mat-dft-lobster

mat-dft-lobster is a skill for Claude Code, Codex from learningmatter-mit/AtomisticSkills. It costs 34 tokens per session (1,065 once invoked), scanned A, original, MIT.

A workflow that uses VASP results with LOBSTER to study chemical bonding. LOBSTER projects electron calculations onto atom-like orbitals so bond strength, atomic charges, and electronic states can be examined.

In plain words
What is it for?
Use it to calculate COHP and ICOHP bonding measures, atomic charges, and projected density of states (DOS), which shows electronic states by energy.
Why use it?
It turns large, abstract electronic-structure output into information about which atoms bond and how strongly.

Skill for Claude CodeCodex

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/learningmatter-mit/atomisticskills/mat-dft-lobster
Any agent
npx skills add learningmatter-mit/AtomisticSkills --skill mat-dft-lobster
Clone the repo
git clone --depth 1 https://github.com/learningmatter-mit/AtomisticSkills

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 mat-dft-lobster

README.md
[![agentmods](https://agentmods.dev/badge/skills/learningmatter-mit/atomisticskills/mat-dft-lobster.svg)](https://agentmods.dev/skills/learningmatter-mit/atomisticskills/mat-dft-lobster)
Your own site
<a href="https://agentmods.dev/skills/learningmatter-mit/atomisticskills/mat-dft-lobster"><img src="https://agentmods.dev/badge/skills/learningmatter-mit/atomisticskills/mat-dft-lobster.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,065 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00034 $0.01065
Opus 5 $0.00017 $0.00532
Sonnet 5 $0.00007 $0.00213
Haiku 4.5 $0.00003 $0.00106

Measured today against content hash f58131fb49b5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mat-dft-lobster 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.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/analyze_lobster.py, scripts/generate_inputs.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.

.agents/skills/mat-dft-lobster/SKILL.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

mat-dft-lobster

Goal

To calculate advanced chemical bonding properties—like Crystal Orbital Hamilton Populations (COHP), atomic charges, projected DOS, and bonding integrands (ICOHP)—by projecting converged plane-wave Density Functional Theory (DFT) wavefunctions onto a localized, atomic-like basis set using the LOBSTER code.

Background

Standard plane-wave DFT (e.g., VASP) distributes electron density uniformly across reciprocal space, which is computationally robust but lacks explicit chemical intuition regarding localized bonds. LOBSTER (Local Orbital Basis Suite Towards Electronic-Structure Reconstruction) takes the massive WAVECAR from VASP and projects it back to an atomic orbital basis to recover classical chemical bonding insights.

Because WAVECAR files are extremely large (often tens or hundreds of gigabytes), LOBSTER analysis must be performed on the same remote node directly after the VASP static loop. The atomate2 VaspLobsterMaker automates this sequentially (Relax -> Static -> Lobster) and ensures the massive WAVECAR is deleted once the projection completes.

Installation

LOBSTER is free to download for non-commercial use from http://www.cohp.de/.

To use this skill, deploy the compiled lobster binary to your remote HPC worker or local testing environment and ensure its path is exported in your environment PATH. All required Python packages (lobsterpy, ijson) are already provided by the atomate2-agent environment.

Instructions

1. Generate and Execute the Workflow

To submit a LOBSTER workflow, utilize the built-in MCP tool. This natively maps the VaspLobsterMaker directed acyclic graph (DAG) to your HPC resources:

Tool: mcp_atomate2_run_atomate2_vasp_calculation Arguments:

  • structures_path: Path to your POSCAR or CIF.
  • calculation_type: "lobster"
  • execution_mode: "remote" (to execute on the HPC worker)

CRITICAL: Do not run this locally unless you are purely generating testing DAGs (check_only=True). The generated flow contains heavy VASP iterations and high-memory LOBSTER matrix projections.

Read the full file on GitHub · 76 lines

Files

What ships with it

4 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. today First seen · 76 lines · 34 tokens per session scan A f58131fb49b5

Subscribe to this mod's changes

mat-dft-lobster is a skill published in the GitHub repository learningmatter-mit/AtomisticSkills (158 stars, last pushed yesterday), licensed MIT. It adds 34 tokens to every session and 1,065 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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