Borrowing it
Nothing to install: this file belongs to stainless-code/codemap. 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/stainless-code/codemap/main/.agents/skills/writing-agents-config/SKILL.mdgit clone --depth 1 https://github.com/stainless-code/codemapWrote 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/stainless-code/codemap/writing-agents-config)<a href="https://agentmods.dev/skills/stainless-code/codemap/writing-agents-config"><img src="https://agentmods.dev/badge/skills/stainless-code/codemap/writing-agents-config/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/stainless-code/codemap/writing-agents-config"><img src="https://agentmods.dev/badge/skills/stainless-code/codemap/writing-agents-config.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Prompt Injection · line 24 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 36 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
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 | $0.00054 | $0.01416 |
| Opus 5.5 | $0.00022 | $0.00566 |
| Sonnet 5.5 | $0.00011 | $0.00283 |
| Haiku 4.5 | $0.00005 | $0.00142 |
Grade A, and why
writing-agents-config 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 1mo 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 — 81 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Writing agents config
Read first: writing-great-skills — invocation, information hierarchy, completion criteria, pruning, failure modes.
This repo adds Cursor rules (Tier 1/2/3) on top of a skills-only agent model — always-on STOP rules where cross-turn non-negotiables beat description-only triggers.
Tier framework: agents-tier-system · Layout: agents-first-convention.
Attachment decision tree
- Every turn, non-negotiable? → Tier 1 (
alwaysApply: true) — ≤40 lines STOP + pointers - File-scoped pattern? → Tier 2 (
globs:) — thin priming; depth in paired skill - Intent-only workflow? → Tier 3 or skill-only — no always-on tax (bug diagnosis, doc sweeps, structural queries)
- User slash-command only? →
disable-model-invocation: truewrapper → model skill(s)
Pairing checklist
| Check | Pass when |
|---|---|
| Priming size | Rule ~10–40L; procedures in skill or sibling |
| Bidirectional | Rule → skill in Reference; skill → rule where paired |
| No duplication | SSOT in skill; rule has STOP rows or pointers only |
| Inventory drift | Tier-1 set discovered via the frontmatter audit in agents-tier-system rule — not hardcoded name lists in README/skill |
| Triggers | Per writing-great-skills — one branch per intent in description |
SKILL.md size tiers
Rules cap at ≤40L; skills use progressive disclosure (writing-great-skills sprawl). Line count is a hygiene signal, not a hard gate — split for structure, not to hit a number.
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.
- 1mo ago First seen · 81 lines · 54 tokens per session scan A cbec72e15670
writing-agents-config is a skill published in the GitHub repository stainless-code/codemap (8 stars, last pushed yesterday), licensed MIT. It adds 54 tokens to every session and 1,416 once invoked, about $0.0002 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.
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