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.
npx skills add jxoesneon/Ciel --skill test-driven-developmentgit clone --depth 1 https://github.com/jxoesneon/CielWrote 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.
[](https://agentmods.dev/skills/jxoesneon/ciel/test-driven-development)<a href="https://agentmods.dev/skills/jxoesneon/ciel/test-driven-development"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/test-driven-development/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.
<a href="https://agentmods.dev/skills/jxoesneon/ciel/test-driven-development"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/test-driven-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 5.1 | $0.00020 | $0.00504 |
| Opus 5 | $0.00010 | $0.00252 |
| Sonnet 5 | $0.00004 | $0.00101 |
| Haiku 4.5 | $0.00002 | $0.00050 |
Grade A, and why
test-driven-development 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 9d 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.
What it actually says
CIEL ADAPTATION: Test-Driven Development (TDD)
This skill enforces CIEL's "Iron Law" of engineering: no production code without a failing test first.
Integration Context
Adapted from ~/.agents/skills/test-driven-development/. This is a foundation-level mandate for all CIEL-orchestrated engineering.
The Iron Law
NO PRODUCTION CODE WITHOUT A FAILING TEST FIRST.
If you wrote code before a test: Delete it. Start over.
The Cycle
- RED: Write one minimal test for the desired behavior.
- Verify RED: Run the test and confirm it fails for the expected reason.
- GREEN: Write the minimal code required to pass the test.
- Verify GREEN: Run the test and confirm it passes.
- REFACTOR: Clean up the code while keeping the test green.
Orchestration Logic
1. Pre-Task Triage
Before any engineering sub-task, the orchestration skill must ensure a TDD strategy is defined.
2. Council Gate
For high-risk features, the Council of Five (specifically Safety and Evolution) will review the test plan before implementation starts.
3. Verification
A task is not "complete" until:
- Every new function/method has a corresponding test.
- All tests pass in the target environment.
- Output is pristine (no warnings/errors).
Original Documentation preserved at source.
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.
- 9d ago First seen · 69 lines · 20 tokens per session scan A c211d4e7fb02
test-driven-development is a skill published in the GitHub repository jxoesneon/Ciel (1 stars, last pushed 5d ago), licensed Apache-2.0. It adds 20 tokens to every session and 504 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.
Other skills, from other repositories
tdd-workflow
Use this skill when writing new features, fixing bugs, or refactoring code. Enforces test-driven development with 80%+ coverage including unit, integration, and E2E tests.
tdd-guide
Test-Driven Development specialist enforcing write-tests-first methodology. Use PROACTIVELY when writing new features, fixing bugs, or refactoring code. Ensures 80%+ test coverage.
agent-tdd-london-swarm
Agent skill for tdd-london-swarm - invoke with $agent-tdd-london-swarm.
ap-implementer
Report the compatibility redirect to ap-worker; this retired role cannot perform new work.
superpowers
Use when the user wants a disciplined software development workflow with design-first planning, implementation plans, TDD, systematic debugging, code review, or verification-before-completion, adapted from obra/superpowers.
V3 Security Overhaul
Complete security architecture overhaul for claude-flow v3. Addresses critical CVEs (CVE-1, CVE-2, CVE-3) and implements secure-by-default patterns. Use for security-first v3 implementation.