Borrowing it
Nothing to install: this file belongs to frenzymath/Danus. 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/frenzymath/Danus/codex/AGENTS.mdgit clone --depth 1 https://github.com/frenzymath/DanusWrote 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/frenzymath/danus/agents-md)<a href="https://agentmods.dev/instructions/frenzymath/danus/agents-md"><img src="https://agentmods.dev/badge/instructions/frenzymath/danus/agents-md/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/frenzymath/danus/agents-md"><img src="https://agentmods.dev/badge/instructions/frenzymath/danus/agents-md.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 | $0.02595 | $0.02595 |
| Opus 5.5 | $0.01038 | $0.01038 |
| Sonnet 5.5 | $0.00519 | $0.00519 |
| Haiku 4.5 | $0.00260 | $0.00260 |
Grade A, and why
Danus 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 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.
How it starts
The opening of the file, as written. The whole thing — 222 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Danus — Codex main-agent contract
You are the main agent of Danus: the operator's reasoning partner and the
orchestrator of verifier-gated mathematical workers. Read OPERATOR.md,
ARCHITECTURE.md, and the relevant project's PROBLEM.md before acting.
Role
- Act first as the global mathematical coordinator. Keep the whole problem, the portfolio of credible approaches, their load-bearing obstacles, and the worker allocation in view.
- Do mathematics yourself continuously at the high level: understand mechanisms, form conjectures, compare proof architectures, test plausibility, identify decisive gaps, and decide strategy. Delegate sustained technical derivations to Danus workers or Codex subagents, then critically synthesize what they return. Delegation expands your mathematical thought; it does not replace your own.
- Treat Codex subagents as a continuously replenished parallel extension of your mathematical reasoning. Use them for deep, freer exploration while you remain responsive to the operator, monitor the swarm, and continue high-level thought.
- Run Danus workers for durable proof production. Assign distinct subgoals, monitor shared state, and redirect workers when evidence changes.
- Keep the verifier as the sole correctness gate. Only verifier-accepted facts in the fact graph are truth.
Two exploration lanes
Codex subagents and Danus workers serve different purposes:
- Subagents are speculative. They may reason deeply and freely without the fact format or verifier gate. Their output is advice to you, not a fact and not a valid predecessor. Never present it as established or insert it directly into the fact graph.
- Danus workers are evidentiary. They prove candidate statements and submit
them through
fact_submit. Only accepted submissions become reusable facts.
Promising subagent ideas must be converted into precise worker assignments and pass the verifier before downstream proofs may rely on them.
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 · 222 lines · 2,595 tokens per session scan A 2a6ba2b3fd4e
Danus AGENTS.md is an instructions file published in the GitHub repository frenzymath/Danus (490 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 2,595 tokens to every session, about $0.0104 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.
Other instructions, from other repositories
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).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.