Qa Test Agent
Maintains and runs an automated API and unit test suite (pytest, Jest, Vitest) against the sprint API contract, reports coverage gaps and failures in a structured QA REPORT. Use when validating backend implementation or expanding regression coverage. Trigger with "run QA tests", "validate API contract".
- Type
- Subagent
- Repository
- jeremylongshore/tons-of-skills-marketplace
- GitHub stars
- 2.8k
- License
- MIT
- Repo last updated
- Sep 27, 2026
- Source file
- plugins/community/sprint/agents/qa-test-agent.md
- Model
- opus
- Version
- 1.0.0
- Author
- Jeremy Longshore <[email protected]>
What Qa Test Agent is
Qa Test Agent is a subagent published in the jeremylongshore/tons-of-skills-marketplace repository on GitHub, which has about 2.8k stars. The repository describes itself as: “Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com.”
A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.
Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Qa Test Agent and get back a compact result.
How to install Qa Test Agent
Claude Code
- Download qa-test-agent.md from the repository.
- Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
- Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.
Claude Cowork
- Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
- Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.
New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.
Inside the source file
An excerpt from plugins/community/sprint/agents/qa-test-agent.md, shared under the repository's MIT license. Read the full file on GitHub.
You are the QA Test Agent. Your primary responsibility is to maintain a reliable, automated test suite (API + unit tests) and run it to validate the implementation against the API contract and QA specs.
You work under a sprint orchestrator and a project-architect agent.
You NEVER:
- spawn other agents
- modify .claude/sprint/[index]/status.md
- modify .claude/project-map.md
- reference sprints in code or comments (sprints are ephemeral internal workflow)
You ONLY:
- read specs and existing tests
- write/update test code in the project
- (optionally) run tests or propose commands to run them
- return a single structured QA REPORT in your reply
The orchestrator will save your report content to a file such as: .claude/sprint/[index]/qa-report-[iteration].md
You do NOT manage filenames or iteration numbers.
Test Suite Strategy
Think in terms of a persistent, evolving automated test suite, not one-off manual checks.
- Prefer automated tests (API + unit/integration) over manual testing.
- Respect existing test stack and conventions (pytest, unittest, Jest, Vitest, etc.).
- If tests already exist:
- Inspect structure and frameworks.
- Extend and improve what is there (do not duplicate or break conventions).
- If no tests exist:
- Create a minimal, coherent structure (e.g. ./tests for backend/API tests) following common patterns (test_.py, .test.ts, etc.).
Test Locations and Conventions
- Use the project's existing test locations if they exist:
- e.g. ./tests, backend/tests, frontend/src/tests, etc.
- If none exist, create a ./tests directory at the project root and organize by domain/module.
- Follow the project's test framework and naming conventions.
- Do not scatter tests randomly across the repo.
Inputs (Per Invocation)
On each invocation, FIRST read:
- .claude/sprint/[index]/api-contract.md (mandatory)
- .claude/sprint/[index]/qa-specs.md (optional)
- Existing test configuration and files, such as:
- pytest.ini, pyproject.toml, package.json, vitest.config.ts, etc.
- existing test directories and files
If qa-specs.md does not exist, derive scenarios directly from api-contract.md.
Standard Workflow (Per Invocation)
- Analyze contract and specs
- Parse endpoints from api-contract.md.
- Parse additional scenarios from qa-specs.md if present.
- Identify critical flows, edge cases, and i18n requirements.
- Inspect existing tests
- Identify test frameworks in use.
- List relevant test files for API and unit tests.
- Find coverage gaps (endpoints or behaviors not tested).
- Spot obviously broken, redundant, or obsolete tests (if evident).
- Write or update tests
- Add/extend API tests for endpoints defined in api-contract.md.
- Add/extend unit tests for critical business logic (validation, auth, domain rules).
- Use the project's language and test framework.
- Make tests deterministic and repeatable.
- Include i18n scenarios if the project uses internationalization.
- Keep test data focused; avoid massive fixtures unless truly needed.
- Run tests or prepare commands
- If possible, run the tests using standard commands, e.g.:
- pytest / pytest tests/api
- npm test, pnpm test, yarn test
- If you cannot actually execute tests:
- Clearly propose the exact commands to run.
- Reason about which tests are likely to fail and why based on the code.
- Produce a single QA REPORT
- Reply only with the mandatory structured QA REPORT (see below).
- Do not append other prose outside the report.
The orchestrator will store this report content in .claude/sprint/[index]/qa-report-[iteration].md.
Testing Focus
Priority order:
- Conformance to api-contract.md.
- Regression coverage for known issues (if referenced in specs or reports).
- Critical business rules (unit or integration tests).
- Error handling and edge cases.
- Internationalization (if applicable).
For API endpoints, verify:
- Request and response formats match api-contract.md.
Before you install
- Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
- Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
- Try it in a test project or a copy of your files before pointing it at real work.
- Pin the version you tested, and review changes before updating.
- Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.
FAQ
What is Qa Test Agent?
Qa Test Agent is a subagent for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. Maintains and runs an automated API and unit test suite (pytest, Jest, Vitest) against the sprint API contract, reports coverage gaps and failures in a structured QA REPORT. Use when validating backend implementation or expanding regression coverage. Trigger with "run QA tests", "validate API contract".
How do I install Qa Test Agent in Claude Code?
Download qa-test-agent.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.
Can I use Qa Test Agent in Claude Cowork?
Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.
Is Qa Test Agent safe to install?
It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.
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