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neqsim-step-out-screening

neqsim-step-out-screening is a skill for Claude Code, Codex from equinor/neqsim-community-skills. It costs 60 tokens per session (1,298 once invoked), scanned A, original, Apache-2.0.

A simple engineering check for a subsea tie-back, which is a pipe connection from an offshore well area to a host facility. It compares the connection distance, arrival pressure, and optionally the temperature margin against supplied limits before detailed design.

In plain words
What is it for?
Use it to screen step-out distance and arrival pressure, and to combine those checks into an overall result for an early subsea development review.
Why use it?
It provides an early warning when a proposed connection may be too long, have too little pressure at the host, or have insufficient temperature margin for hydrates. It is a screening check, not a design-grade flow-assurance or hydraulic analysis.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 4repo today A scan 60 tokens original Apache-2.0

Good fit Use it to screen step-out distance and arrival pressure, and to combine those checks into an overall result for an early subsea development review.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/equinor/neqsim-community-skills/neqsim-step-out-screening
View source ↗ equinor/neqsim-community-skills equinor.github.io
Install

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.

Any agent
npx skills add equinor/neqsim-community-skills --skill neqsim-step-out-screening
Clone the repo
git clone --depth 1 https://github.com/equinor/neqsim-community-skills

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for neqsim-step-out-screening

README.md
[![agentmods](https://agentmods.dev/badge/skills/equinor/neqsim-community-skills/neqsim-step-out-screening/github.svg)](https://agentmods.dev/skills/equinor/neqsim-community-skills/neqsim-step-out-screening)
Your own site
<a href="https://agentmods.dev/skills/equinor/neqsim-community-skills/neqsim-step-out-screening"><img src="https://agentmods.dev/badge/skills/equinor/neqsim-community-skills/neqsim-step-out-screening/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.

agentmods 80×15 button for neqsim-step-out-screening

Your own site · 80×15
<a href="https://agentmods.dev/skills/equinor/neqsim-community-skills/neqsim-step-out-screening"><img src="https://agentmods.dev/badge/skills/equinor/neqsim-community-skills/neqsim-step-out-screening.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,298 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00060 $0.01298
Opus 5.5 $0.00024 $0.00519
Sonnet 5.5 $0.00012 $0.00260
Haiku 4.5 $0.00006 $0.00130

Measured 1mo ago against content hash 2cb1fb18fd91, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

neqsim-step-out-screening 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 1mo ago.

The scan reads SKILL.md. This mod also ships 4 executable files (examples/basic_step_out_screening.py, src/step_out_screening/__init__.py, src/step_out_screening/model.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/subsea/neqsim-step-out-screening/SKILL.md · 109 lines

How it starts

The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Step-Out Screening

Use this skill for a quick, public screening that ties subsea layout geometry to early flow-assurance and process limits. Given a tie-back step-out distance, an estimated arrival pressure, and a minimum required arrival pressure, it produces simple step-out and arrival-pressure warnings and an overall verdict. An optional hydrate temperature margin can be supplied so the thermal side contributes to the overall flag. It is intentionally simple and should guide users toward validated NeqSim flow-assurance and hydraulic workflows.

When to Use

  • When a user has a tie-back step-out distance and wants a first check against a simple step-out guideline.
  • When an arrival-pressure estimate should be screened against a minimum required arrival pressure.
  • When an agent should combine geometry, pressure, and an optional hydrate margin into one screening verdict before detailed analysis.

Inputs

  • step_out_km: tie-back step-out distance from host to the tied-back development.
  • arrival_pressure_bara: estimated arrival pressure at the host.
  • min_arrival_pressure_bara: minimum required arrival pressure.
  • max_step_out_km: configurable public step-out guideline (default 50 km).
  • hydrate_margin_c: optional temperature margin above the hydrate equilibrium temperature.

Outputs

  • step_out_warning: ok, watch, or high against the step-out guideline.
  • arrival_pressure_margin_bar: arrival pressure minus the minimum required arrival pressure.
  • pressure_warning: ok, watch, or high based on the arrival-pressure margin.
  • hydrate_warning: ok, watch, high, or not_assessed from the optional hydrate margin.
  • overall_warning: the worst of the individual warnings.
  • neqsim_available: whether the optional NeqSim package is importable.
  • assumptions: public assumptions and required follow-up.

Engineering Method

The step-out distance is compared to a configurable public guideline: at or above the guideline is high, above 80 % is watch, otherwise ok. The arrival-pressure margin is the estimated arrival pressure minus the minimum required arrival pressure; a negative margin is high, a small positive margin (below 10 % of the minimum) is watch, otherwise ok. If a hydrate temperature margin is supplied, a negative margin is high, below a small threshold is watch, otherwise ok; if omitted it is not_assessed. The overall warning is the most severe of the assessed warnings.

Read the full file on GitHub · 109 lines

Files

What ships with it

6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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.

  1. 1mo ago First seen · 109 lines · 60 tokens per session scan A 2cb1fb18fd91

Subscribe to this mod's changes

neqsim-step-out-screening is a skill published in the GitHub repository equinor/neqsim-community-skills (4 stars, last pushed today), licensed Apache-2.0. It adds 60 tokens to every session and 1,298 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 2026-09-19.

Scientific
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neqsim-step-out-screening compared with skills from other repositories

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