materials-lca

materials-lca is a skill for Claude Code, Codex from SFETNI/Deep-Matter-Chem-Skills. It costs 3 tokens per session (3,554 once invoked), scanned A, original, MIT.

A guide to life-cycle assessment, a method for estimating the environmental impacts of a material, chemical, product, or manufacturing process across a defined life cycle.

In plain words
What is it for?
Use it to compare materials or production routes, screen candidates, and include environmental measures in databases, machine-learning, optimization, or thermodynamics workflows.
Why use it?
It helps prevent misleading comparisons by making assumptions about boundaries, data sources, electricity, recycling, co-products, and other parts of the assessment explicit.

Skill for Claude CodeCodex

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

Good fit Use it to compare materials or production routes, screen candidates, and include environmental measures in databases, machine-learning, optimization, or thermodynamics workflows.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sfetni/deep-matter-chem-skills/materials-lca
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 SFETNI/Deep-Matter-Chem-Skills --skill materials-lca
Clone the repo
git clone --depth 1 https://github.com/SFETNI/Deep-Matter-Chem-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 materials-lca

README.md
[![agentmods](https://agentmods.dev/badge/skills/sfetni/deep-matter-chem-skills/materials-lca/github.svg)](https://agentmods.dev/skills/sfetni/deep-matter-chem-skills/materials-lca)
Your own site
<a href="https://agentmods.dev/skills/sfetni/deep-matter-chem-skills/materials-lca"><img src="https://agentmods.dev/badge/skills/sfetni/deep-matter-chem-skills/materials-lca/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 materials-lca

Your own site · 80×15
<a href="https://agentmods.dev/skills/sfetni/deep-matter-chem-skills/materials-lca"><img src="https://agentmods.dev/badge/skills/sfetni/deep-matter-chem-skills/materials-lca.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,554 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 $0.00003 $0.03554
Opus 5 $0.00002 $0.01777
Sonnet 5 $0.00001 $0.00711
Haiku 4.5 $0.00000 $0.00355

Measured 12d ago against content hash 52a1dc8316ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

materials-lca 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 12d 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.

skills/sustainability-lca/materials-lca/SKILL.md · 272 lines

How it starts

The opening of the file, as written. The whole thing — 272 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Materials Life-Cycle Assessment

Description

This skill covers life-cycle assessment (LCA) for materials, chemicals, and manufacturing routes: goal and scope definition, functional units, system boundaries, inventory construction, allocation, impact assessment, uncertainty, scenario analysis, database provenance, prospective LCA, and sustainability-aware materials design. Invoke this skill when comparing environmental burdens of materials or processes, screening candidate routes, or coupling sustainability metrics to materials databases, high-throughput screening, small-data ML, Bayesian optimization, or thermodynamic design workflows.

Domain Context

Life-cycle assessment estimates environmental impacts associated with a product, process, material, or service across a defined life cycle. It is not a single number. An LCA result depends on the goal and scope, functional unit, system boundary, allocation choices, life-cycle inventory, background database, impact assessment method, geography, electricity mix, technology maturity, and assumptions about use phase, end of life, recycling, and co-products.

For materials and chemicals, the functional unit is often the most important modeling decision. "1 kg of material" is rarely enough when materials differ in lifetime, strength, conductivity, catalytic activity, purity, embodied function, or replacement rate. A battery cathode, catalyst, membrane, structural alloy, polymer, solvent, or precursor should be compared on a unit of service whenever possible. The wrong functional unit can reverse conclusions.

LCA is appropriate for structured environmental comparison, hotspot analysis, prospective technology assessment, and sustainability-aware screening. It is not a substitute for techno-economic analysis, process safety analysis, toxicity testing, policy modeling, or full social/environmental justice assessment, although it may provide inputs to those workflows. Impact categories are model-dependent and region-dependent; global warming potential is only one dimension of sustainability. [EXPERT REVIEW NEEDED]

Read the full file on GitHub · 272 lines

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. 12d ago First seen · 272 lines · 3 tokens per session scan A 52a1dc8316ad

Subscribe to this mod's changes

materials-lca is a skill published in the GitHub repository SFETNI/Deep-Matter-Chem-Skills (6 stars, last pushed 1mo ago), licensed MIT. It adds 3 tokens to every session and 3,554 once invoked, about $0.0000 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 2026-08-31.

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