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 agentmods add instructions/shenli/devtool-ax-kit/agents-mdgit clone --depth 1 https://github.com/shenli/devtool-ax-kitWhat 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 | $0.00241 | $0.00241 |
| Opus 5 | $0.00120 | $0.00120 |
| Sonnet 5 | $0.00048 | $0.00048 |
| Haiku 4.5 | $0.00024 | $0.00024 |
Grade A, and why
devtool-ax-kit 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 yesterday.
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
Agent instructions
Read the task prompt, then consult the relevant skill in skills/:
ax-task-designfor controlled task and fixture designax-verificationfor independent deterministic checksax-run-capturefor trajectories, checkpoints, receipts, and replayax-comparisonfor raw-vs-official surface comparisonsax-failure-reportfor evidence-led vendor reports
The methodology and outcome vocabulary are in docs/agent-ax-methodology.md
and docs/outcome-taxonomy.md. These are the repository sources of truth.
Invariants
- Never put real credentials, tokens, production data, or raw secret-bearing trajectories in the repository.
- Keep the verifier outside the agent-editable workspace and do not let the agent modify it.
- Record external writes only with a stable identity and authoritative receipt.
- Treat unavailable resources separately from functional failures.
- Do not repeat an uncertain external write; use pinned replay and the original receipt instead.
Validation
python3 -m unittest discover -s tests -v
python3 scripts/replay_experiment.py
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.
- yesterday First seen · 31 lines · 241 tokens per session scan A eda90fe8361b
devtool-ax-kit AGENTS.md is an instructions file published in the GitHub repository shenli/devtool-ax-kit (2 stars, last pushed 3d ago), licensed Apache-2.0. It adds 241 tokens to every session, about $0.0012 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 2026-08-31.
Other instructions, from other repositories
tinte CLAUDE.md
Instructions for Railly/tinte, covering tinte - agent-native design system infrastructure, what it does, tech stack, architecture and key directories.
coder AGENTS.md
AGENTS.md instructions for coder/coder, covering coder development guidelines, task-specific guidance, workflow, essential commands and repository guardrails.
coder CLAUDE.md
Claude Code instructions for coder/coder, a project described as: Secure environments for developers and their agents.
StatsPAI CLAUDE.md
Instructions for brycewang-stanford/StatsPAI, covering claude.md — statspai, 1. 项目定位, 2. 仓库结构, 3. 设计原则 and 4. 代码规范.
ailinter AGENTS.md
Instructions for ailinter/ailinter, covering agents.md, agent tl;dr, sub-agent delegation (ailinter scans), when to invoke @ailinter and what @ailinter does.
repo-seed AGENTS.md
Instructions for EricSanchezok/repo-seed, covering agents.md, repository governance, repository layout, code readability and commands.