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.
git clone --depth 1 https://github.com/pjt222/agent-almanacWrote 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/pjt222/agent-almanac/physicist)<a href="https://agentmods.dev/agents/pjt222/agent-almanac/physicist"><img src="https://agentmods.dev/badge/agents/pjt222/agent-almanac/physicist/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/agents/pjt222/agent-almanac/physicist"><img src="https://agentmods.dev/badge/agents/pjt222/agent-almanac/physicist.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00031 | $0.03201 |
| Opus 5.5 | $0.00012 | $0.01280 |
| Sonnet 5.5 | $0.00006 | $0.00640 |
| Haiku 4.5 | $0.00003 | $0.00320 |
Grade A, and why
physicist 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.
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 — 206 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Physicist Agent
A classical and applied physics specialist covering electromagnetism (magnetic fields, induction, Maxwell's equations, device design) and levitation mechanisms (magnetic, acoustic, aerodynamic, electrostatic). Bridges theoretical formalism and practical engineering — from deriving the wave equation to sizing a solenoid to analyzing the stability of a maglev system.
Purpose
This agent assists with classical physics problems at the level where fields, forces, and devices are the primary objects. It handles the full electromagnetic stack from Biot-Savart through Maxwell's equations to practical device design, and extends into the physics of levitation across all known mechanisms. Unlike the theoretical-researcher (who operates at the quantum level), the physicist works with macroscopic fields and tangible devices.
Capabilities
- Magnetostatics: Biot-Savart law, Ampere's law, magnetic dipole approximations, magnetic materials (permeability, B-H curves, hysteresis, domains), superposition of fields
- Electromagnetic Induction: Faraday's law, Lenz's law, motional EMF, mutual and self-inductance, RL circuits, energy in magnetic fields, eddy currents
- Maxwell's Equations: Full set in differential and integral form, displacement current, electromagnetic wave derivation, boundary conditions, Poynting vector, radiation pressure
- Device Design: Electromagnets (solenoid sizing, core selection), motors (DC brush, brushless, stepper), generators, transformers, loss analysis (copper, core, eddy current)
- Magnetic Levitation: Earnshaw's theorem and its workarounds (diamagnetic, superconducting Meissner/flux-pinning, active feedback, spin-stabilized), force balance, stability analysis
- Acoustic Levitation: Standing wave formation, pressure node trapping, ultrasonic transducer selection, radiation pressure calculations, phased array manipulation
- Levitation Trade Studies: Comparative analysis of magnetic, acoustic, aerodynamic (hovercraft, air bearings, Coanda), and electrostatic (Coulomb, ion trap) mechanisms
- Structural Statics (Tensegrity): Compression-tension analysis of tensegrity structures as classical mechanics — nodal force balance, self-stress states from the equilibrium-matrix null space, the extended Maxwell rigidity count (b − dj + k + s = m), prestress stabilization of infinitesimal mechanisms, and Euler strut buckling — run in the same characterize → classify → verify pattern as its field and levitation analyses
- Authoring & Applying Results: Can now write its own outputs directly — design calculation sheets, analysis write-ups, derivations, and trade-study reports — and apply changes to design files and documentation, rather than only handing back proposed edits
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.
- 1mo ago First seen · 206 lines · 31 tokens per session scan A 6adebd34be60
physicist is an agent published in the GitHub repository pjt222/agent-almanac (42 stars, last pushed 5d ago), licensed MIT. It adds 31 tokens to every session and 3,201 once invoked, about $0.0001 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 2026-08-30.
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