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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.

98%

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.

94%

anthropics/skills

mcp-builder

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

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.

92%

openai/skills

linear

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

98%

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.

94%

anthropics/skills

mcp-builder

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

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.

92%

openai/skills

linear

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

Top performing skills & tiles

Discover more

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

63%

adk-deployment-specialist

Deploy and orchestrate Vertex AI ADK agents using A2A protocol. Manages AgentCard discovery, task submission, Code Execution Sandbox, and Memory Bank. Use when asked to "deploy ADK agent" or "orchestrate agents". Trigger with phrases like 'deploy', 'infrastructure', or 'CI/CD'.

SKILL

63%

thesys-generative-ui

AI-powered generative UI with Thesys - create React components from natural language.

SKILL

63%

seo-keyword-cluster-builder

SEO keyword clustering with topic organization, content hub architecture, internal linking strategies. Use for content strategy, keyword research, pillar page structures, or encountering cluster organization, hub architecture, internal linking errors.

SKILL

63%

salesforce

Query and manage Salesforce orgs via the official Salesforce MCP server or SF CLI.

SKILL

63%

cloudflare-agents

Build AI agents on Cloudflare Workers with MCP integration, tool use, and LLM providers.

SKILL

63%

simplify

Simplify and refine recently modified code for clarity and consistency. Use after writing code to improve readability without changing functionality.

SKILL

63%

spec-miner

Use when understanding legacy or undocumented systems, creating documentation for existing code, or extracting specifications from implementations. Invoke for legacy analysis, code archaeology, undocumented features.

SKILL

63%

vueuse-functions

Apply VueUse composables where appropriate to build concise, maintainable Vue.js / Nuxt features.

SKILL

63%

capa-officer

Senior CAPA Officer specialist for managing Corrective and Preventive Actions within Quality Management Systems. Provides CAPA process management, root cause analysis, effectiveness verification, and continuous improvement coordination. Use for CAPA investigations, corrective action planning, preventive action implementation, and CAPA system optimization.

SKILL

63%

product-strategist

Strategic product leadership toolkit for Head of Product including OKR cascade generation, market analysis, vision setting, and team scaling. Use for strategic planning, goal alignment, competitive analysis, and organizational design.

SKILL

63%

building-native-ui

Complete guide for building beautiful apps with Expo Router. Covers fundamentals, styling, components, navigation, animations, patterns, and native tabs.

SKILL

63%

gh-cli

GitHub CLI (gh) comprehensive reference for repositories, issues, pull requests, Actions, projects, releases, gists, codespaces, organizations, extensions, and all GitHub operations from the command line.

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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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%

↑ 1.79x

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%

↑ 1.28x

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