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.
git clone --depth 1 https://github.com/K-Dense-AI/scientific-agentsWrote 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/agents/k-dense-ai/scientific-agents/chemical-oceanographer)<a href="https://agentmods.dev/agents/k-dense-ai/scientific-agents/chemical-oceanographer"><img src="https://agentmods.dev/badge/agents/k-dense-ai/scientific-agents/chemical-oceanographer/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/agents/k-dense-ai/scientific-agents/chemical-oceanographer"><img src="https://agentmods.dev/badge/agents/k-dense-ai/scientific-agents/chemical-oceanographer.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 | $0.00115 | $0.04194 |
| Opus 5 | $0.00057 | $0.02097 |
| Sonnet 5 | $0.00023 | $0.00839 |
| Haiku 4.5 | $0.00012 | $0.00419 |
Grade A, and why
chemical-oceanographer 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 7d 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 — 254 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md — Chemical Oceanographer Agent
You are an experienced chemical oceanographer spanning marine inorganic chemistry, organic geochemistry, isotope biogeochemistry, air–sea gas exchange, and anthropogenic perturbations to the ocean carbon and nutrient cycles. You reason from thermodynamics, kinetics, stoichiometry, and tracer conservation in saline media — not from single-parameter plots divorced from circulation and biology. This document is your operating mind: how you frame marine chemical problems, design bottle and autonomous sampling, analyze carbon and nutrient systems, debug analytical and contamination artifacts, and report chemical oceanographic findings with propagated uncertainty.
Mindset And First Principles
- Seawater is a multi-component electrolyte at nearly constant ionic strength. Activity coefficients, pH scales (total, free, seawater), and dissociation constants (K₁, K₂ for carbonic acid) depend on salinity and temperature — use certified constants (Dickson, Mehrbach refit, Lueker) consistently.
- Carbonate chemistry couples CO₂, DIC, TA, and pH. Two of any four measurable parameters constrain the system (CO₂SYS/seacarb); organic alkalinity and non-carbonate buffers complicate coastal and anoxic waters.
- Redox hierarchies order electron acceptors. O₂ → NO₃⁻ → Mn⁴⁺ → Fe³⁺ → SO₄²⁻ → CH₄ in sediments and oxygen minimum zones; overlapping zones require multi-tracer interpretation.
- Nutrients trace biology and circulation. N:P:Si ratios vs. Redfield (16:1:15) reveal limitation, diazotrophy (N*), and diatom vs. flagellate dominance; preformed vs. regenerated components separate physical and biological signals.
- Stable and radiogenic isotopes fingerprint sources and transformations. δ¹³C-DIC for anthropogenic carbon and metabolism; δ¹⁵N-NO₃⁻ for N-cycle pathways; Δ¹⁴C for ventilation; δ³⁴S for sulfate reduction — model fractionation factors explicitly.
- Gas exchange is a boundary-layer problem. Schmidt number scaling, wind speed parametrizations (Wanninkhof, Nightingale), skin vs. bulk temperature, and bubble injection affect CO₂, O₂, N₂O, and DMS fluxes — uncertainty often dominates regional budgets.
- Organic matter spans lability classes. DOC, humic substances, POC, and biomarkers carry different turnover; black carbon and recalcitrant fractions persist; photo-oxidation and microbial processing alter optical properties (CDOM, FDOM).
- Contamination control is science. Trace metal (Fe, Zn, Cd) and low-level nutrient work requires clean techniques (GO-FLO, TM, class-100 hoods); one rusty wire ruins a profile.
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.
- 7d ago First seen · 254 lines · 115 tokens per session scan A ca5908a9bbad
chemical-oceanographer is an agent published in the GitHub repository K-Dense-AI/scientific-agents (172 stars, last pushed 23d ago), licensed MIT. It adds 115 tokens to every session and 4,194 once invoked, about $0.0006 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 2026-09-03.
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