Borrowing it
Nothing to install: this file belongs to NiobiumInc/niobium-client. 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/NiobiumInc/niobium-client/main/CLAUDE.mdgit clone --depth 1 https://github.com/NiobiumInc/niobium-clientWrote 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/niobiuminc/niobium-client/claude-md)<a href="https://agentmods.dev/instructions/niobiuminc/niobium-client/claude-md"><img src="https://agentmods.dev/badge/instructions/niobiuminc/niobium-client/claude-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/niobiuminc/niobium-client/claude-md"><img src="https://agentmods.dev/badge/instructions/niobiuminc/niobium-client/claude-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 | $0.00012 | $0.00012 |
| Opus 5 | $0.00006 | $0.00006 |
| Sonnet 5 | $0.00002 | $0.00002 |
| Haiku 4.5 | $0.00001 | $0.00001 |
Grade A, and why
niobium-client CLAUDE.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 10d 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.
This is a copy
100% identical to datahub CLAUDE.md — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
CLAUDE.md
@./AGENTS.md
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.
- 10d ago First seen · 4 lines · 12 tokens per session scan A b69b61035366
niobium-client CLAUDE.md is an instructions file published in the GitHub repository NiobiumInc/niobium-client (20 stars, last pushed yesterday), licensed Apache-2.0. It adds 12 tokens to every session, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to datahub CLAUDE.md, differing in 2 lines, and is treated as a copy.
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