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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

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.

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.

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`.

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

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.

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.

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`.

Top performing skills & tiles

Discover more

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

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Pending

tessl/maven-org-jetbrains-kotlinx--kotlinx-serialization-core-jvm

Kotlin multiplatform serialization runtime library core module with JVM target support

DOCS

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Pending

tessl/maven-org-jetbrains-kotlinx--kotlinx-serialization-core-js

Kotlin multiplatform reflectionless serialization library core module for JavaScript platform

DOCS

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Pending

tessl/maven-org-jetbrains-kotlinx--kotlinx-serialization-core

Kotlin multiplatform reflectionless serialization library core API and infrastructure

DOCS

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Pending

tessl/maven-org-jetbrains-kotlinx--kotlinx-datetime-iosx64

A multiplatform Kotlin library for working with date and time, specifically the iOS x64 target variant

DOCS

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Pending

tessl/maven-org-jetbrains-kotlinx--kotlinx-datetime-jvm

A multiplatform Kotlin library for working with date and time with JVM target support.

DOCS

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Pending

tessl/maven-org-jetbrains-kotlinx--kotlinx-coroutines-reactive

Kotlin coroutines integration utilities for Reactive Streams specification providing seamless interoperability between coroutines and reactive programming paradigms

DOCS

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Pending

tessl/maven-org-jetbrains-kotlinx--kotlinx-coroutines-jdk8

Backwards compatibility stub module for kotlinx-coroutines JDK8 integration functionality, merged with core since 1.7.0

DOCS

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Pending

tessl/maven-org-jetbrains-kotlinx--kotlinx-coroutines-core-jvm

JVM-specific implementation of kotlinx.coroutines core library providing coroutine primitives, builders, dispatchers, and synchronization primitives for asynchronous programming in Kotlin.

DOCS

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Pending

tessl/maven-org-jetbrains-kotlinx--kotlinx-coroutines-core-iosx64

Kotlin coroutines library providing comprehensive asynchronous programming support with structured concurrency for iOS x64 platforms

DOCS

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Pending

tessl/maven-org-jetbrains-kotlinx--kotlinx-coroutines-core

Coroutines support libraries for Kotlin providing structured concurrency primitives, Flow API for reactive streams, channels for communication, and synchronization utilities across all Kotlin platforms

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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From our partners

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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