Tessl • The package manager for agent skills

Featured skills

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

97%

a-pavithraa/springboot-skills-marketplace

springboot-migration

Migrate Spring Boot projects to version 4.0 with Java 25, including Spring Modulith 2.0 and Testcontainers 2.x upgrades. Use when user requests upgrading Spring Boot, migrating to Java 25, updating dependencies to Spring Boot 4, mentions Jackson 3 migration, asks about starter renames (web→webmvc, aop→aspectj), fixing test annotations (@MockBean→@MockitoBean), or needs help with Spring Modulith 2.0 or Testcontainers 2.x compatibility. Analyzes codebase for migration issues and guides through changes with specific file references.

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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.

99%

projectbluefin/dakota

subagent-driven-development

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

96%

anthropics/skills

frontend-design

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.

97%

a-pavithraa/springboot-skills-marketplace

springboot-migration

Migrate Spring Boot projects to version 4.0 with Java 25, including Spring Modulith 2.0 and Testcontainers 2.x upgrades. Use when user requests upgrading Spring Boot, migrating to Java 25, updating dependencies to Spring Boot 4, mentions Jackson 3 migration, asks about starter renames (web→webmvc, aop→aspectj), fixing test annotations (@MockBean→@MockitoBean), or needs help with Spring Modulith 2.0 or Testcontainers 2.x compatibility. Analyzes codebase for migration issues and guides through changes with specific file references.

—

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.

99%

projectbluefin/dakota

subagent-driven-development

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

96%

anthropics/skills

frontend-design

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.

Top performing skills & tiles

Discover more

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

91%

↑ 1.01x

tessl/npm-storybook--builder-webpack4

Webpack 4-based builder for Storybook that provides framework-agnostic build engine for preview iframe compilation and bundling.

DOCS

91%

↓ 0.98x

tessl/npm-stablelib--sha256

SHA-256 cryptographic hash function implementation for TypeScript and JavaScript

DOCS

91%

↑ 1.04x

tessl/npm-koa-helmet

Security header middleware collection for Koa applications that wraps Helmet.js

DOCS

91%

↑ 1.02x

tessl/npm-babel--plugin-transform-parameters

Babel plugin that compiles ES2015 default and rest parameters to ES5-compatible code

DOCS

90%

↑ 1.13x

tessl/npm-unique-random

Generate random numbers that are consecutively unique

DOCS

90%

↑ 1.15x

tessl/npm-slate-hyperscript

A hyperscript helper for creating Slate documents with JSX-like syntax.

DOCS

90%

↑ 1.09x

tessl/npm-nx--angular

Comprehensive Angular plugin for Nx workspaces providing executors, generators, and utilities for managing Angular applications and libraries.

DOCS

90%

↑ 1.50x

tessl/npm-micromatch

Glob matching for javascript/node.js, a replacement and faster alternative to minimatch and multimatch

DOCS

90%

↑ 1.11x

tessl/npm-fs-readdir-recursive

Recursively read a directory and return an array of all file paths

DOCS

90%

↑ 1.16x

tessl/npm-cacache

Fast, fault-tolerant, cross-platform, disk-based, data-agnostic, content-addressable cache.

DOCS

89%

↑ 1.15x

tessl/npm-swc--core-darwin-arm64

Platform-specific native binary for SWC TypeScript/JavaScript compiler on macOS ARM64 architecture

DOCS

89%

↓ 0.95x

tessl/npm-supabase--supabase-js

Isomorphic JavaScript client for Supabase providing authentication, database, real-time, storage, and edge functions capabilities.

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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Enterprise-ready skills from trusted publishers.

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

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

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

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

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

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

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