A routing guide for physics work such as simulations, calculations, validation, and research computing. It directs requests to the relevant physics area or to literature-only help.

Use it to classify work involving molecular dynamics, electronic structure, particle collisions, multiphysics, plasma, nuclear or radiation studies, and astronomy or cosmology.

It helps choose an appropriate open-source tool and safer workflow for a physics problem. It also makes clear when the router cannot directly monitor a running job.

physics — Skill for Claude Code and Codex by Rockielab: A routing guide for physics work such as simulations…

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.

agentmods

npx agentmods add skills/rockielab/rockie-codex/physics

Any agent

npx skills add Rockielab/rockie-codex --skill physics

Clone the repo

git clone --depth 1 https://github.com/Rockielab/rockie-codex

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/rockielab/rockie-codex/physics.svg)](https://agentmods.dev/skills/rockielab/rockie-codex/physics)

Your own site

<a href="https://agentmods.dev/skills/rockielab/rockie-codex/physics"><img src="https://agentmods.dev/badge/skills/rockielab/rockie-codex/physics.svg" alt="Measured on agentmods" height="20"></a>

Per session 75 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,028 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin 100% copy Near-identical to another mod 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.

Model	Per session	Once invoked
Fable 5	$0.00075	$0.02028
Opus 5	$0.00037	$0.01014
Sonnet 5	$0.00015	$0.00406
Haiku 4.5	$0.00007	$0.00203

Measured 5d ago against content hash 2cc6c2443800, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

physics 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 5d ago.

The scan reads SKILL.md. This mod also ships 7 executable files (runtime/classifier/classify_prompt.py, runtime/parse_physics_log.py, templates/astro-cosmology/athena-handoff/run_handoff.sh, …), 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.

Origin

This is a copy

100% identical to physics — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

project-extension/agents/skills/physics/SKILL.md · 188 lines

How it starts

The opening of the file, as written. The whole thing — 188 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Physics Research Router

Use this top-level skill for physics requests that imply simulation, calculation, modeling, validation, input-deck generation, run monitoring, or result interpretation. Current skill discovery is top-level only, so the domain modules are routed references under references/ rather than nested discoverable skills.

Physics is a router by default, not a direct provisioner. If a user asks for direct monitor status without a bound underlying run owner, return router_not_provisioner. Executed-run monitoring belongs to the owning provisioner parent skill such as experiment or inference-engineer, not the physics router itself.

First Steps

Classify the request into one family: force_fields, molecular_dynamics, electronic_structure, particle_transport_collision, continuum_multiphysics, plasma_pic, nuclear_radiation, astro_cosmology, or literature_only.
If classification is ambiguous and the answer would materially change the engine or safety posture, ask at most two clarifying questions. If the user does not answer, choose the safest open-source-first default and state the assumption.
Load the routed reference module plus references/licensing.md and references/software-landscape.md.
Write a run plan before execution or handoff.
Attach the matching dashboard profile id and preserve every generated config, script, log, parser output, artifact path, and Note outline.

Non-computational literature review requests route to source search and note writing only. Do not invent a simulation run.

Router Rules

Signal	Family	Reference
Missing parameters, charges, water/ion compatibility, metals, surfaces, unusual residues, mixing rules	`force_fields`	`references/force-fields.md`
Classical atomistic dynamics, LAMMPS/GROMACS/OpenMM, trajectory, thermostat, barostat, enhanced sampling	`molecular_dynamics`	`references/molecular-dynamics.md`
DFT, SCF, band structure, orbitals, phonons, geometry optimization, AIMD setup	`electronic_structure`	`references/electronic-structure.md`
Detector simulation, event generation, collisions, PYTHIA, MadGraph, Geant4, ROOT	`particle_transport_collision`	`references/particle-transport-collision.md`
CFD, FEA, mesh, residuals, CFL, stress, heat transfer, coupled PDEs, OpenFOAM, SU2, MOOSE, CalculiX	`continuum_multiphysics`	`references/continuum-multiphysics.md`
Plasma sheath, PIC, fields plus particles, WarpX, Smilei, openPMD, Courant constraints	`plasma_pic`	`references/plasma-pic.md`
Neutron/photon transport, reactor, shielding, tallies, depletion, source convergence, OpenMC, MCNP	`nuclear_radiation`	`references/nuclear-radiation.md`
Galaxy, cosmology, N-body, MHD, redshift, Athena++, GADGET-family workflows	`astro_cosmology`	`references/astro-cosmology.md`
Literature review, compare papers, summarize methods without running	`literature_only`	source search and note writing

Read the full file on GitHub · 188 lines

Files

What ships with it

55 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.

5d ago First seen · 188 lines · 75 tokens per session scan A 2cc6c2443800

Subscribe to this mod's changes

physics is a skill published in the GitHub repository Rockielab/rockie-codex (20 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 75 tokens to every session and 2,028 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to physics, differing in 0 lines, and is treated as a copy.

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