PDF-Writer is a C++ library for creating, modifying, and parsing PDF documents. It is for developers who need to work with PDF files in C++.
Borrowing it
Nothing to install: this file belongs to galkahana/PDF-Writer. 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/galkahana/PDF-Writer/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/galkahana/PDF-WriterWrote 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/galkahana/pdf-writer/copilot-instructions)<a href="https://agentmods.dev/instructions/galkahana/pdf-writer/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/galkahana/pdf-writer/copilot-instructions.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 5.1 | $0.01464 | $0.01464 |
| Opus 5 | $0.00732 | $0.00732 |
| Sonnet 5 | $0.00293 | $0.00293 |
| Haiku 4.5 | $0.00146 | $0.00146 |
Grade A, and why
PDF-Writer 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 7d 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 — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GitHub Copilot Repository Instructions
You are reviewing pull requests for the PDF-Writer repository (C++). Prioritize correctness, regressions, security, and missing tests over style nits.
Review Goals
- Find real defects and risky behavior changes first.
- Prefer high-signal findings over many minor comments.
- Keep feedback actionable and specific.
Severity System (use exactly these labels)
- 🔴 Critical: security issue, data loss/corruption, crash in common flow, major functional break.
- 🟠 High: likely bug or regression with significant user impact.
- 🟡 Medium: correctness risk in edge cases, maintainability issue likely to cause future defects.
- 🔵 Low: minor issue, readability/consistency concern with low risk.
- ⚪ Info: optional non-blocking suggestion.
PR Causality Gate (mandatory)
- For every finding, classify causality as one of:
- Introduced-by-PR
- Exposed-by-PR (pre-existing defect made newly reachable by this PR in normal flow)
- Pre-existing-Unchanged
- Only Introduced-by-PR findings are blocking by default.
- Exposed-by-PR findings may be blocking only when the PR makes them newly reachable in normal use.
- Pre-existing-Unchanged findings are never blocking in this repository workflow unless the user explicitly asks for a broad audit.
- If causality cannot be demonstrated from changed code and call path, downgrade severity by one level and state uncertainty.
Baseline Consistency Rule
- Do not request changes for behavior that is consistent with the base branch unless the PR explicitly claims to fix that behavior.
- If the same pattern exists in untouched code, treat it as consistency debt and report as optional follow-up (non-blocking) unless asked to include cleanup.
- Do not escalate severity solely because code is old-style, manual-memory, or non-modern if it matches established repository patterns.
Decision Rules
- Request changes: any unresolved 🔴 Critical or 🟠 High finding.
- Comment: only 🟡 Medium findings, uncertainty requiring clarification, or testing gaps that should be discussed.
- Approve with follow-ups: only 🔵 Low / ⚪ Info findings and no blocking risk.
- Approve: no actionable findings.
- Approval override: if there are no Introduced-by-PR (or newly Exposed-by-PR) 🔴/🟠 findings, do not request changes.
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.
- 7d ago First seen · 115 lines · 1,464 tokens per session scan A c47da2f878a3
PDF-Writer copilot-instructions.md is an instructions file published in the GitHub repository galkahana/PDF-Writer (1,022 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 1,464 tokens to every session, about $0.0073 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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