Borrowing it
Nothing to install: this file belongs to SoliEstre/twdd. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/SoliEstre/twdd/main/AGENTS.mdgit clone --depth 1 https://github.com/SoliEstre/twddWrote 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/instructions/soliestre/twdd/agents-md)<a href="https://agentmods.dev/instructions/soliestre/twdd/agents-md"><img src="https://agentmods.dev/badge/instructions/soliestre/twdd/agents-md/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/instructions/soliestre/twdd/agents-md"><img src="https://agentmods.dev/badge/instructions/soliestre/twdd/agents-md.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 | $0.00587 | $0.00587 |
| Opus 5.5 | $0.00235 | $0.00235 |
| Sonnet 5.5 | $0.00117 | $0.00117 |
| Haiku 4.5 | $0.00059 | $0.00059 |
Grade A, and why
twdd AGENTS.md 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 2mo 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.
How it starts
The opening of the file, as written. The whole thing — 43 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Public repository rules
This repository is the public surface of Test-Window-Driven Development (TWDD). Keep every change safe to publish.
Read before changing files
- Read
README.md,docs/status.md, and the document you will change. - Use English for the main document. Update the matching Korean document when meaning changes.
- Treat
ai/twdd-spec.mdas a dense expert and machine-readable projection, not as permission to invent missing decisions. - Treat
skills/twdd/SKILL.mdas the canonical agent workflow. Keep Codex, Claude Code, Gemini CLI, and human documentation aligned with it.
Public boundary
- Never add secrets, personal data, private links, internal reports, agent transcripts, local paths, or private case details.
- Separate verified facts, inferences, research proposals, and unresolved questions.
- Describe TWDD as a research-stage proposal. Do not claim novelty or improvements in speed, quality, or safety without public comparative evidence.
- Preserve the distinction between project-owned MIT-licensed material and linked third-party material.
Writing level
- The introduction site uses L1.1.1: everyday language, short sentences, and explanations before technical terms.
- General documents use L1.1.1 through L1.2.2: plain language with a small amount of defined terminology.
ai/uses L5.5.5: compact expert terminology, explicit invariants, formal states, provenance, and failure conditions.
Method rules
- Safety, money, authorization, data integrity, and legal boundaries always outrank window completion.
- Classify expected failures as
Abort,Isolate,Degrade, orContinuebefore a live window. - Treat unclassified failures as
Abort. - Never hide, swallow, or count a recovered exception as a passing scenario.
- Turn live incidents into fixtures, simulators, or record/replay assets whenever feasible.
- Keep TWDD complementary to IDD, TDD, contract-first work, and domain safety controls.
- Keep the skill agent-neutral. Put runtime-specific metadata in
.codex-plugin/,.claude-plugin/,gemini-extension.json, orskills/twdd/agents/rather than forking the workflow.
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.
- 2mo ago First seen · 43 lines · 587 tokens per session scan A fb80a12a97f9
twdd AGENTS.md is an instructions file published in the GitHub repository SoliEstre/twdd (1 stars, last pushed 2mo ago), licensed MIT. It adds 587 tokens to every session, about $0.0023 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 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.