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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

setup-api-key

Guides users through setting up an ElevenLabs API key for ElevenLabs MCP tools. Use when the user needs to configure an ElevenLabs API key, when ElevenLabs tools fail due to missing API key, or when the user mentions needing access to ElevenLabs. First checks whether ELEVENLABS_API_KEY is already configured and valid, and only runs full setup when needed.

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

docx

Use this skill whenever the user wants to create, read, edit, or manipulate Word documents (.docx files). Triggers include: any mention of 'Word doc', 'word document', '.docx', or requests to produce professional documents with formatting like tables of contents, headings, page numbers, or letterheads. Also use when extracting or reorganizing content from .docx files, inserting or replacing images in documents, performing find-and-replace in Word files, working with tracked changes or comments, or converting content into a polished Word document. If the user asks for a 'report', 'memo', 'letter', 'template', or similar deliverable as a Word or .docx file, use this skill. Do NOT use for PDFs, spreadsheets, Google Docs, or general coding tasks unrelated to document generation.

openai/skills

linear

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

elevenlabs/skills

setup-api-key

Guides users through setting up an ElevenLabs API key for ElevenLabs MCP tools. Use when the user needs to configure an ElevenLabs API key, when ElevenLabs tools fail due to missing API key, or when the user mentions needing access to ElevenLabs. First checks whether ELEVENLABS_API_KEY is already configured and valid, and only runs full setup when needed.

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

docx

Use this skill whenever the user wants to create, read, edit, or manipulate Word documents (.docx files). Triggers include: any mention of 'Word doc', 'word document', '.docx', or requests to produce professional documents with formatting like tables of contents, headings, page numbers, or letterheads. Also use when extracting or reorganizing content from .docx files, inserting or replacing images in documents, performing find-and-replace in Word files, working with tracked changes or comments, or converting content into a polished Word document. If the user asks for a 'report', 'memo', 'letter', 'template', or similar deliverable as a Word or .docx file, use this skill. Do NOT use for PDFs, spreadsheets, Google Docs, or general coding tasks unrelated to document generation.

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 analyzes skills and tiles for their impact on agent success.

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Pending

tessl/pypi-python-yubico

Python library for communicating with Yubico YubiKey hardware authentication tokens

DOCS

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Pending

tessl/pypi-python-xmp-toolkit

Python library for working with XMP (Extensible Metadata Platform) metadata in files.

DOCS

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Pending

tessl/pypi-python-vlc

VLC bindings for Python providing comprehensive multimedia functionality through LibVLC API.

DOCS

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Pending

tessl/pypi-python-terrier

A comprehensive Python API for the Terrier information retrieval platform, enabling declarative experimentation with transformer pipelines for indexing, retrieval, and evaluation tasks.

DOCS

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Pending

tessl/pypi-python-ulid

Universally unique lexicographically sortable identifier implementation for Python

DOCS

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Pending

tessl/pypi-python-telegram-bot

A pure Python, asynchronous interface for the Telegram Bot API with comprehensive wrapper and high-level framework for building sophisticated Telegram bots

DOCS

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Pending

tessl/pypi-python-statemachine

Python finite state machine library with declarative API for sync and async applications

DOCS

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Pending

tessl/pypi-python-socks

Proxy (SOCKS4, SOCKS5, HTTP CONNECT) client for Python

DOCS

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Pending

tessl/pypi-python-socketio

Socket.IO server and client for Python providing real-time bidirectional communication

DOCS

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Pending

tessl/pypi-python-slugify

A Python slugify application that handles Unicode text conversion to URL-friendly slugs

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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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