Skills Registry
Find skills that make
AI agents work correctly.
Skills are instructions that tell AI coding agents how to use your library, API, or workflow correctly. Evaluated, secured, versioned, and discoverable.
npx tessl search
Have a skill? Optimize it with Tessl →
Featured skills
View more91
Agent success vs baseline
87%
Does it follow best practices?
Impact
95%
1.37xAverage score across 5 eval scenarios
Passed
No known issues
Reviewed:
Version: 0.0.2
openai/skills
notion-knowledge-capture
Capture conversations and decisions into structured Notion pages; use when turning chats/notes into wiki entries, how-tos, decisions, or FAQs with proper linking.
77
71%
Does it follow best practices?
Impact
Pending
Average score across 0 eval scenarios
Passed
No known issues
Reviewed:
Version: 69c0b1a
anthropics/skills
webapp-testing
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.
89
Agent success vs baseline
87%
Does it follow best practices?
Impact
91%
1.15xAverage score across 3 eval scenarios
Passed
No known issues
Reviewed:
Version: 0.0.1
secondsky/claude-skills
systematic-debugging
Four-phase debugging framework that ensures root cause investigation before attempting fixes. Never jump to solutions. Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.
69
62%
Does it follow best practices?
Impact
Pending
Average score across 0 eval scenarios
Advisory
Suggest reviewing before use
Reviewed:
Version: aac2078
openai/skills
linear
Manage issues, projects & team workflows in Linear. Use when the user wants to read, create or updates tickets in Linear.
Our partners
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WHY TESSL?
Your skill gets optimized,
not just listed.
Everything you just saw — scores, uplift numbers, partner skills — that's what your skill gets when you optimize it with Tessl. A GitHub README tells developers it exists. Tessl tells them it works.
Quality
How well your skill is constructed against best practices. Runs on every publish, before anyone sees your skill.
Impact
The measurable change in agent behaviour attributable to your skill. Proof, not claims.
Security
Automated vulnerability scanning powered by Snyk. Developers see exactly what was found.
Versioned
Every publish is versioned. Developers pin, update, and find your skill like a package.
Browse by category
View all categoriesFind exactly what you need, organized by use case.
Testing & QA
Skills for writing, running, and debugging tests across unit, integration, and E2E.
Security & Compliance
Harden code, audit dependencies, and enforce policy across your stack.
Documentation Generation
Auto-generate READMEs, API docs, changelogs, and inline comments.
Debugging & Error Handling
Diagnose failures, trace errors, and write resilient error-handling patterns.
API Development
Design, build, and document REST and GraphQL APIs with consistent patterns.
Web Design
UI components, layouts, and design-to-code workflows for the web.
Database Management
Schema design, query optimisation, and migration patterns.
Infrastructure
IaC, cloud provisioning, and deployment pipeline skills for managing infrastructure.
Machine Learning & AI
Model integration, prompt engineering, and data pipeline patterns.
DevOps
CI/CD, containerisation, monitoring, and incident response workflows.
Optimize your context
Make your skill work
correctly, provably.
Submit your skill and Tessl runs evals automatically. You get a score, actionable improvements, and a page in the registry. Developers and their agents start finding you immediately.
01
Submit your skill
Point Tessl at your GitHub repo or paste your skill content directly.
02
Get your score
Evals run automatically. You see exactly where your skill works, where it doesn't, and what to fix.
03
Improve and republish
Act on the suggestions, push an update, and watch your score move. Every version is tracked.