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/cesarferreira/stax/agents-mdgit clone --depth 1 https://github.com/cesarferreira/staxWrote 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/cesarferreira/stax/agents-md)<a href="https://agentmods.dev/instructions/cesarferreira/stax/agents-md"><img src="https://agentmods.dev/badge/instructions/cesarferreira/stax/agents-md.svg" alt="Measured on agentmods" 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 | $0.01828 | $0.01828 |
| Opus 5 | $0.00914 | $0.00914 |
| Sonnet 5 | $0.00366 | $0.00366 |
| Haiku 4.5 | $0.00183 | $0.00183 |
Grade A, and why
stax 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 5d 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 — 69 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Harness: stax-dev
Goal: Accelerate stax feature development and bug fixing via a git-native worktree → plan → implement → review → verify → (optional) benchmark → commit → draft-PR pipeline with a bounded repair loop.
Trigger: For any code change to the stax CLI (new commands, flags, bugfixes, refactors, behavior changes), run the /stax-dev prompt. It orchestrates the planner, codex, claude-reviewer, verifier, benchmarker, and release-manager agents (.pi/agents/) via the subagent tool. Direct usage/architecture questions don't need the pipeline. Each task runs in its own worktree on a stacked branch; commit + draft PR are automatic when the scoped draft gate is green; merging to main is never automatic and promoting a draft to ready-for-review is HITL-gated.
Change History:
| Date | Change | Target | Reason |
|---|---|---|---|
| 2026-07-25 | Initial harness build (5 agents, 5 skills, /stax-dev orchestrator) |
All | New harness |
| 2026-07-25 | Git-native evolution: added benchmarker (optional perf gate) + stax-benchmark skill; worktree-per-task + stacked branch; auto commit-on-green + auto draft PR; hard "never merge to main" rule |
benchmarker.md, stax-benchmark/, release-manager.md, codex.md, stax-release/, stax-dev.md | Adopt git-native workflow constraints; keep verifier as mandatory correctness gate |
| 2026-07-28 | Added fallbackModels: claude-bridge/claude-sonnet-4-6 to the four cursor/composer-2.5 agents so a provider outage (quota/auth/timeout) auto-routes instead of stalling the run; codex also falls back to openai-codex/gpt-5.6-terra. Extended benchmarker skip rule to cover pure delegation/deletion diffs with no new local hot-path work |
codex.md, verifier.md, benchmarker.md, release-manager.md | Cursor was down + OpenAI-Codex usage-limited mid-run (stax-dev-03), forcing manual model overrides; benchmarker also burned time trying to bench a no-local-compute change |
| 2026-08-26 | Split verification into a fast scoped draft gate and a full CI/ready-for-review gate | AGENTS.md, verifier.md, stax-verify/, stax-dev.md | Avoid repeating the process-heavy full integration suite in every isolated worktree while retaining full validation before review or merge |
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.
- 5d ago First seen · 69 lines · 1,828 tokens per session scan A a884381c1d76
stax AGENTS.md is an instructions file published in the GitHub repository cesarferreira/stax (124 stars, last pushed 2d ago), licensed MIT. It adds 1,828 tokens to every session, about $0.0091 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 2026-08-30.
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Node copilot-instructions.md
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