Topic · Automation and Agents
Skill Authoring skills for Claude Code and Codex
Skills for writing, testing and maintaining other skills: Anthropic's skill-creator, Sentry's skill-writer, obra's writing-skills, optimizers for activation and clarity, evaluators that run a skill against baselines, miners that turn session history into new skills, and finders that discover and install skills from public libraries. They help you build SKILL.md folders that trigger when they should.
Highest-scoring skill authoring skills in the October 22, 2026 snapshot: agent-skills-creator from mblode/agent-skills (91/100), skill-writer from getsentry/skills (86/100) and skill-creator from anthropics/skills (83/100). Scores come from the Suede Skill Check.
- 37 listed skills
- 24 repositories
- 14 with full pages
11 from official publishers. 10 bundle scripts. 4 connect to an outside service. Listed in AI Agents and LLM Engineering (37).
All 37 skill authoring skills
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| Skill | Repository | What it does |
|---|---|---|
| agent-skills-creator 91/100 · A | mblode/agent-skills | Creates and improves portable Agent Skills using a validator and routing scenarios, with evidence-based decisions to keep, cut, merge, or retire skills. |
| find-skills 81/100 · B | vercel-labs/skills | Helps users discover and install agent skills when they ask how to do something or look for a skill that extends capabilities. |
| skill-builder 81/100 · B | yusufkaraaslan/Skill_Seekers | Detects source types automatically and builds AI skills with Skill Seekers from documentation, repos, PDFs, videos, or other knowledge sources. |
| skill-creator 83/100 · B | anthropics/skills | Guides creating new skills, improving existing ones, running evals, benchmarking skill performance with variance analysis, and optimizing a skill's description for better triggering. |
| skill-creator 79/100 · C | swarmclawai/swarmclaw | Creates, edits, improves, and audits skills for SwarmClaw agents, including restructuring a skill directory or tidying an existing SKILL.md file. |
| skill-generalizer 74/100 · C | hqhq1025/skill-optimizer | Turns local or personal Agent Skills into publishable ones by removing private paths, personal habits, credentials, internal hosts, and user-specific context. |
| skill-miner 76/100 · C | hqhq1025/skill-optimizer | Mines coding-agent session history, archived transcripts, memories, and repeated local work to discover recurring workflows that should become new Agent Skills. |
| skill-optimizer 74/100 · C | mcollina/skills | Optimizes AI skills for activation, clarity, and cross-model reliability, including diagnosing weak skill uptake, shrinking context cost, and setting benchmark and release gates. |
| skill-personalizer 74/100 · C | hqhq1025/skill-optimizer | Audits and adapts new, downloaded, forked, or community Agent Skills to the user's tools, habits, directories, and workflows, especially when triggers feel wrong. |
| skill-writer 86/100 · B | getsentry/skills | Creates, synthesizes, and iteratively improves agent skills following the Agent Skills specification, including source capture, precision passes, authoring, registration, and validation. |
| test-skill 78/100 · C | NeoLabHQ/context-engineering-kit | Tests skills before deployment by running a baseline without the skill, writing fixes for failures, and iterating to close loopholes under pressure. |
| utility-pm-skill-iterate 83/100 · B | product-on-purpose/pm-skills | Applies targeted improvements to an existing pm-skills skill based on feedback or validation reports, previews changes, writes on confirmation, and suggests a version bump. |
| utility-pm-skill-validate 83/100 · B | product-on-purpose/pm-skills | Audits an existing pm-skills skill against structural conventions and quality criteria, producing a validation report with pass/fail checks, severity-graded findings, and recommendations. |
| utility-update-pm-skills 83/100 · B | product-on-purpose/pm-skills | Compares the locally installed pm-skills version against the latest public release and updates local files with conflict-aware overwrite-or-skip options, producing an update report. |
| agent-platform-skill-registry 79/100 · C | google/skills | Interact with the Gemini Enterprise Agent Platform Skill Registry to create and search for available skills. Use this skill to enable agents to… |
| agent-skill-stack 84/100 · B | github/awesome-copilot | Find, evaluate, and assemble the smallest compatible set of AI Agent Skills for an end-to-end natural-language goal. Use when a user wants Skills… |
| apply-anthropic-skill-best-practices 62/100 · D | NeoLabHQ/context-engineering-kit | Comprehensive guide for skill development based on Anthropic's official best practices - use for complex skills requiring detailed structure |
| autoskill 89/100 · B | K-Dense-AI/claude-scientific-skills | Analyzes user-requested Screenpipe history windows to detect repeated research workflows, match existing scientific skills, and stage new skill… |
| birdview-compatibility 73/100 · C | Qiuner/birdview | Audit the installed AI skill environment for duplicate installations, broad triggers and possible instruction conflicts. Use only when the user… |
| context-engineering-collection 76/100 · C | muratcankoylan/Agent-Skills-for-Context-Engineering | A comprehensive collection of Agent Skills for context engineering, harness engineering, multi-agent architectures, and production agent systems… |
| create-skill 67/100 · D | NeoLabHQ/context-engineering-kit | Guide for creating effective skills. This command should be used when users want to create a new skill (or update an existing skill) that extends… |
| crystallize 71/100 · C | avelikiy/great_cto | Distils repeating patterns from session logs and lessons.md into draft skill files. Run after ≥10 sessions to extract durable knowledge. Output… |
| find-skill 78/100 · C | gooseworks-ai/goose-skills | Find and install skills from the Orthogonal skill library. Use when you need capabilities you don't have, want to discover available skills, or need… |
| microsoft-skill-creator 82/100 · B | github/awesome-copilot | Create agent skills for Microsoft technologies using Learn MCP tools. Use when users want to create a skill that teaches agents about any Microsoft… |
| nvidia-skill-finder 85/100 · B | NVIDIA/skills | Use for NVIDIA-related requests where an NVIDIA skill might help, even if the user did not ask for a skill. Trigger on NVIDIA products, hardware… |
| pm-skill-creator 79/100 · C | deanpeters/Product-Manager-Skills | Design a new PM skill through guided conversation. Use when you have raw content or an idea and want to shape it into a compliant skill. |
| skill-authoring-workflow 79/100 · C | deanpeters/Product-Manager-Skills | Turn raw PM content into a compliant, publish-ready skill. Use when creating or updating a repo skill without breaking standards. |
| skill-card-generator 89/100 · B | NVIDIA/skills | Use only to generate or update a governance skill card for a specified existing agent skill directory. Do not use for explaining, listing… |
| skill-creator 84/100 · B | apollographql/skills | Guide for creating effective skills for Apollo GraphQL and GraphQL development. Use this skill when: (1) users want to create a new skill, (2) users… |
| skill-creator 78/100 · C | gooseworks-ai/goose-skills | Create, structure, and package agent skills. Use when designing new skills, updating existing skills, or helping users build skills with scripts… |
| skill-evaluator 84/100 · B | HeshamFS/materials-simulation-skills | Rigorously evaluate an Agent Skill end-to-end across ANY coding-agent CLI — verify its scripts emit the documented numbers (deterministic checks)… |
| skill-improver 93/100 · A | trailofbits/skills | Runs an autonomous review-and-fix improvement loop over a Claude Code skill until a review comes back clean, with a cross-round findings ledger… |
| testing-handbook-generator 88/100 · B | trailofbits/skills | Generates Claude Code skills from the Trail of Bits Testing Handbook (appsec.guide), analyzing handbook pages and emitting SKILL.md files with the… |
| utility-pm-skill-auditor 83/100 · B | product-on-purpose/pm-skills | Run a repo-wide cross-cutting governance audit via the pm-skill-auditor sub-agent. Aggregates the enforcing validator suite, re-derives aggregate… |
| utility-pm-skill-builder 75/100 · C | product-on-purpose/pm-skills | Guides contributors from a PM skill idea to a complete Skill Implementation Packet aligned with pm-skills conventions. Runs gap analysis, validates… |
| writing-for-agents 76/100 · C | mattpocock/skills | Writing documents for agents. Use when creating or editing skills, or modifying AGENTS.md or CLAUDE.md. |
| writing-skills 69/100 · D | obra/superpowers | Use when creating new skills, editing existing skills, or verifying skills work before deployment |
How to choose skill authoring skills
Use a creator skill for the first draft and an evaluator for the second pass. skill-creator, skill-writer and agent-skills-creator structure the folder and description; test-skill, skill-evaluator and skill-improver check that it actually changes behavior.
Description wording decides when a skill loads. skill-optimizer and the routing checks in agent-skills-creator focus on that line, which is where most weak skills fail.
Finder skills (find-skills, find-skill, nvidia-skill-finder) install third-party code. Read the SKILL.md and scripts of anything they suggest before you approve the install.
Related topics
Evals and Benchmarks 27Agent Tracing and Observability 41Codex, Cursor and Coding Agents 23Subagents and Multi-Agent Orchestration 40Claude Code Setup and Hooks 31Context Engineering and Agent Memory 31MCP Servers 82
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