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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.

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.

secondsky/claude-skills

systematic-debugging

Four-phase debugging framework that ensures root cause investigation before attempting fixes. Never jump to solutions. Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

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.

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.

secondsky/claude-skills

systematic-debugging

Four-phase debugging framework that ensures root cause investigation before attempting fixes. Never jump to solutions. Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

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.

Top performing skills & tiles

Discover more

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

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Pending

tessl/npm-dustjs-linkedin

Asynchronous templates for the browser and server (LinkedIn fork)

DOCS

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Pending

tessl/npm-dustjs-helpers

Context helpers that extend the core Dust.js templating system with conditional logic, mathematical operations, and iteration utilities.

DOCS

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Pending

tessl/npm-phoenix-websocket

A custom implementation of the Channels API for communicating with an Elixir/Phoenix backend via WebSockets.

DOCS

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Pending

tessl/npm-cdktf

Cloud Development Kit for Terraform - programmatic infrastructure as code using familiar programming languages

DOCS

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Pending

tessl/npm-drizzle-orm

TypeScript ORM for SQL databases with type-safe queries, schema definitions, and support for PostgreSQL, MySQL, SQLite, and more.

DOCS

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Pending

tessl/npm-types--phoenix

TypeScript definitions for Phoenix JavaScript client library enabling real-time WebSocket communication with Phoenix Framework applications

DOCS

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Pending

tessl/npm-arizeai--phoenix-client

A TypeScript client for the Phoenix API providing AI observability, prompt management, datasets, experiments, and tracing capabilities.

DOCS

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Pending

tessl/npm-arduino--arduino-iot-client

JavaScript client library for the Arduino IoT Cloud REST API enabling programmatic management of devices, things, properties, and time-series data

DOCS

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Pending

tessl/npm-arduino-iot-js

JavaScript/TypeScript library for connecting to the Arduino IoT Cloud MQTT broker with support for both browser and Node.js applications.

DOCS

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Pending

tessl/npm-oxlint

High-performance JavaScript and TypeScript linter written in Rust, designed as part of the Oxc (Oxidation Compiler) suite of tools

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, 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

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