Borrowing it
Nothing to install: this file belongs to CBirkbeck/AINTLIB. 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/CBirkbeck/AINTLIB/main/AGENTS.mdgit clone --depth 1 https://github.com/CBirkbeck/AINTLIBWrote 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/cbirkbeck/aintlib/agents-md)<a href="https://agentmods.dev/instructions/cbirkbeck/aintlib/agents-md"><img src="https://agentmods.dev/badge/instructions/cbirkbeck/aintlib/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/cbirkbeck/aintlib/agents-md"><img src="https://agentmods.dev/badge/instructions/cbirkbeck/aintlib/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 | $0.02270 | $0.02270 |
| Opus 5.5 | $0.00908 | $0.00908 |
| Sonnet 5.5 | $0.00454 | $0.00454 |
| Haiku 4.5 | $0.00227 | $0.00227 |
Grade A, and why
AINTLIB 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 2mo 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- AINTLIB CLAUDE.md — 97% identical, 2 lines differ
How it starts
The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AINTLIB — rules for AI sessions
AINTLIB is an AI-reviewed number-theory library — built like mathlib, but maintained by AI
agents and tolerant of work-in-progress. It is one Lake workspace with every NT project side
by side under projects/<P>/, all on a single mathlib that is bumped to latest daily. Because
it is one build unit, any result can import any other — that is the entire point.
Work happens across machines, through GitHub (CBirkbeck/AINTLIB). Identify your role below and
follow that section.
Structure
main— the integrated library. Always builds. Bumped to latest mathlib daily and centrally.sorryis allowed here as an explicit work-in-progress marker.dev/<project>branches — each project's frontier, where new theorems are proved. Each carries its own dev ticket system.- Two ticket systems. Dev tickets (per project, on its
dev/<project>branch) track new math. Cleanup tickets (onmain) are GitHub issues labelled by lane (see Worker system below) and track dedup / golf / style / cross-linking / generalisation / proof-decomposition. The handoff between them is merging a dev branch intomain.
Your working copy — all workers share ONE clone on this machine
Do not clone AINTLIB per worker. Use a git worktree per dev branch, so every worker runs in
parallel off the same .git:
# once, from the main AINTLIB checkout (which stays on `main`):
git worktree add ../aintlib-adic dev/adic-spaces
git worktree add ../aintlib-padic dev/padic
git worktree add ../aintlib-hasse dev/hasse-weil
Each worker then lives in its own directory (../aintlib-<proj>) on its own branch — separate files
and a separate .lake build, fully isolated, no clobbering. In your worktree: lake exe cache get,
then build. Commit on your dev branch; PR to main when a ticket is done; git rebase main after
the daily bump (your worktree shares all of main's refs locally — no fetch needed). Until AINTLIB
publishes its own olean cache, the first build in each worktree compiles the project tree from
source once (mathlib still comes from cache); after that it is incremental.
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.
- 2mo ago First seen · 128 lines · 2,270 tokens per session scan A 715d47b88a97
AINTLIB AGENTS.md is an instructions file published in the GitHub repository CBirkbeck/AINTLIB (8 stars, last pushed 4d ago), licensed Apache-2.0. It adds 2,270 tokens to every session, about $0.0091 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 2026-08-31.
AINTLIB AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| AINTLIB AGENTS.mdCBirkbeck/AINTLIB | Instructions file | 8 | 4d ago | Apache-2.0 | A | 2,270 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,649 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,093 | GitHub Copilot |
| vscode ai-customization.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 1,907 | GitHub Copilot |