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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.

95%

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.

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.

100%

elevenlabs/skills

setup-api-key

Sets up an ElevenLabs API key for use with 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.

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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.

95%

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.

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.

100%

elevenlabs/skills

setup-api-key

Sets up an ElevenLabs API key for use with 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.

—

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.

Top performing skills & tiles

Discover more

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

96%

↑ 1.18x

tessl/npm-temporal-polyfill

A lightweight polyfill for Temporal, successor to the JavaScript Date object

DOCS

96%

↑ 1.01x

tessl/npm-sveltejs--adapter-auto

SvelteKit adapter that automatically detects deployment environment and installs appropriate platform-specific adapter

DOCS

96%

↑ 1.05x

tessl/npm-radix-ui--react-tooltip

A React tooltip component from Radix UI Primitives, part of an open-source UI component library for building high-quality, accessible design systems and web apps

DOCS

96%

↑ 1.24x

tessl/npm-nuqs

Type-safe search params state manager for Next.js - Like React.useState, but stored in the URL query string

DOCS

96%

↑ 1.26x

tessl/npm-metro-memory-fs

A memory-based implementation of Node.js fs module for testing purposes

DOCS

96%

↑ 1.20x

tessl/npm-lodash-sum

The lodash method sum exported as a module for computing the sum of values in an array.

DOCS

96%

↑ 1.11x

tessl/npm-gradio--client

JavaScript and TypeScript client library for interacting with Gradio APIs, providing methods to connect to, submit predictions to, and manage connections with Gradio applications.

DOCS

96%

↑ 1.10x

tessl/npm-gl

Creates a WebGL context without a window for headless rendering and server-side graphics

DOCS

96%

↑ 1.20x

tessl/npm-express-rate-limit

Express middleware for IP-based rate limiting with flexible configuration options and multiple storage backends

DOCS

96%

↓ 0.96x

tessl/npm-deep-eql

Improved deep equality testing for Node.js and the browser with support for complex types and circular references.

DOCS

96%

↑ 1.09x

tessl/npm-babel-plugin-transform-react-display-name

Babel plugin that automatically adds displayName properties to React class components created with createClass

DOCS

95%

↑ 1.23x

tessl/npm-workerpool

Offload tasks to a pool of workers on node.js and in the browser

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

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%

↑ 1.78x

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%

↑ 1.27x

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