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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.

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.

openai/skills

notion-knowledge-capture

Capture conversations and decisions into structured Notion pages; use when turning chats/notes into wiki entries, how-tos, decisions, or FAQs with proper linking.

projectbluefin/dakota

subagent-driven-development

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

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.

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.

openai/skills

notion-knowledge-capture

Capture conversations and decisions into structured Notion pages; use when turning chats/notes into wiki entries, how-tos, decisions, or FAQs with proper linking.

projectbluefin/dakota

subagent-driven-development

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

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.

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Pending

tessl/npm-web3-eth-ens

ENS support for web3 enabling developers to interact with ENS domains and resolve them to Ethereum addresses and other record types.

DOCS

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Pending

tessl/npm-web3-core-helpers

Core helper utilities providing standardized error handling and data formatting for the Web3.js ecosystem

DOCS

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Pending

tessl/npm-web3-eth-contract

Web3 module to interact with Ethereum smart contracts with TypeScript type safety

DOCS

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Pending

tessl/npm-web3-eth-abi

Web3 module encode and decode EVM in/output.

DOCS

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Pending

tessl/npm-web3-core

Core tools and utilities for the web3.js ecosystem, providing foundational layer functionality for blockchain interactions.

DOCS

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Pending

tessl/npm-web-tree-sitter

Tree-sitter bindings for the web providing WebAssembly-based incremental parsing of source code

DOCS

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Pending

tessl/npm-web-vitals

Easily measure performance metrics in JavaScript

DOCS

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Pending

tessl/npm-web--test-runner-playwright

Playwright browser launcher for Web Test Runner enabling cross-browser testing with Chromium, Firefox, and WebKit

DOCS

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Pending

tessl/npm-web-streams-polyfill

Web Streams polyfill providing ReadableStream, WritableStream, and TransformStream implementations based on the WHATWG specification

DOCS

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Pending

tessl/npm-web--dev-server-esbuild

Plugin for using esbuild in @web/dev-server to transform TypeScript, JSX, TSX, and JavaScript files during development

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