A test-first development command based on TDD, a method where you write a failing test before the code that should pass it. It guides the repeated write, implement, pass, and refactor cycle.

It is for designing test suites, implementing features through TDD, running tests continuously, and reviewing coverage.

It helps define expected behavior early and catch regressions through unit, integration, end-to-end, performance, and security tests.

tdd — Command for Claude Code by spencermarx: A test-first development command based on TDD, a method…

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 commands/spencermarx/open-code-review/tdd

Clone the repo

git clone --depth 1 https://github.com/spencermarx/open-code-review

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/commands/spencermarx/open-code-review/tdd.svg)](https://agentmods.dev/commands/spencermarx/open-code-review/tdd)

Your own site

<a href="https://agentmods.dev/commands/spencermarx/open-code-review/tdd"><img src="https://agentmods.dev/badge/commands/spencermarx/open-code-review/tdd.svg" alt="Measured on agentmods" height="20"></a>

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 286 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin 100% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5	$0.00000	$0.00286
Opus 5	$0.00000	$0.00143
Sonnet 5	$0.00000	$0.00057
Haiku 4.5	$0.00000	$0.00029

Measured 2d ago against content hash fd48e2e17900, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

tdd 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.

Origin

This is a copy

100% identical to tdd — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/commands/sparc/tdd.md · 55 lines

What it actually says

SPARC TDD Mode

Purpose

Test-driven development with TodoWrite planning and comprehensive testing.

Activation

Option 1: Using MCP Tools (Preferred in Claude Code)

mcp__claude-flow__sparc_mode {
  mode: "tdd",
  task_description: "shopping cart feature",
  options: {
    coverage_target: 90,
    test_framework: "jest"
  }
}

Option 2: Using NPX CLI (Fallback when MCP not available)

# Use when running from terminal or MCP tools unavailable
npx claude-flow sparc run tdd "shopping cart feature"

# For alpha features
npx claude-flow@alpha sparc run tdd "shopping cart feature"

Option 3: Local Installation

# If claude-flow is installed locally
./claude-flow sparc run tdd "shopping cart feature"

Core Capabilities

Test-first development
Red-green-refactor cycle
Test suite design
Coverage optimization
Continuous testing

TDD Workflow

Write failing tests
Implement minimum code
Make tests pass
Refactor code
Repeat cycle

Testing Strategies

Unit testing
Integration testing
End-to-end testing
Performance testing
Security testing

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.

2d ago First seen · 55 lines · 0 tokens per session scan A fd48e2e17900

Subscribe to this mod's changes

tdd is a command published in the GitHub repository spencermarx/open-code-review (355 stars, last pushed 1mo ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 286 tokens. A static security scan graded it A with 0 findings. It is 100% identical to tdd, differing in 0 lines, and is treated as a copy.

TDD Testing agentic-ai agents ai claude-ai claude-code claude-code-plugin

tdd