worth reusing.

not rated 5 6mo ago A 32 tokens original MIT

marchatton/agent-skills

Skill Claude CodeCodex

Build a custom browser-based annotation interface tailored to your data for reviewing LLM traces and collecting structured feedback. Use when you need to build an annotation tool, review traces, or collect human labels.

not rated 5 6mo ago A 43 tokens copy · 100% MIT

error-analysis

88

marchatton/agent-skills

Skill Claude CodeCodex

Help the user systematically identify and categorize failure modes in an LLM pipeline by reading traces. Use when starting a new eval project, after significant pipeline changes (new features, model switches, prompt rewrites), when production metrics drop, or after incidents.

not rated 5 6mo ago A 53 tokens copy · 100% MIT

eval-audit

89

marchatton/agent-skills

Skill Claude CodeCodex

Audit an LLM eval pipeline and surface problems: missing error analysis, unvalidated judges, vanity metrics, etc. Use when inheriting an eval system, when unsure whether evals are trustworthy, or as a starting point when no eval infrastructure exists. Do NOT use when the goal is to build a new evaluator from scratch…

not rated 5 6mo ago A 85 tokens copy · 100% MIT

evaluate-rag

90

marchatton/agent-skills

Skill Claude CodeCodex

Guides evaluation of RAG pipeline retrieval and generation quality. Use when evaluating a retrieval-augmented generation system, measuring retrieval quality, assessing generation faithfulness or relevance, generating synthetic QA pairs for retrieval testing, or optimizing chunking strategies.

not rated 5 6mo ago A 52 tokens copy · 100% MIT

marchatton/agent-skills

Skill Claude CodeCodex

Create diverse synthetic test inputs for LLM pipeline evaluation using dimension-based tuple generation. Use when bootstrapping an eval dataset, when real user data is sparse, or when stress-testing specific failure hypotheses. Do NOT use when you already have 100+ representative real traces (use stratified sampling…

not rated 5 6mo ago A 74 tokens copy · 100% MIT

validate-evaluator

92

marchatton/agent-skills

Skill Claude CodeCodex

Calibrate an LLM judge against human labels using data splits, TPR/TNR, and bias correction. Use after writing a judge prompt (write-judge-prompt) when you need to verify alignment before trusting its outputs. Do NOT use for code-based evaluators (those are deterministic; test with standard unit tests).

not rated 5 6mo ago A 69 tokens copy · 94% MIT

write-judge-prompt

93

marchatton/agent-skills

Skill Claude CodeCodex

Design LLM-as-Judge evaluators for subjective criteria that code-based checks cannot handle. Use when a failure mode requires interpretation (tone, faithfulness, relevance, completeness). Do NOT use when the failure mode can be checked with code (regex, schema validation, execution tests). Do NOT use when you need to…

not rated 5 6mo ago A 82 tokens copy · 100% MIT

agent-native-audit

94

marchatton/agent-skills

Skill Claude Code

Comprehensive agent-native architecture audit with scored principles and multi-slice review. Use for system-wide health checks or periodic audits.

not rated 5 6mo ago A 30 tokens original MIT

create-agent-skills

95

marchatton/agent-skills

Skill Claude CodeCodex

Expert guidance for creating, writing, and refining Claude Code Skills. Use when working with SKILL.md files, authoring new skills, improving existing skills, or understanding skill structure and best practices.

not rated 5 6mo ago A 44 tokens copy · 86% MIT

heal-skill

96

marchatton/agent-skills

Skill Claude Code

This skill should be used when fixing incorrect SKILL.md files with outdated instructions or APIs.

not rated 5 6mo ago A 22 tokens original MIT

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