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/domesday86/domesdayduplicator/agents-mdgit clone --depth 1 https://github.com/Domesday86/DomesdayDuplicatorWrote 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/domesday86/domesdayduplicator/agents-md)<a href="https://agentmods.dev/instructions/domesday86/domesdayduplicator/agents-md"><img src="https://agentmods.dev/badge/instructions/domesday86/domesdayduplicator/agents-md.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 | $0.10278 | $0.10278 |
| Opus 5 | $0.05139 | $0.05139 |
| Sonnet 5 | $0.02056 | $0.02056 |
| Haiku 4.5 | $0.01028 | $0.01028 |
Grade A, and why
DomesdayDuplicator AGENTS.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 4d 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.
The source is not reproduced here
Licensed GPL-3.0
The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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.
- 4d ago First seen · 682 lines · 10,278 tokens per session scan A 349cc1b3e714
DomesdayDuplicator AGENTS.md is an instructions file published in the GitHub repository Domesday86/DomesdayDuplicator (321 stars, last pushed yesterday), licensed GPL-3.0. It adds 10,278 tokens to every session, about $0.0514 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.
Other instructions, from other repositories
allo AGENTS.md
AGENTS.md instructions for cornell-zhang/allo, covering building, testing, code style and don'ts.
livehd AGENTS.md
AGENTS.md instructions for masc-ucsc/livehd, covering agents.md, build & test, key directories, tree library and lhd cli (eprp underneath).
livehd CLAUDE.md
Claude Code instructions for masc-ucsc/livehd: See AGENTS.md — all coding-agent guidance (build/test, sibling repos, contracts, debugging tips) lives there so every agent shares the same doc.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.