The package manager for agent skills and context

Versioned, evaluated skills and context for agentic software development

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Featured skills

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

planetscale/database-skills

vitess

Vitess best practices, query optimization, and connection troubleshooting for PlanetScale Vitess databases. Load when working with Vitess databases, sharding, VSchema configuration, keyspace management, or MySQL scaling issues.

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.

elevenlabs/skills

speech-to-text

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

planetscale/database-skills

mysql

Plan and review MySQL/InnoDB schema, indexing, query tuning, transactions, and operations. Use when creating or modifying MySQL tables, indexes, or queries; diagnosing slow/locking behavior; planning migrations; or troubleshooting replication and connection issues. Load when using a MySQL database.

planetscale/database-skills

vitess

anthropics/skills

webapp-testing

elevenlabs/skills

speech-to-text

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

planetscale/database-skills

mysql

Top performing skills & tiles

Discover more

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

tessl/npm-make-fetch-happen

Opinionated, caching, retrying fetch client for Node.js with enterprise-grade HTTP features

DOCS

tessl/npm-libnpmorg

Programmatic API for managing npm organization memberships and roles

DOCS

tessl/npm-emoji-picker-react

Emoji Picker component for React Applications on the web

DOCS

tessl/npm-tiptap--extension-typography

Typography extension for Tiptap that automatically converts common text input patterns into proper typographic characters.

DOCS

tessl/npm-eslint-config-node

Pluggable ESLint configuration for Node.js that extends ESNext with Node.js-specific safety checks and best practices

DOCS

tessl/npm-lightdash--common

Shared TypeScript library for the Lightdash platform containing common types, utilities, and business logic for analytics workflows

DOCS

tessl/npm-io-ts

TypeScript runtime type system for IO decoding/encoding

DOCS

tessl/npm-ckeditor--ckeditor5-mention

Mention feature for CKEditor 5 providing smart autocompletion functionality for @mentions and #tags.

DOCS

tessl/npm-walletconnect--types

TypeScript type definitions and interfaces for the WalletConnect Protocol v2, enabling type-safe development across the WalletConnect ecosystem

DOCS

tessl/npm-ice--plugin-icestark

Easy integration of icestark micro-frontends framework with icejs applications

DOCS

tessl/npm-storybook--addon-mdx-gfm

GitHub Flavored Markdown support addon for Storybook documentation.

DOCS

tessl/npm-i18next-client

DEPRECATED client-side JavaScript internationalization library with translation, pluralization, and localization 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.

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Enterprise-ready skills from trusted publishers.

webapp-testing

SKILL

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 74+ 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

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

skill-creator

Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, update 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

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