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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.

100%

hashicorp/agent-skills

run-acceptance-tests

Guide for running acceptance tests for a Terraform provider. Use this when asked to run an acceptance test or to run a test with the prefix `TestAcc`.

92%

openai/skills

linear

Manage issues, projects & team workflows in Linear. Use when the user wants to read, create or updates tickets in Linear.

96%

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.

100%

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.

100%

hashicorp/agent-skills

run-acceptance-tests

Guide for running acceptance tests for a Terraform provider. Use this when asked to run an acceptance test or to run a test with the prefix `TestAcc`.

92%

openai/skills

linear

Manage issues, projects & team workflows in Linear. Use when the user wants to read, create or updates tickets in Linear.

96%

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.

100%

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.

Top performing skills & tiles

Discover more

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

97%

↑ 1.04x

nicholasjackson/terraform-plugin-framework

Comprehensive documentation and best practices for building Terraform providers with terraform-plugin-framework (v1.17.0). Covers providers, resources, schemas, types, validators, testing, and common pitfalls.

DOCS · RULES

97%

↓ 0.98x

nicholasjackson/golang-opa-rego-language

Rego is the declarative policy language used by Open Policy Agent (OPA) for writing and enforcing policies across cloud-native stacks, featuring data-driven rules, comprehensions, and 200+ built-in functions for infrastructure, security, and compliance automation.

DOCS

97%

↑ 1.12x

tessl/golang-github-com-onsi-ginkgo-v2

A mature testing framework for Go designed to help you write expressive specs

DOCS

93%

↑ 1.13x

tessl/golang-github-com-prometheus--client-model

Data model artifacts for Prometheus

DOCS

81%

↑ 1.12x

tessl/golang-gorm-io--gorm

Full-featured ORM library for Golang with associations, hooks, transactions, migrations, and developer-friendly chainable API

DOCS

65%

↑ 1.14x

tessl/golang-github-com-google-go-github

Go client library for accessing the GitHub API v3

DOCS

—

tessl/golang-github-com-pulumi-pulumi-aws-sdk-v7

A Pulumi provider SDK for creating and managing Amazon Web Services (AWS) cloud resources in Go, providing strongly-typed resource classes and data sources for all major AWS services.

DOCS

—

tessl/golang-k8s-io--client-go

Official Go client library for Kubernetes API - typed clients, controllers, and cluster interaction tools

DOCS

—

tessl/golang-github-com--aws--aws-sdk-go-v2

AWS SDK for Go v2 with 130+ service clients, Request/Send pattern, and context support.

DOCS

—

tessl/golang-github-com-go-co-op-gocron-v2

A Golang job scheduling library that lets you run Go functions at pre-determined intervals using cron expressions, fixed durations, daily, weekly, monthly, or one-time schedules with support for distributed deployments.

DOCS

—

tessl/golang-github-com-shopspring--decimal

Arbitrary-precision fixed-point decimal numbers for Go, avoiding floating-point precision issues with support for arithmetic, rounding, serialization, and database integration.

DOCS

—

tessl/golang-github-com--graphql-go--graphql

Complete GraphQL implementation in Go with schema definition, query execution, and validation.

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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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.

90%

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

93%

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

84%

↑ 1.78x

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

86%

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

88%

↑ 1.27x

pubnub/pubnub-app-developer

Build real-time applications with PubNub pub/sub messaging

SKILLS

93%

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

69%

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