Borrowing it
Nothing to install: this file belongs to ProjectSidewalk/SidewalkWebpage. 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/ProjectSidewalk/SidewalkWebpage/develop/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/ProjectSidewalk/SidewalkWebpageWrote 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/projectsidewalk/sidewalkwebpage/copilot-instructions)<a href="https://agentmods.dev/instructions/projectsidewalk/sidewalkwebpage/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/projectsidewalk/sidewalkwebpage/copilot-instructions/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/projectsidewalk/sidewalkwebpage/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/projectsidewalk/sidewalkwebpage/copilot-instructions.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 | $0.00500 | $0.00500 |
| Opus 5.5 | $0.00200 | $0.00200 |
| Sonnet 5.5 | $0.00100 | $0.00100 |
| Haiku 4.5 | $0.00050 | $0.00050 |
Grade A, and why
SidewalkWebpage 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 20d 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.
What it actually says
Project Sidewalk — Copilot review guidance
Crowdsourced sidewalk-accessibility mapping. Backend: Scala 3.9 + Play 3.0, Slick over Postgres/PostGIS. Frontend: vanilla JS ES modules bundled per page by Vite (no transpile), Twirl views. Schema via Play evolutions. Two i18n systems.
Don't duplicate the linters
Formatting and mechanical style are enforced by blocking CI gates: scalafmt, ESLint, Stylelint, HTMLHint, locale key-parity. Do NOT spend review comments on formatting, whitespace, quote style, semicolons, import order, or line length. Focus on correctness, domain rules, and the conventions in the path-scoped files.
Cross-cutting rules to flag
- Backend is the source of truth. Flag hardcoded frontend literals that mirror
backend domain values: label colors/icons, enum members, value ranges (min/max),
thresholds, and especially mappings between them. Colors must come from
util.misc.getLabelColors(labelType); other domain values from a/v3/api/...endpoint or a controller-injected view binding — never re-declared as a JS constant. Note: severity's good/ok/bad meaning is NOT fixed (positive vs negative features invert it), so flag any{1:'good',2:'ok',3:'bad'}-style literal. - Comments say WHY, not WHAT. Flag comments that restate the code, and changelog/narration comments that only make sense against the diff. Tell-tale words: "used to", "previously", "formerly", "replaces the old", "renamed to/from", "no longer". Flag TODO/FIXME with no linked issue.
- i18n: user-facing text changes need translations in all supported languages
(en, es, nl, zh-TW, de, pt-BR, en-US, en-NZ). See i18n instructions. EXCEPTION:
admin-only pages/routes (
app/views/admin/**,/admin/*) ship English-only — do not flag missing translations there. - Accessibility: new/changed UI must meet WCAG 2.1/2.2 AA — flag missing alt text, unlabeled controls, non-token colors with poor contrast, keyboard traps.
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.
- 20d ago Changed · -1 tokens per session b24323ab5db5
- 23d ago Changed · +5 tokens per session 277bafbde6ae
- 28d ago Changed f6b9f291dfc8
- 29d ago Changed 0af4ddfc48d6
- 2mo ago First seen · 31 lines · 496 tokens per session scan A 41f7b6ec2f54
SidewalkWebpage copilot-instructions.md is an instructions file published in the GitHub repository ProjectSidewalk/SidewalkWebpage (111 stars, last pushed today), licensed MIT. It adds 500 tokens to every session, about $0.0020 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 2026-08-30.
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