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/fastcode555/flutter_tailwind/copilot-instructionsgit clone --depth 1 https://github.com/fastcode555/flutter_tailwindWhat 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 | $0.00487 | $0.00487 |
| Opus 5 | $0.00244 | $0.00244 |
| Sonnet 5 | $0.00097 | $0.00097 |
| Haiku 4.5 | $0.00049 | $0.00049 |
Grade A, and why
flutter_tailwind copilot-instructions.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
Copilot / AI instructions — flutter_tailwind
This is a Flutter package (a TailwindCSS-style chained-API UI library), not an app. Library code is in lib/; runnable demos are in example/.
⭐ Before writing any flutter_tailwind UI code, read doc/AI_REFERENCE.md
The library's public surface is a chained DSL, e.g. 'Hello'.text.red.f16.bold.mk, container.p16.rounded8.child(w), row.spacing16.children([...]). Every styling token is a predefined getter — you may only use tokens that exist. Do not invent a token by pattern (e.g. .w73, .p13, .maxLine(2) may not exist); when a value isn't in the predefined set, use the parameterized fallback method (.w(73), .maxLines(2)).
The single authoritative API cheat-sheet is doc/AI_REFERENCE.md. It contains:
- exact token vocabulary with numeric rules (which
wN/pN/fN/… actually exist), - the entry-point → terminator map (
.mkvs.child(w)vs.children([...])vs.click(...)vs.builder(...)— the most common mistake), - the builder → supported-style-axis matrix.
README.md, guide.md, and .cursor/rules/* are human-oriented and may be stale. When any of them conflicts with doc/AI_REFERENCE.md or the source, the source wins, then doc/AI_REFERENCE.md.
A few hard rules (full detail in the reference)
- Row/Column/Wrap already mix in size/padding/color/spacing — do not wrap them in a
containerjust to set background/padding/size. - Prefer a predefined token over its parameterized form (
.p16, not.p(16)). - For uniform gaps between children use
.spacing16on the parent, not manualh16/w8spacers. - There is no
build_runnerin this package;.g.dartfiles are hand-writtenpartfiles. - Run
flutter analyzebefore considering UI code done.
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 · 23 lines · 487 tokens per session scan A ec7ef1b10ed7
flutter_tailwind copilot-instructions.md is an instructions file published in the GitHub repository fastcode555/flutter_tailwind (10 stars, last pushed 29d ago), licensed BSD-3-Clause. It adds 487 tokens to every session, about $0.0024 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.
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