AI Agent Skill Repository
Browse reusable skills for Codex, Claude Code, Cursor, finance, research, web scraping, PPT, football analytics, data, marketing, design, and more.
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Showing 1-15 of 15 ranked candidates matching "assertions"
Best blend of relevance, quality, freshness, and verified outcomes
Use when about to claim work is complete, fixed, or passing, before committing or creating PRs - requires running verification commands and confirming output before maki…
$ npx skills add obra/superpowers --skill verification-before-completionScenario Design and creative · I need my agent to produce design assets, UI directions, presentations, or creative media workflows.
Claude Code + CLI · 4 targets
Establishes a project's quality bar as a written contract and stops agents quietly lowering it. Interviews the user on which dimensions matter, supplies sane default thr…
$ npx skills add addyosmani/agent-skills --skill constraint-driven-developmentScenario RAG and knowledge · I need my agent to build a RAG workflow over documents and retrieve reliable context.
Claude Code + CLI · 4 targets
Embedded unit testing framework for Godot 4 supporting GDScript and C#. Features test-driven development, embedded test inspector, extensive assertions, mocking, scene t…
$ npx skills add godot-gdunit-labs/gdUnit4Scenario Testing and QA · I need my agent to test a web app, reproduce bugs, and verify fixes.
CLI + Codex · 4 targets
Write, refine, run, and QA non-redteam promptfoo eval suites after the target or provider already works: prompts, vars, test cases, assertions, model-graded rubrics, tra…
$ npx skills add promptfoo/promptfoo --skill promptfoo-evalsScenario Testing and QA · I need my agent to test a web app, reproduce bugs, and verify fixes.
Claude Code + CLI · 4 targets
Comprehensive guide for writing and running Terraform tests. Use when creating test files (.tftest.hcl), writing test scenarios with run blocks, validating infrastructur…
$ npx skills add hashicorp/agent-skills --skill terraform-testScenario Research agents · I need my agent to research a topic, compare sources, and produce a concise report.
Claude Code + CLI · 4 targets
Apply, review, and explain TypeScript variable conventions. Use automatically for tasks involving variable declarations, const assertions, enum alternatives, literal-uni…
$ npx skills add mkosir/typescript-style-guide --skill typescript-variablesScenario Coding agents · I need a coding agent that can understand a repository, edit code, and review pull requests.
Claude Code + CLI · 4 targets
Apply, review, and explain TypeScript type conventions. Use automatically for tasks involving inference, readonly data, type-safe constants, template literal types, any…
$ npx skills add mkosir/typescript-style-guide --skill typescript-typesScenario Local desktop · I need my agent to operate local files and desktop apps in a repeatable workflow.
Claude Code + CLI · 4 targets
A collection of reusable Bash functions for handling common tasks such as logging, assertions, string manipulation, and more
$ npx skills add gruntwork-io/bash-commonsScenario GitHub automation · I need my agent to triage GitHub issues, review pull requests, and summarize repository changes.
CLI + Codex · 4 targets
Automated UI testing for Windows desktop apps — generate a batch test script with the `winapp ui` UI Automation harness, run all tests in one pass, read results. Covers…
$ npx skills add microsoft/win-dev-skills --skill winui-ui-testingScenario Testing and QA · I need my agent to test a web app, reproduce bugs, and verify fixes.
Claude Code + CLI · 4 targets
Playwright PHP library for browser automation: navigation, E2E tests, assertions, screenshots, and so much more!
$ npx skills add playwright-php/playwrightScenario Testing and QA · I need my agent to test a web app, reproduce bugs, and verify fixes.
Browser agents + CLI · 4 targets
Read an approved GRACE 4 GraceChangeSpec and optional design context, then create a GraceChangePlan with assertions, scopes, tasks, and verification gates.
$ npx skills add osovv/grace-marketplace --skill grace-planScenario Research agents · I need my agent to research a topic, compare sources, and produce a concise report.
Claude Code + CLI · 4 targets
Review GRACE 4 integrity across .grace artifacts, active changes, scopes, assertions, code anchors, and verification evidence.
$ npx skills add osovv/grace-marketplace --skill grace-reviewerScenario Coding agents · I need a coding agent that can understand a repository, edit code, and review pull requests.
Claude Code + CLI · 4 targets
Debug and fix issues in a GRACE 4 project using .grace semantic navigation, assertions, and verification evidence.
$ npx skills add osovv/grace-marketplace --skill grace-fixScenario Coding agents · I need a coding agent that can understand a repository, edit code, and review pull requests.
Claude Code + CLI · 4 targets
Create GRACE 4 worker and reviewer subagent presets that understand .grace artifacts, scopes, assertions, and verification evidence.
$ npx skills add osovv/grace-marketplace --skill grace-setup-subagentsScenario Coding agents · I need a coding agent that can understand a repository, edit code, and review pull requests.
Claude Code + CLI · 4 targets
Comprehensive end-to-end testing skill using Playwright for web applications, covering page objects, selectors, assertions, waits, fixtures, and test organization.
$ npx skills add PramodDutta/qaskills --skill playwright-e2eScenario Testing and QA · I need my agent to test a web app, reproduce bugs, and verify fixes.
Claude Code + Browser agents · 4 targets