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 skills add equinor/neqsim --skill neqsim-troubleshootinggit 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/skills/equinor/neqsim/neqsim-troubleshooting)<a href="https://agentmods.dev/skills/equinor/neqsim/neqsim-troubleshooting"><img src="https://agentmods.dev/badge/skills/equinor/neqsim/neqsim-troubleshooting/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/skills/equinor/neqsim/neqsim-troubleshooting"><img src="https://agentmods.dev/badge/skills/equinor/neqsim/neqsim-troubleshooting.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium analysis-evasion · line 1 Suspicious Unicode normalization or mixed-script contentFix: Review the flagged content for security risks. Ensure no credentials, secrets, or sensitive data are exposed.
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 | $0.00062 | $0.08450 |
| Opus 5.5 | $0.00025 | $0.03380 |
| Sonnet 5.5 | $0.00012 | $0.01690 |
| Haiku 4.5 | $0.00006 | $0.00845 |
Grade A, and why
neqsim-troubleshooting 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 today.
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 — 533 lines — stays where its author put it; the contents beside it link to each section on GitHub.
NeqSim Troubleshooting Playbook
Ranked recovery strategies for common failure modes. Try steps in order — stop when the issue is resolved.
Flash Non-Convergence
Symptom: TPflash() or other flash throws exception or returns wrong phase count.
| Step | Action | Why It Helps |
|---|---|---|
| 1 | fluid.setMultiPhaseCheck(true) |
Enables detection of liquid-liquid splits and 3-phase regions |
| 2 | Try a different EOS: SystemPrEos instead of SystemSrkEos |
PR handles heavier components better near critical |
| 3 | Check if near critical point — if $T/T_c > 0.95$ and $P/P_c > 0.8$, use volume-translated EOS: SystemSrkEosvolcor |
Standard cubic EOS has largest errors near critical |
| 4 | Add fluid.init(0); fluid.init(1); before flash to force re-initialization |
Clears stale internal state from prior calculations |
| 5 | Slightly perturb T or P (1 K or 0.1 bar) and re-flash | Exact phase boundary conditions can trap the solver |
| 6 | For mixtures with water + hydrocarbons, use CPA: SystemSrkCPAstatoil with mixing rule 10 |
SRK/PR cannot model hydrogen bonding — water phase behavior is wrong |
| 7 | Check component names against src/main/resources/data/COMP.csv |
Misspelled component names silently fail or load wrong parameters |
NaN / Zero Enthalpy After Clone + Re-Flash
Symptom: A reservoir/well stream flashes fine at source, but after passing
through WellFlow, PipeBeggsAndBrills, or an isenthalpic choke (or after
clone() + re-flash) it returns NaN enthalpy — often surfacing as NaN
compressor power or a non-finite separator duty downstream.
| Step | Action | Why It Helps |
|---|---|---|
| 1 | Check fluid.getEnthalpy() is finite right after the source TPflash() + initProperties() |
Confirms the problem appears only after re-flash, not at the source |
| 2 | If the fluid uses hand-built addTBPfraction pseudo-components, rebuild it from a real PVTsim/E300 characterization (EclipseFluidReadWrite.read) and apply composition via setMolarComposition() |
Degenerate ideal-gas Cp coefficients on hand-built fractions lose enthalpy on re-flash; characterized fractions carry full Cp data |
| 3 | Enable fluid.setMultiPhaseCheck(true) before the choke |
A trapped/undetected third phase at low pressure can yield a non-finite mix enthalpy |
| 4 | For reservoirs, keep a clean clone of the source fluid for the well stream (bypass SimpleReservoir recombination, which can corrupt enthalpy) |
Recombined reservoir fluids can carry inconsistent enthalpy state |
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.
- today Changed 333771b95901
- 6d ago Changed · +4 lines 6af161db08ee
- 24d ago Changed · +44 lines b178672c100d
- 1mo ago Changed · +62 lines d7ad09f5e9d3
- 1mo ago First seen · 423 lines · 62 tokens per session scan A 577a40465a48
neqsim-troubleshooting is a skill published in the GitHub repository equinor/neqsim (156 stars, last pushed today), licensed Apache-2.0. It adds 62 tokens to every session and 8,450 once invoked, about $0.0002 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 2026-09-03.
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