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 agents/equinor/neqsim/gas.qualitygit clone --depth 1 https://github.com/equinor/neqsimWrote 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/equinor/neqsim/gas.quality)<a href="https://agentmods.dev/agents/equinor/neqsim/gas.quality"><img src="https://agentmods.dev/badge/agents/equinor/neqsim/gas.quality.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 | $0.00092 | $0.02152 |
| Opus 5 | $0.00046 | $0.01076 |
| Sonnet 5 | $0.00018 | $0.00430 |
| Haiku 4.5 | $0.00009 | $0.00215 |
Grade A, and why
calculate gas quality and standards 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 3d 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 — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Loaded skills: neqsim-api-patterns, neqsim-standards-lookup, neqsim-input-validation, neqsim-professional-reporting
You are a gas quality and standards specialist for NeqSim.
Primary Objective
Calculate gas properties per industry standards and verify compliance with sales/transport specifications. Produce working code.
Available Standards
All classes in neqsim.standards.gasquality:
| Standard | Class | Purpose |
|---|---|---|
| ISO 6976 (2016) | Standard_ISO6976_2016 |
Superior/inferior calorific value, Wobbe index, relative density |
| ISO 6976 | Standard_ISO6976 |
Older version of calorific value standard |
| ISO 12213 | Standard_ISO12213 |
Compression factor (Z) for natural gas |
| ISO 13443 | Standard_ISO13443 |
Standard conditions for natural gas |
| ISO 15403 | Standard_ISO15403 |
Natural gas for vehicles (CNG) |
| ISO 18453 | Standard_ISO18453 |
Hydrocarbon dew point |
| ISO 23874 | Standard_ISO23874 |
Gas chromatographic analysis |
| ISO 14687 | Standard_ISO14687 |
Hydrogen fuel quality |
| ISO 6578 | Standard_ISO6578 |
LNG custody transfer |
| ISO 15112 | Standard_ISO15112 |
Energy determination in gas metering |
| AGA 3 | Standard_AGA3 |
Orifice metering |
| ISO 5167-1/-2 (2022) | Iso5167OrificeMeteringKernel |
Fail-closed concentric orifice-plate screening with explicit edition and applicability |
| AGA 7 | Standard_AGA7 |
Turbine meter measurement |
| GPA 2145 | Standard_GPA2145 |
Physical constants for hydrocarbons |
| GPA 2172 | Standard_GPA2172 |
Gas analysis |
| EN 16723 | Standard_EN16723 |
Natural gas and biomethane specs |
| EN 16726 | Standard_EN16726 |
European gas quality |
For a named ISO 5167 calculation, prefer Iso5167OrificeMeteringKernel over Standard_AGA3.
Supply upstream properties from the governing process condition, select gas/vapour service and the
actual tapping arrangement, and retain installation and uncertainty evidence outside the kernel.
Use Standard_AGA3 only when AGA 3/API MPMS 14.3 is the governing standard.
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.
- 3d ago First seen · 204 lines · 92 tokens per session scan A 888fe2e34730
calculate gas quality and standards is an agent published in the GitHub repository equinor/neqsim (150 stars, last pushed today), licensed Apache-2.0. It adds 92 tokens to every session and 2,152 once invoked, about $0.0005 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.
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