paperlab_derivation_symbolic_checking

paperlab_derivation_symbolic_checking is a skill for Claude Code, Codex from equinor/neqsim. It costs 35 tokens per session (345 once invoked), scanned A, original, Apache-2.0.

A review method for mathematical derivations, such as new equations, algorithms, Jacobians, and residual formulas. It checks assumptions, units, symbols, simple limiting cases, and links to code or tests.

In plain words
What is it for?
Use it to audit equations in papers or books and record issues, checked cases, and implementation links.
Why use it?
It helps find derivation errors, hidden assumptions, inconsistent notation, and gaps between published mathematics and its implementation.

Skill for Claude CodeCodex

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

Good fit Use it to audit equations in papers or books and record issues, checked cases, and implementation links.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/equinor/neqsim/paperlab_derivation_symbolic_checking
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 --skill paperlab_derivation_symbolic_checking
Clone the repo
git clone --depth 1 https://github.com/equinor/neqsim

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 paperlab_derivation_symbolic_checking

README.md
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Your own site
<a href="https://agentmods.dev/skills/equinor/neqsim/paperlab_derivation_symbolic_checking"><img src="https://agentmods.dev/badge/skills/equinor/neqsim/paperlab_derivation_symbolic_checking/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 paperlab_derivation_symbolic_checking

Your own site · 80×15
<a href="https://agentmods.dev/skills/equinor/neqsim/paperlab_derivation_symbolic_checking"><img src="https://agentmods.dev/badge/skills/equinor/neqsim/paperlab_derivation_symbolic_checking.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 345 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00035 $0.00345
Opus 5 $0.00017 $0.00172
Sonnet 5 $0.00007 $0.00069
Haiku 4.5 $0.00003 $0.00034

Measured 7d ago against content hash c66bcf8c4fa1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

paperlab_derivation_symbolic_checking 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.

neqsim-paperlab/skills/paperlab_derivation_symbolic_checking/SKILL.md · 52 lines

What it actually says

PaperLab Derivation Symbolic Checking

When to Use

USE WHEN: a paper or book includes a new method, equation derivation, algorithm description, Jacobian, residual formulation, or thermodynamic identity.

Audit Dimensions

Dimension Questions
Assumptions Are phase, EOS, ideality, and differentiability assumptions explicit?
Units Are both sides dimensionally consistent?
Symbols Are symbols defined once and reused consistently?
Limiting cases Does the equation reduce correctly for simple or ideal cases?
Code linkage Is there a Java method, notebook, or test implementing the equation?

Output Schema

{
  "equations": [
    {
      "label": "residual_jacobian",
      "status": "needs_fix",
      "issues": ["symbol J reused for flux and Jacobian"],
      "limiting_cases_checked": ["ideal gas", "zero association"],
      "implementation_link": "neqsim.package.Class#method"
    }
  ]
}

Pass Criteria

  • Each derivation states assumptions.
  • Units and symbols are consistent.
  • At least one limiting case or reference comparison is described.
  • Implementation or test linkage exists for computational methods.

Safety Rules

  • Do not present dimensional consistency as mathematical proof.
  • If symbolic algebra cannot be run, state that the review is manual.
  • Keep corrections minimal and tied to the manuscript text.
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. 7d ago First seen · 52 lines · 35 tokens per session scan A c66bcf8c4fa1

Subscribe to this mod's changes

paperlab_derivation_symbolic_checking is a skill published in the GitHub repository equinor/neqsim (151 stars, last pushed today), licensed Apache-2.0. It adds 35 tokens to every session and 345 once invoked, about $0.0002 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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