Testing

20,047 mods in this category, of every kind an agent can take. Each one carries what it costs per session, what the scan found, and whether it is the original.

skillgrade-graders

121

mgechev/skillgrade

Skill Claude CodeCodex needs its repo

Authors deterministic, LLM rubric, and human graders for skillgrade evaluations. Use when creating scoring scripts, writing evaluation rubrics, setting up human review workflows, or combining multiple graders with weighted scoring. Don't use for setting up eval pipelines, configuring eval.yaml defaults, or general…

not rated 735 +1 changed 27d ago A SkillSpector: pass 63 tokens original MIT

eval-validity-review

122

UKGovernmentBEIS/inspect_evals

Skill Claude Code

Review a single evaluation's validity — whether its claims hold up, whether its name is accurate, whether samples can be both succeeded and failed at, and whether scoring measures ground truth. Use when user asks to check validity of an eval, or as part of the Master Checklist workflow. Do NOT use for code quality or…

not rated 734 +3 yesterday A SkillSpector: pass 83 tokens original MIT

shinpr/claude-code-workflows

Agent Claude Code

Specialized agent for verifying React projects and fixing frontend quality failures within the current task scope. Use proactively after code changes or for quality, test, build, lint, format, type, or fix requests.

not rated 712 +3 changed today A 47 tokens original MIT

fixture-monkey

124

naver/fixture-monkey

Plugin Claude Code

Bundles 1 skill · 42 tokens together

Write Java and Kotlin test fixtures that pin only what the scenario depends on and leave the rest random.

not rated 698 +2 6d ago A tokens not measured copy · 89% Apache-2.0

add-benchmark

125

allenai/vla-evaluation-harness

Skill Claude CodeCodex

Add or improve a simulation benchmark in vla-eval, including evaluation protocol, assets, adapter lifecycle, and runtime validation.

not rated 676 +11 changed 5d ago A SkillSpector: pass 29 tokens original Apache-2.0

obsidian-e2e

126

uphy/obsidian-reminder

Skill Claude Code

An automated end-to-end test workflow for a running Obsidian application, controlled through Chrome DevTools Protocol. Obsidian is a note-taking app, and end-to-end testing checks behavior across the real application rather than only individual functions.

not rated 662 +1 changed 6d ago A SkillSpector: warn 140 tokens original MIT

skillevaluator

127

NVIDIA/SkillEvaluator

Skill Claude CodeCodex ✓ vendor

Run and interpret SkillEvaluator for agent skills. Use for any skill benchmark or eval - validating or scoring a SKILL.md, writing evals.json test cases or evals config, explaining benchmark reports, verdicts and exit codes, or gating skills in CI.

not rated 651 +31 today A 56 tokens original Apache-2.0

foundry-testing

128

PaulRBerg/foundry-template

Skill Codex

Write and debug Foundry tests and Solidity scripts. Use when writing unit, fuzz, fork, or invariant tests, writing bulloak BTT .tree specs (Branching Tree Technique), using cheatcodes, benchmarking gas, measuring coverage, writing deploy scripts, or working in tests/ or script/.

not rated 642 8d ago A 64 tokens original MIT

nw-tdd-methodology

129

nWave-ai/nWave

Skill Claude Code

Deep knowledge for Outside-In TDD - double-loop architecture, ATDD integration, port-to-port testing, walking skeletons, and test doubles policy.

not rated 632 +4 2d ago A SkillSpector: pass 35 tokens original MIT

solid

130

ramziddin/solid-skills

Skill Claude CodeCodex

Use this skill when writing code, implementing features, refactoring, planning architecture, designing systems, reviewing code, or debugging. This skill transforms junior-level code into senior-engineer quality software through SOLID principles, TDD, clean code practices, and professional software design.

not rated 626 +6 changed 2mo ago A Socket: passSnyk: pass 56 tokens

test-writer

131

vinilana/dotcontext

Agent Claude Code

Write comprehensive unit and integration tests.

not rated 576 3mo ago A 10 tokens original MIT

create-task

132

zli12321/LHTB

Skill Claude Code

Create a new Harbor task for evaluating agents. Use when the user wants to scaffold, build, or design a new task, benchmark problem, or eval. Guides through instruction writing, environment setup, verifier design (pytest vs Reward Kit vs custom), and solution scripting.

not rated 569 3d ago A ✓ AI review 56 tokens copy · 88% Apache-2.0

gm-evaluate

133

RandallLiuXin/GodotMaker

Skill Claude Code

Evaluate the current tag's quality: enforce the playable-closed-loop gate, maintain a single cross-tag e2e/ suite that always reflects the current game (add tests for new mechanics, prune tests for mechanics this tag deliberately removed), and reason about gameplay quality. Independent from the build process — fresh…

not rated 559 +1 changed 15d ago A 84 tokens

debug-aro-hcp-e2e

134

openshift/hypershift

Cursor rule Cursor

How to debug ARO HCP e2e tests using CI artifacts and common workflows.

not rated 550 +2 today A 17 tokens original Apache-2.0

dart-lang/skills

Skill Claude CodeCodex

Replace the usage of expect and similar functions from package:matcher to package:checks equivalents.

not rated 545 +8 changed 3d ago A Socket: passSnyk: pass 32 tokens copy · 100% BSD-3-Clause

e2e-runner

136

vibeeval/vibecosystem

Agent Claude Code needs its repo

End-to-end testing specialist using Vercel Agent Browser (preferred) with Playwright fallback. Use PROACTIVELY for generating, maintaining, and running E2E tests. Manages test journeys, quarantines flaky tests, uploads artifacts (screenshots, videos, traces), and ensures critical user flows work.

not rated 539 +2 3d ago A 69 tokens original MIT

RevylAI/revyl-cli

Skill Codex

Import an existing test suite into Revyl. Converts Playwright, Cypress, Selenium, WebdriverIO, Maestro, Appium, XCUITest, Espresso, Detox, Gherkin, manual test-case exports (CSV, TestRail, Zephyr, Xray) or plain-language test docs into goal-level Revyl YAML tests with shared login modules and parameterised accounts…

not rated 526 changed 2d ago A 109 tokens

tester

141

iusztinpaul/designing-real-world-ai-agents-workshop

Agent Claude Code

Tester role definition for /implement-universal. Loaded by the orchestrator at the start of the Tester phase, on logic tickets only. Trusts the SWE phase's happy-path e2e excerpt (does NOT re-run the Make target), runs at most 1 adversarial break path, walks every Acceptance Criterion with concrete evidence, and emits…

not rated 521 5mo ago A 99 tokens copy · 89% MIT

managedcode/dotnet-skills

Skill Claude CodeCodex

Use this skill before answering, planning, or editing any MSTest 3.x-to-4.x upgrade or post-upgrade failure. Triggers include "MSTest v4 breaking changes"; CS0507/CS0103/CS1061/CS1615; ExecuteAsync, CallerInfo, DisplayName, or custom TestMethodAttribute; ClassCleanupBehavior; ContainsKey; ThrowsExactly or…

not rated 509 +10 changed 2mo ago A SkillSpector: warn 179 tokens original MIT

verify

144

GoDiao/dreamcoder

Skill Claude CodeCodex

Verify a code change does what it should by running the app.

not rated 504 +1 yesterday A 15 tokens copy · 100%

At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: