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The package manager for agent skills

Discover evaluated skills in the Tessl Registry, or install and test any skill from GitHub.

npm i -g @tessl/cli && tessl skill search
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Featured skills

Install our featured skills or any skill from GitHub with Tessl package manager.

91%

softaworks/agent-toolkit

react-dev

This skill should be used when building React components with TypeScript, typing hooks, handling events, or when React TypeScript, React 19, Server Components are mentioned. Covers type-safe patterns for React 18-19 including generic components, proper event typing, and routing integration (TanStack Router, React Router).

tessl install github:softaworks/agent-toolkit --skill react-dev

88%

coreyhaines31/marketingskills

content-strategy

When the user wants to plan a content strategy, decide what content to create, or figure out what topics to cover. Also use when the user mentions "content strategy," "what should I write about," "content ideas," "blog strategy," "topic clusters," or "content planning." For writing individual pieces, see copywriting. For SEO-specific audits, see seo-audit.

tessl install github:coreyhaines31/marketingskills --skill content-strategy

84%

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.

tessl install github:secondsky/claude-skills --skill systematic-debugging

82%

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).

tessl install github:anthropics/skills --skill mcp-builder

91%

softaworks/agent-toolkit

react-dev

This skill should be used when building React components with TypeScript, typing hooks, handling events, or when React TypeScript, React 19, Server Components are mentioned. Covers type-safe patterns for React 18-19 including generic components, proper event typing, and routing integration (TanStack Router, React Router).

tessl install github:softaworks/agent-toolkit --skill react-dev

88%

coreyhaines31/marketingskills

content-strategy

When the user wants to plan a content strategy, decide what content to create, or figure out what topics to cover. Also use when the user mentions "content strategy," "what should I write about," "content ideas," "blog strategy," "topic clusters," or "content planning." For writing individual pieces, see copywriting. For SEO-specific audits, see seo-audit.

tessl install github:coreyhaines31/marketingskills --skill content-strategy

84%

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.

tessl install github:secondsky/claude-skills --skill systematic-debugging

82%

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).

tessl install github:anthropics/skills --skill mcp-builder

Top performing skills & tiles

Evaluate skills

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

100%

↑ 1.01x

tessl/pypi-googletrans

An unofficial Google Translate API for Python providing free text translation and language detection capabilities

DOCS

100%

↑ 1.04x

tessl/npm-wrap-ansi

Wordwrap a string with ANSI escape codes

DOCS

100%

↑ 1.12x

tessl/npm-slidev--cli

Modern presentation framework and CLI tool that transforms Markdown files into interactive, web-based slide presentations with built-in development server, export capabilities, and Vue.js integration

DOCS

100%

↑ 1.04x

tessl/npm-rc-progress

Progress UI component for React providing customizable line and circle progress bars

DOCS

100%

↑ 1.28x

tessl/npm-koa-route

Uber simple route middleware for Koa.js applications with path parameter support

DOCS

100%

↑ 1.15x

tessl/npm-glob-to-regexp

Convert globs to regular expressions

DOCS

100%

↑ 1.00x

tessl/npm-crypto-browserify

Browser-compatible implementation of Node.js crypto module providing cryptographic operations in web environments.

DOCS

100%

↑ 1.12x

tessl/npm-cronstrue

Convert cron expressions into human readable descriptions

DOCS

100%

↑ 1.03x

tessl/npm-babel-plugin-transform-es2015-sticky-regex

Babel plugin that transforms ES2015 sticky regex literals to ES5-compatible RegExp constructor calls

DOCS

99%

modern-python

Configures Python projects with modern tooling (uv, ruff, ty). Use when creating projects, writing standalone scripts, or migrating from pip/Poetry/mypy/black.

SKILL

99%

constant-time-analysis

Detects timing side-channel vulnerabilities in cryptographic code. Use when implementing or reviewing crypto code, encountering division on secrets, secret-dependent branches, or constant-time programming questions in C, C++, Go, Rust, Swift, Java, Kotlin, C#, PHP, JavaScript, TypeScript, Python, or Ruby.

SKILL

99%

sound-effects

Generate sound effects from text descriptions using ElevenLabs. Use when creating sound effects, generating audio textures, producing ambient sounds, foley, cinematic impacts, UI sounds, or any audio that isn't speech. Supports looping, duration control, and prompt influence tuning.

SKILL

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