Borrowing it
Nothing to install: this file belongs to Garudex-Labs/caracal. 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/Garudex-Labs/caracal/main/.github/instructions/file-header.instructions.mdgit clone --depth 1 https://github.com/Garudex-Labs/caracalWrote 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/garudex-labs/caracal/file-header)<a href="https://agentmods.dev/instructions/garudex-labs/caracal/file-header"><img src="https://agentmods.dev/badge/instructions/garudex-labs/caracal/file-header/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/garudex-labs/caracal/file-header"><img src="https://agentmods.dev/badge/instructions/garudex-labs/caracal/file-header.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 | $0.00249 | $0.00249 |
| Opus 5.5 | $0.00100 | $0.00100 |
| Sonnet 5.5 | $0.00050 | $0.00050 |
| Haiku 4.5 | $0.00025 | $0.00025 |
Grade A, and why
caracal file-header.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 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.
What it actually says
File Header
- Applies to every source file in the codebase.
Required
- Every source file must begin with this exact header (adapted to the file's comment syntax):
Copyright (C) 2026 Garudex Labs. All Rights Reserved. Caracal, a product of Garudex Labs {One short, clear one-line description of the file} - The description must be a single sentence: concise and direct.
- Describe what the file is.
- Preserve exact spacing: two spaces after
All Rights Reserved. - Include the blank line between the copyright block and the description.
- Adapt the comment syntax to match the file's language (e.g.,
"""for Python,//for JS/TS).
Forbidden
- Must not omit the header from any source file.
- Must not add metadata, version notes, or author lines inside the header block.
- Must not add blank lines inside the copyright block itself.
- Must not describe what was changed or why the file exists.
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 · 29 lines · 249 tokens per session scan A dc72d1b878a3
caracal file-header.instructions.md is an instructions file published in the GitHub repository Garudex-Labs/caracal (225 stars, last pushed yesterday), licensed Apache-2.0. It adds 249 tokens to every session, about $0.0010 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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