codingbuddy: Command for Claude Code

.opencode/commands/implement-tdd.md

implement-tdd is a command for Claude Code, OpenCode from JeremyDev87/codingbuddy. It costs 0 tokens per session (211 once invoked), scanned A, original, MIT.

A coding command that follows test-driven development, or TDD: write a failing test, make it pass with the smallest change, then improve the code. It also applies the project's stated rules and responds in Korean.

In plain words
What is it for?
Use it to implement changes with tests, run quality checks, maintain TypeScript and design standards, and commit after the tests pass.
Why use it?
It gives implementation work a repeatable order and checks the code after each stage.

Command for Claude CodeOpenCode

Written for OpenCode and Claude Code: installed under .opencode/, but also a Claude Code command (commands/*.md). Also seen: mentions OpenCode.

This is JeremyDev87/codingbuddy's own configuration. It tells Claude Code and OpenCode how to work on codingbuddy itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything codingbuddy configures →

Reuse

Borrowing it

Nothing to install: this file belongs to JeremyDev87/codingbuddy. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/JeremyDev87/codingbuddy/master/.opencode/commands/implement-tdd.md
Clone the repo
git clone --depth 1 https://github.com/JeremyDev87/codingbuddy

Made for: Claude Code, OpenCode.

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.

agentmods badge for implement-tdd

README.md
[![agentmods](https://agentmods.dev/badge/commands/jeremydev87/codingbuddy/implement-tdd/github.svg)](https://agentmods.dev/commands/jeremydev87/codingbuddy/implement-tdd)
Your own site
<a href="https://agentmods.dev/commands/jeremydev87/codingbuddy/implement-tdd"><img src="https://agentmods.dev/badge/commands/jeremydev87/codingbuddy/implement-tdd/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for implement-tdd

Your own site · 80×15
<a href="https://agentmods.dev/commands/jeremydev87/codingbuddy/implement-tdd"><img src="https://agentmods.dev/badge/commands/jeremydev87/codingbuddy/implement-tdd.svg" alt="Reviewed on agentmods" width="80" 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 211 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00000 $0.00211
Opus 5.5 $0.00000 $0.00084
Sonnet 5.5 $0.00000 $0.00042
Haiku 4.5 $0.00000 $0.00021

Measured 1mo ago against content hash c5f3a9d71757, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

implement-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 1mo 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.

.opencode/commands/implement-tdd.md · 42 lines

What it actually says

Implement TDD Command

Description

Execute TDD workflow following Red → Green → Refactor cycle with .ai-rules standards.

Command

# Read TDD guidelines
READ packages/rules/.ai-rules/rules/augmented-coding.md

# Follow TDD cycle
IMPLEMENT using TDD cycle:
1. RED: Write failing test
2. GREEN: Minimal implementation
3. REFACTOR: Improve structure
4. COMMIT: After green phase

# Quality checks
MAINTAIN:
- TypeScript strict mode (no any)
- 90%+ test coverage
- Pure/impure function separation
- SOLID principles

# Run tests after each step
RUN tests and verify coverage

# Output in Korean
RESPOND in Korean (한국어)

Usage

# In OpenCode CLI
/implement-tdd

Quality Standards

  • No mocking principle
  • Real API integration only
  • Evidence-based testing
  • Incremental commits
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. 1mo ago First seen · 42 lines · 0 tokens per session scan A c5f3a9d71757

Subscribe to this mod's changes

implement-tdd is a command published in the GitHub repository JeremyDev87/codingbuddy (31 stars, last pushed 6mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 211 tokens. 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 2026-08-30.