Tessl • The package manager for agent skills

Featured skills

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

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

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).

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.

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.

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

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).

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.

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/maven-com-typesafe-akka--akka-discovery-2-12

Service discovery API for distributed Akka applications to locate and connect to other services in dynamic environments.

DOCS

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Pending

tessl/maven-com-typesafe-akka--akka-cluster-tools-2-13

Akka Cluster Tools provides utilities for building clustered applications including cluster singleton, distributed publish-subscribe, and cluster client functionality

DOCS

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Pending

tessl/maven-com-typesafe-akka--akka-cluster-2-12

Fault-tolerant decentralized peer-to-peer cluster membership service with no single point of failure for Akka distributed systems

DOCS

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Pending

tessl/maven-com-typesafe-akka--akka-cluster-sharding-2-13

Akka Cluster Sharding provides location transparency and automatic distribution of stateful actors across cluster nodes

DOCS

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Pending

tessl/maven-com-typesafe-akka--akka-actor-2-11

Akka Actor provides the foundational Actor Model implementation for building concurrent, distributed, resilient and elastic applications with supervision hierarchies and location transparency.

DOCS

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Pending

tessl/maven-com-typesafe-akka--akka-actor-2-13

Akka Actor library - a toolkit for building highly concurrent, distributed, and resilient message-driven applications for Java and Scala using the Actor Model.

DOCS

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Pending

tessl/maven-com-typesafe-akka--akka-actor-2-12

Actor Model implementation for building concurrent, distributed, fault-tolerant applications

DOCS

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Pending

tessl/maven-com-typesafe-akka--akka-actor-testkit-typed-2-12

Testing utilities for Akka Typed actors providing synchronous and asynchronous testing capabilities

DOCS

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Pending

tessl/maven-com-lihaoyi--upickle-3

A lightweight JSON and MessagePack serialization library for Scala

DOCS

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Pending

tessl/maven-com-github-nscala-time--nscala-time-2-10

A Scala wrapper for Joda Time that provides idiomatic Scala syntax for date/time operations including operators for addition, subtraction, and comparison.

DOCS

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Pending

tessl/maven-com-chuusai--shapeless-2-12

A type class and dependent type based generic programming library for Scala

DOCS

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Pending

tessl/maven-org-apache-spark--spark-tools-2-12

Development tool for generating MIMA exclusion files to support binary compatibility checking in Apache Spark builds

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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