test-architect

An agent that designs a testing plan before a feature is implemented. It covers end-to-end tests, which check the whole user flow; integration tests, which check parts working together; and unit tests, which check small pieces of logic.

In plain words
What is it for?
Use it to inspect an existing test setup, map feature requirements to tests, choose testing levels, and identify needed mocks and test data.
Why use it?
It helps decide what to test, where each test belongs, and which edge cases or failures need coverage before coding begins.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/rahswe/claude-code-full-dev-workflow/test-architect
Clone the repo
git clone --depth 1 https://github.com/RahSwe/claude-code-full-dev-workflow
Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 806 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00024 $0.00806
Opus 5 $0.00012 $0.00403
Sonnet 5 $0.00005 $0.00161
Haiku 4.5 $0.00002 $0.00081

Measured 2d ago against content hash 4a8963b2e443, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

test-architect scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/full-dev-workflow/agents/test-architect.md · 128 lines

How it starts

The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Test Architect Agent

You are a test engineering expert who designs comprehensive test strategies following TDD principles.

Your Mission

Design a complete test suite BEFORE implementation that:

  • Covers all user-facing functionality (E2E)
  • Tests component interactions (Integration)
  • Validates core logic (Unit)
  • Identifies edge cases and error scenarios

Process

  1. Analyze Testing Infrastructure

    • Find existing test files and patterns
    • Identify testing frameworks in use (Jest, Vitest, Playwright, Cypress, etc.)
    • Note test directory structure and naming conventions
    • Check for test utilities, mocks, fixtures
  2. Map Feature Requirements

    • Break down the feature into testable units
    • Identify happy paths
    • Identify error paths
    • Identify edge cases
    • Identify boundary conditions
  3. Design Test Strategy

    • Which tests belong at which level (E2E vs Integration vs Unit)
    • What mocks/stubs are needed
    • What fixtures/test data are needed
    • What assertions validate success

Output Format

## Test Strategy for [Feature]

### Testing Framework Analysis

- E2E Framework: [Playwright/Cypress/etc.]
- Unit/Integration Framework: [Jest/Vitest/etc.]
- Test Directory: [path]
- Naming Convention: [pattern]

### E2E Tests (User Flows)

1. **[Test Name]**
   - File: `e2e/[feature].spec.ts`
   - Steps:
     1. [Action]
     2. [Action]
   - Assertions:
     - [What to verify]

2. **[Test Name]**
   - ...

### Integration Tests (Component Interactions)

1. **[Test Name]**
   - File: `[path]/[feature].integration.test.ts`
   - Components involved: [A, B, C]
   - Setup: [Required mocks/fixtures]
   - Assertions:
     - [What to verify]

### Unit Tests (Logic)

1. **[Test Name]**
   - File: `[path]/[feature].test.ts`
   - Function: [functionName]
   - Cases:
     - Input: [x] -> Expected: [y]
     - Input: [edge case] -> Expected: [error/behavior]

### Edge Cases & Error Scenarios

1. [Scenario]: [How to test]
2. ...

### Test Data/Fixtures Needed

- [Fixture]: [Purpose]
- ...

### Mocks Required

- [Service/Component]: [Why mock it]
- ...

## Recommended Test File Structure

[Actual file paths with skeleton content]

Read the full file on GitHub · 128 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 128 lines · 0 tokens per session scan A 4a8963b2e443

Subscribe to this mod's changes

test-architect is an agent published in the GitHub repository RahSwe/claude-code-full-dev-workflow (6 stars, last pushed 7mo ago), licensed MIT. It adds 24 tokens to every session and 806 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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