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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.

planetscale/database-skills

postgres

PostgreSQL best practices, query optimization, connection troubleshooting, and performance improvement. Load when working with Postgres databases.

hashicorp/agent-skills

run-acceptance-tests

Guide for running acceptance tests for a Terraform provider. Use this when asked to run an acceptance test or to run a test with the prefix `TestAcc`.

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.

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.

planetscale/database-skills

postgres

PostgreSQL best practices, query optimization, connection troubleshooting, and performance improvement. Load when working with Postgres databases.

hashicorp/agent-skills

run-acceptance-tests

Guide for running acceptance tests for a Terraform provider. Use this when asked to run an acceptance test or to run a test with the prefix `TestAcc`.

anthropics/skills

pdf

anthropics/skills

docx

Top performing skills & tiles

Discover more

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

tessl/npm-prelude-ls

A functionally oriented utility library for LiveScript with curried functions for lists, objects, strings, numbers, and function composition.

DOCS

tessl/npm-picocolors

The tiniest and the fastest library for terminal output formatting with ANSI colors

DOCS

tessl/npm-lilconfig

A zero-dependency alternative to cosmiconfig for loading configuration files

DOCS

tessl/npm-base64url

For encoding to/from base64urls implementing RFC 4648 base64url standard

DOCS

tessl/npm-babel--plugin-transform-block-scoped-functions

Babel plugin to ensure function declarations at the block level are block scoped

DOCS

tessl/npm-angular-devkit--build-ng-packagr

Angular Build Architect builder for ng-packagr library packaging (deprecated)

DOCS

tessl/npm-tiptap--extension-link

Link extension for tiptap rich text editor providing automatic link detection, paste handling, click behavior, and XSS protection.

DOCS

tessl/npm-shebang-regex

Regular expression for matching Unix shebang lines at the beginning of files

DOCS

tessl/npm-plist

Apple's property list parser/builder for Node.js and browsers

DOCS

tessl/npm-babel-plugin-transform-es2015-computed-properties

Babel plugin that compiles ES2015 computed properties to ES5-compatible code

DOCS

tessl/npm-google--gemini-cli-core

Gemini CLI Core - Core functionality library for the open-source AI agent that brings the power of Gemini directly into your terminal.

DOCS

tessl/npm-vuelidate--validators

Comprehensive validation library for Vue.js applications providing common validators with built-in error messages and customization options

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