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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

postgres

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

projectbluefin/dakota

subagent-driven-development

Use when executing implementation plans with independent tasks in the current session

anthropics/skills

pdf

Use this skill whenever the user wants to do anything with PDF files. This includes reading or extracting text/tables from PDFs, combining or merging multiple PDFs into one, splitting PDFs apart, rotating pages, adding watermarks, creating new PDFs, filling PDF forms, encrypting/decrypting PDFs, extracting images, and OCR on scanned PDFs to make them searchable. If the user mentions a .pdf file or asks to produce one, use this skill.

anthropics/skills

frontend-design

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.

planetscale/database-skills

postgres

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

projectbluefin/dakota

subagent-driven-development

Use when executing implementation plans with independent tasks in the current session

anthropics/skills

pdf

Use this skill whenever the user wants to do anything with PDF files. This includes reading or extracting text/tables from PDFs, combining or merging multiple PDFs into one, splitting PDFs apart, rotating pages, adding watermarks, creating new PDFs, filling PDF forms, encrypting/decrypting PDFs, extracting images, and OCR on scanned PDFs to make them searchable. If the user mentions a .pdf file or asks to produce one, use this skill.

anthropics/skills

frontend-design

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.

Top performing skills & tiles

Discover more

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

auth0/agent-skills

auth0-vue

Use when adding authentication to Vue.js 3 applications (login, logout, user sessions, protected routes) - integrates @auth0/auth0-vue SDK for SPAs with Vite or Vue CLI

SKILL

auth0/agent-skills

auth0-angular

Use when adding authentication to Angular applications with route guards and HTTP interceptors - integrates @auth0/auth0-angular SDK for SPAs

SKILL

auth0/agent-skills

auth0-nextjs

Use when adding authentication to Next.js applications with both server and client-side auth - supports App Router and Pages Router with @auth0/nextjs-auth0 SDK

SKILL

auth0/agent-skills

auth0-nuxt

Use when implementing Auth0 authentication in Nuxt 3/4 applications, configuring session management, protecting routes with middleware, or integrating API access tokens - provides setup patterns, composable usage, and security best practices for the @auth0/auth0-nuxt SDK

SKILL

workos/skills

workos

Identify which WorkOS reference to load based on the user's task — covers AuthKit, backend SDKs, SSO, RBAC, migrations, management, and all API references.

SKILL

AgriciDaniel/claude-ads

ads-creative

Cross-platform creative quality audit covering ad copy, video, image, and format diversity across all platforms. Detects creative fatigue, evaluates platform-native compliance, and provides production priorities. Use when user says "creative audit", "ad creative", "creative fatigue", "ad copy", "ad design", or "creative review".

SKILL

AgriciDaniel/claude-ads

ads-meta

Meta Ads deep analysis covering Facebook and Instagram advertising. Evaluates 46 checks across Pixel/CAPI health, creative diversity and fatigue, account structure, and audience targeting. Includes Advantage+ assessment. Use when user says "Meta Ads", "Facebook Ads", "Instagram Ads", "Advantage+", or "Meta campaign".

SKILL

shousper/claude-kit

code-standards

Load language-specific coding standards before editing Go, Rust, Python, or Tailwind CSS files

SKILL

shousper/claude-kit

tdd

Use when implementing any feature or bugfix, before writing implementation code

SKILL

shousper/claude-kit

create-pr

Use when creating a pull request — defaults to draft PRs, uses repo PR template if available, supports "ready for review" override

SKILL

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.

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