tdd-test-writer-agent

tdd-test-writer-agent is an agent for Claude Code, Codex from IgniteUI/igniteui-angular. It costs 35 tokens per session (1,847 once invoked), scanned A, original, no licence file.

A coding agent that writes unit tests before production code exists. It handles the RED phase of test-driven development (TDD), a method where tests are written before the code they check.

In plain words
What is it for?
Use it to create failing tests for new Ignite UI for Angular features and bug fixes.
Why use it?
It gives a feature or bug fix a clear expected behavior before implementation begins.

Agent for Claude CodeCodex

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to create failing tests for new Ignite UI for Angular features and bug fixes.

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Install with agentmods
npx agentmods add agents/igniteui/igniteui-angular/tdd-test-writer-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.

Clone the repo
git clone --depth 1 https://github.com/IgniteUI/igniteui-angular

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-test-writer-agent

README.md
[![agentmods](https://agentmods.dev/badge/agents/igniteui/igniteui-angular/tdd-test-writer-agent/github.svg)](https://agentmods.dev/agents/igniteui/igniteui-angular/tdd-test-writer-agent)
Your own site
<a href="https://agentmods.dev/agents/igniteui/igniteui-angular/tdd-test-writer-agent"><img src="https://agentmods.dev/badge/agents/igniteui/igniteui-angular/tdd-test-writer-agent/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-test-writer-agent

Your own site · 80×15
<a href="https://agentmods.dev/agents/igniteui/igniteui-angular/tdd-test-writer-agent"><img src="https://agentmods.dev/badge/agents/igniteui/igniteui-angular/tdd-test-writer-agent.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,847 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 unknown 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 $0.00035 $0.01847
Opus 5.5 $0.00014 $0.00739
Sonnet 5.5 $0.00007 $0.00369
Haiku 4.5 $0.00003 $0.00185

Measured 25d ago against content hash 307b6a7928da, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tdd-test-writer-agent 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 25d 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.

.agents/agents/tdd-test-writer-agent.md · 184 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 25d ago Changed · +1 lines 307b6a7928da
  2. 1mo ago First seen · 183 lines · 35 tokens per session scan A ee2526d74232

Subscribe to this mod's changes

tdd-test-writer-agent is an agent published in the GitHub repository IgniteUI/igniteui-angular (599 stars, last pushed today), with no licence file. It adds 35 tokens to every session and 1,847 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-30.