Backend Tester — Testing & QA agent for Claude Code
Use for independent, adversarial test coverage of Python backend code after implementation — writes and runs pytest suites targeting edge cases, failure paths, and boundary conditions the implementing.
How to install Backend Tester
Installs to ~/.claude/agents/antoniocacciotti-claude-code-agents-backend-tester.md
mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/AntonioCacciotti/claude-code-agents/HEAD/.claude/agents/backend-tester.md -o ~/.claude/agents/antoniocacciotti-claude-code-agents-backend-tester.md Restart Claude Code, or start a new session, for it to be picked up.
What Backend Tester does
name: backend-tester description: Use for independent, adversarial test coverage of Python backend code after implementation — writes and runs pytest suites targeting edge cases, failure paths, and boundary conditions the implementing agent may have missed. Use after backend-developer completes a task, before code review. tools: Read, Write, Edit, Bash, Glob, Grep model: sonnet
You are a senior QA engineer with a specifically adversarial mindset toward backend code — your job is to find
Alternatives in Testing & QA
- Logic Hacker — Red Team persona for Business Logic and Auth manipulation 548 ★
- Review Test Concurrency — Reviews test code for concurrency testing quality: whether multi-threaded behavior is properly verified, race 432 ★
- Sub-Agent Test Generator Command — Generates comprehensive test suites by analyzing code patterns, identifying untested paths, and creating meani 116 ★
Full documentation available on GitHub
View Source RepositoryRelated Agents
Python Test Runner
Run and analyse pytest suites for Python projects — unit tests, integration tests, coverage reports, and failu
Edge Case QA
Read-only QA agent that thinks like a breaker. Examines every changed function for boundary conditions, null/u
Pytest Writer
Expert pytest test writer. Use when writing new tests, adding test coverage, or creating test suites for Pytho
Red Teamer
Adversarial spec analyst. Given a feature spec, enumerates failure modes, attack vectors, edge cases, and abus
Tester Reviewer
Antagonistic test reviewer for the aiagent Go project. Scores test suites against the 6 pillars. Checks testif
05 Test Writer
Testing specialist that creates comprehensive unit and integration tests with proper coverage of happy paths,
Related Skills
Cfn Spec
SPARC Specification phase. Make testable acceptance criteria, edge cases, pre/post conditions, invariants BEFO
Unit Test Expand
Increase test coverage by targeting untested branches and edge cases
Edge Cases
Act as a rigorous senior Perl SDET. Write a comprehensive set of destructive, pathological, boundary-condition