tdd

tdd is a skill for Claude Code, Codex from mattmre/EVOKORE-MCP-PUBLIC. It costs 25 tokens per session (334 once invoked), scanned A, original, MIT.

A test-driven development tool that requires writing a failing test first, implementing enough code to pass it, and then cleaning up the result. TDD means developing software in this test-first cycle.

In plain words
What is it for?
Use it when implementing features that should be developed through failing tests, passing tests, and refactoring.
Why use it?
It connects each implementation change to a test and helps expose incorrect behavior early.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when implementing features that should be developed through failing tests, passing tests, and refactoring.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mattmre/evokore-mcp-public/tdd
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.

Any agent
npx skills add mattmre/EVOKORE-MCP-PUBLIC --skill tdd
Clone the repo
git clone --depth 1 https://github.com/mattmre/EVOKORE-MCP-PUBLIC

Made for: Claude Code, Codex.

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 tdd

README.md
[![agentmods](https://agentmods.dev/badge/skills/mattmre/evokore-mcp-public/tdd/github.svg)](https://agentmods.dev/skills/mattmre/evokore-mcp-public/tdd)
Your own site
<a href="https://agentmods.dev/skills/mattmre/evokore-mcp-public/tdd"><img src="https://agentmods.dev/badge/skills/mattmre/evokore-mcp-public/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 tdd

Your own site · 80×15
<a href="https://agentmods.dev/skills/mattmre/evokore-mcp-public/tdd"><img src="https://agentmods.dev/badge/skills/mattmre/evokore-mcp-public/tdd.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 334 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 $0.00025 $0.00334
Opus 5 $0.00013 $0.00167
Sonnet 5 $0.00005 $0.00067
Haiku 4.5 $0.00003 $0.00033

Measured 7d ago against content hash 8315cf860d98, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, 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 7d 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.

SKILLS/ORCHESTRATION FRAMEWORK/commands/tdd/SKILL.md · 47 lines

What it actually says

/tdd — Test-Driven Development

Enforces the Red-Green-Refactor TDD cycle: write failing tests first, implement to pass, then refactor.

Usage

/tdd "implement TrustLedger.record() method"

The TDD Cycle

Red (Write failing test)

Write a test that describes the desired behavior. Run it — it must fail:

npx vitest run --reporter=verbose tests/integration/TrustLedger.test.ts

Green (Make it pass)

Write the minimum implementation to make the test pass. No more.

Refactor (Clean up)

Clean up both the implementation and the test without changing behavior. Re-run tests — still green.

Done Criteria

  • Tests written BEFORE implementation code
  • All tests pass: npx vitest run
  • TypeScript compiles: npx tsc --noEmit
  • No implementation code without a corresponding test

Integration

  • Pairs with /verify-quality to compute truth score
  • AGT-017 (Quality Engineer) tracks test-to-code ratio
  • eval-harness PAT-002 measures test-before-commit compliance
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. 7d ago First seen · 47 lines · 25 tokens per session scan A 8315cf860d98

Subscribe to this mod's changes

tdd is a skill published in the GitHub repository mattmre/EVOKORE-MCP-PUBLIC (3 stars, last pushed 3mo ago), licensed MIT. It adds 25 tokens to every session and 334 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 2026-09-03.

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