The package manager for agent skills and context

Versioned, evaluated skills and context for agentic software development

npx tessl search

Evaluate skill

Featured skills

Install our featured skills or any skill from GitHub with Tessl package manager.

planetscale/database-skills

postgres

PostgreSQL best practices, query optimization, connection troubleshooting, and performance improvement. Load when working with Postgres databases.

elevenlabs/skills

speech-to-text

Transcribe audio to text using ElevenLabs Scribe v2. Use when converting audio/video to text, generating subtitles, transcribing meetings, or processing spoken content.

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.

a-pavithraa/springboot-skills-marketplace

java25-springboot4-reviewer

Comprehensive code review for Java 25 and Spring Boot 4 apps. Use when reviewing, checking, auditing, or analyzing Java/Spring Boot code (files, modules, PRs, or full codebases) for migration risks, Spring Boot 4 best practices, JSpecify null-safety, security vulnerabilities, performance bottlenecks, data access pitfalls, architecture boundaries (DDD/Hexagonal/Spring Modulith), or modern Java 25 usage.

planetscale/database-skills

postgres

PostgreSQL best practices, query optimization, connection troubleshooting, and performance improvement. Load when working with Postgres databases.

elevenlabs/skills

speech-to-text

Transcribe audio to text using ElevenLabs Scribe v2. Use when converting audio/video to text, generating subtitles, transcribing meetings, or processing spoken content.

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.

a-pavithraa/springboot-skills-marketplace

java25-springboot4-reviewer

Top performing skills & tiles

Discover more

Tessl analyzes skills and tiles for their impact on agent success.

tessl/npm-wrap-ansi

Wordwrap a string with ANSI escape codes

DOCS

tessl/npm-slidev--cli

Modern presentation framework and CLI tool that transforms Markdown files into interactive, web-based slide presentations with built-in development server, export capabilities, and Vue.js integration

DOCS

tessl/npm-rc-progress

Progress UI component for React providing customizable line and circle progress bars

DOCS

tessl/npm-koa-route

Uber simple route middleware for Koa.js applications with path parameter support

DOCS

tessl/npm-glob-to-regexp

Convert globs to regular expressions

DOCS

tessl/npm-crypto-browserify

Browser-compatible implementation of Node.js crypto module providing cryptographic operations in web environments.

DOCS

tessl/npm-cronstrue

Convert cron expressions into human readable descriptions

DOCS

tessl/npm-babel-plugin-transform-es2015-sticky-regex

Babel plugin that transforms ES2015 sticky regex literals to ES5-compatible RegExp constructor calls

DOCS

tessl/npm-jest-expect-message

Add custom message to Jest expects

DOCS

tessl/npm-bitcoinjs-lib

Client-side Bitcoin JavaScript library for node.js and browsers with comprehensive Bitcoin protocol support

DOCS

Can't find what you're looking for? Evaluate a missing skill, or if you're looking for agent context for an open source dependency, request a tile.

Browse by category

View all categories

Find exactly what you need, organized by use case.

Testing & QA

Security & compliance

Documentation generation

Debugging & error handling

API development

Web design

Database management

From our partners

Become a partner

Enterprise-ready skills from trusted publishers.

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.

SKILL

elevenlabs/skills

text-to-speech

Convert text to speech using ElevenLabs voice AI. Use when generating audio from text, creating voiceovers, building voice apps, or synthesizing speech in 70+ languages.

SKILL

cisco/software-security

A software security skill that integrates with Project CodeGuard to help AI coding agents write secure code and prevent common vulnerabilities. Use this skill when writing, reviewing, or modifying code to ensure secure-by-default practices are followed.

SKILLS

hashicorp/agent-skills

terraform-stacks

Comprehensive guide for working with HashiCorp Terraform Stacks. Use when creating, modifying, or validating Terraform Stack configurations (.tfcomponent.hcl, .tfdeploy.hcl files), working with stack components and deployments from local modules, public registry, or private registry sources, managing multi-region or multi-environment infrastructure, or troubleshooting Terraform Stacks syntax and structure.

SKILL

pubnub/pubnub-app-developer

Build real-time applications with PubNub pub/sub messaging

SKILLS

anthropics/skills

skill-creator

Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.

SKILL

huggingface/skills

hugging-face-tool-builder

Use this skill when the user wants to build tool/scripts or achieve a task where using data from the Hugging Face API would help. This is especially useful when chaining or combining API calls or the task will be repeated/automated. This Skill creates a reusable script to fetch, enrich or process data.

SKILL