Agent skill

Substitution Map

Map substitute materials for critical minerals with trade-off analysis and supply risk assessment

Apache-2.0Auto-check passed

Install Substitution Map

skills CLI

$ npx skills add lamm-mit/scienceclaw --skill substitution-map -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install lamm-mit/scienceclaw substitution-map --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/lamm-mit/scienceclaw.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/substitution-map .claude/skills/substitution-map && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "substitution-map" agent skill from https://github.com/lamm-mit/scienceclaw/tree/main/skills/substitution-map into .claude/skills/substitution-map/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "substitution-map", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/lamm-mit/scienceclaw/tree/main/skills/substitution-map

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add lamm-mit/scienceclaw --skill substitution-map -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install lamm-mit/scienceclaw substitution-map --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/lamm-mit/scienceclaw.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/substitution-map .agents/skills/substitution-map && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "substitution-map" agent skill from https://github.com/lamm-mit/scienceclaw/tree/main/skills/substitution-map into .agents/skills/substitution-map/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "substitution-map", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add lamm-mit/scienceclaw --skill substitution-map -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install lamm-mit/scienceclaw substitution-map --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/lamm-mit/scienceclaw.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/substitution-map .cursor/skills/substitution-map && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "substitution-map" agent skill from https://github.com/lamm-mit/scienceclaw/tree/main/skills/substitution-map into .cursor/skills/substitution-map/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "substitution-map", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/lamm-mit/scienceclaw.git --path skills/substitution-map

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add lamm-mit/scienceclaw --skill substitution-map -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install lamm-mit/scienceclaw substitution-map --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/lamm-mit/scienceclaw.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/substitution-map .gemini/skills/substitution-map && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "substitution-map" agent skill from https://github.com/lamm-mit/scienceclaw/tree/main/skills/substitution-map into .gemini/skills/substitution-map/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "substitution-map", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install lamm-mit/scienceclaw substitution-map

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add lamm-mit/scienceclaw --skill substitution-map -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/lamm-mit/scienceclaw.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/substitution-map .github/skills/substitution-map && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "substitution-map" agent skill from https://github.com/lamm-mit/scienceclaw/tree/main/skills/substitution-map into .github/skills/substitution-map/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "substitution-map", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add lamm-mit/scienceclaw --skill substitution-map -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install lamm-mit/scienceclaw substitution-map --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/lamm-mit/scienceclaw.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/substitution-map .opencode/skills/substitution-map && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "substitution-map" agent skill from https://github.com/lamm-mit/scienceclaw/tree/main/skills/substitution-map into .opencode/skills/substitution-map/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "substitution-map", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: substitution-map
GitHub stars: 244
Token cost: ~616 tokens
SKILL.md length: 159 words
Files: 2 (incl. scripts)
Skills in repo: 85
Repo updated: Aug 21, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

Map substitute materials for critical minerals with trade-off analysis and supply risk assessment

SKILL.md covers Usage, Parameters, Available Commodities and Examples, plus 1 more section
Runs Python scripts from its folder; calls python3

What it does

Substitution Map is an agent skill from lamm-mit/scienceclaw. Map substitute materials for critical minerals with trade-off analysis and supply risk assessment

Its SKILL.md is about 620 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including scripts (for example `scripts/substitution_lookup.py`).

The licence is Apache-2.0.

Example prompts

“/substitution-map”

Requirements

Python 3

What it can do on your machine

Read from SKILL.md and the folder at commit ab9aba1. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
- python3
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Substitution Map loads about 616 tokens when it runs. Until then it costs about 29 tokens; SKILL.md has 159 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~29
When it runs · the whole SKILL.md, loaded when a task matches: ~616

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from lamm-mit/scienceclaw at commit ab9aba1, republished under its Apache-2.0 licence (© lamm-mit). 159 words, ~616 tokens.

Download SKILL.mdSave it as .claude/skills/substitution-map/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.

name: substitution-map
description: Map substitute materials for critical minerals with trade-off analysis and supply risk assessment

Substitution Map

Map substitute materials for a critical mineral commodity with trade-off analysis (performance, cost, availability) and supply risk assessment. Uses a curated knowledge base of substitution relationships enriched with live data from BGS production statistics and corpus search.

Usage

Find substitutes for a commodity:

bash

python3 {baseDir}/scripts/substitution_lookup.py --commodity lithium

Filter by application:

bash

python3 {baseDir}/scripts/substitution_lookup.py --commodity cobalt --application batteries

JSON output:

bash

python3 {baseDir}/scripts/substitution_lookup.py --commodity rare_earth --format json

Parameters

Parameter	Description	Default
`--commodity`	Commodity to find substitutes for	Required
`--application`	Specific application: batteries, magnets, catalysts, alloys, electronics	all
`--format`	Output format: summary, detailed, json	summary

Available Commodities

Commodity	Key Applications
`lithium`	Batteries, ceramics, lubricants
`cobalt`	Batteries, superalloys, catalysts
`rare_earth`	Magnets, catalysts, phosphors
`nickel`	Batteries, stainless steel, alloys
`graphite`	Batteries, refractories, lubricants
`manganese`	Steel, batteries, chemicals
`gallium`	Semiconductors, LEDs, solar cells
`germanium`	Fiber optics, IR optics, solar cells
`copper`	Wiring, electronics, motors

Examples

bash

# All lithium substitutes
python3 {baseDir}/scripts/substitution_lookup.py --commodity lithium

# Cobalt substitutes in batteries
python3 {baseDir}/scripts/substitution_lookup.py --commodity cobalt --application batteries

# Rare earth substitutes in magnets (JSON)
python3 {baseDir}/scripts/substitution_lookup.py --commodity rare_earth --application magnets --format json

Notes

Substitution data from curated knowledge base (USGS, industry literature)
Trade-off ratings: performance (1-5), cost (relative), availability (1-5)
Supply risk enrichment from BGS when available
For production data, use bgs-production; for risk metrics, use supply-chain-analysis

Files

SKILL.md and 1 other file (scripts) in skills/substitution-map of lamm-mit/scienceclaw.

SKILL.md
scripts/substitution_lookup.py

Open the folder on GitHubat commit ab9aba1

Compare with similar skills

Substitution Map next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Substitution Map compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Substitution Map this skilllamm-mit/scienceclaw	244	—	~616	Automated safety check: Pass	Apache-2.0	1 mo ago
Agent Trading Predictorruvnet/ruflo	74k	3 repos	~2.5k	Automated safety check: Pass	MIT	today
LLM Trading Agent Securityaffaan-m/ECC	275k	2 repos	~1.2k	Automated safety check: Pass	MIT	3 days ago
Trade Journal AnalysisHKUDS/Vibe-Trading	35k	—	~1.8k	Automated safety check: Pass	MIT	today
Trading Ledgersickn33/agentic-awesome-skills	47k	1 repos	~2.2k	Automated safety check: Pass	MIT	yesterday
Token Mapnexu-io/open-design	100k	—	~1.4k	Automated safety check: Pass	Apache-2.0	today

Similar skills

Agent Trading Predictor
ruvnet/ruflo
Agent skill for trading-predictor - invoke with $agent-trading-predictor
74k GitHub starsUsed in 3 repos~2.5k tokens
Business, Finance & HRAuto-check passed
LLM Trading Agent Security
affaan-m/ECC
Security patterns for autonomous trading agents with wallet or transaction authority.
275k GitHub starsUsed in 2 repos~1.2k tokens
SecurityAuto-check passed
Trade Journal Analysis
HKUDS/Vibe-Trading
Reads a broker export of your trades (CSV or Excel), builds a trading profile and runs four behavior checks: disposition effect, overtrading, chasing and anchoring.
35k GitHub stars~1.8k tokensUpdated today
Business, Finance & HRAuto-check passed
Trading Ledger
sickn33/agentic-awesome-skills
A trading journal that captures the decision, not just the fill: thesis, plan, and emotion at the moment of entry, written to the user's own Notion database; reviews grade decisions, not P&L.
47k GitHub starsUsed in 1 repo~2.2k tokens
Business, Finance & HRAuto-check passed
Token Map
nexu-io/open-design
Map an extracted Figma / source-code token bag onto the active OD design system, producing a deterministic mapping the generate stage can consume.
100k GitHub stars~1.4k tokensUpdated today
Frontend & DesignAuto-check passed
Pair Trading Signals
HKUDS/Vibe-Trading
Trades mean reversion between two correlated instruments using the Z-score of their price ratio, going long one leg and short the other when the ratio stretches.
35k GitHub stars~651 tokensUpdated today
Business, Finance & HRAuto-check passed

Questions about Substitution Map

What does Substitution Map do?

Map substitute materials for critical minerals with trade-off analysis and supply risk assessment. Substitution Map is an agent skill from lamm-mit/scienceclaw.

How do I install Substitution Map in Claude Code?

Run `npx skills add lamm-mit/scienceclaw --skill substitution-map -a claude-code`. Or copy the skill folder (skills/substitution-map in lamm-mit/scienceclaw) into .claude/skills/substitution-map in your project. Claude Code loads it when a task matches its description.

How do I install Substitution Map in Codex?

Run `npx skills add lamm-mit/scienceclaw --skill substitution-map -a codex`. Or copy the skill folder (skills/substitution-map in lamm-mit/scienceclaw) into .agents/skills/substitution-map in your project. Codex loads it when a task matches its description.

Can I use Substitution Map in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add lamm-mit/scienceclaw --skill substitution-map -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/substitution-map, .gemini/skills/substitution-map, .github/skills/substitution-map and .opencode/skills/substitution-map in your project.

What does Substitution Map need to run?

Going by SKILL.md and its folder, Substitution Map needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3.

Does Substitution Map access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Substitution Map safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Substitution Map use?

Substitution Map is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Substitution Map use?

About 616 tokens (SKILL.md is roughly 2.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Substitution Map?

Skills that share tags, products or a category with Substitution Map: Agent Trading Predictor (ruvnet/ruflo, 74k stars), LLM Trading Agent Security (affaan-m/ECC, 275k stars), Trade Journal Analysis (HKUDS/Vibe-Trading, 35k stars) and Trading Ledger (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Substitution Map?

lamm-mit (a GitHub user) maintains it in lamm-mit/scienceclaw, which has 244 GitHub stars. The repository holds 85 skills in this directory. The repository was last updated on August 21, 2026.

Source: lamm-mit/scienceclaw on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Substitution Map

Facts

At a glance

What it does

Example prompts

Requirements

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Substitution Map

Usage

Find substitutes for a commodity:

Filter by application:

JSON output:

Parameters

Available Commodities

Examples

Notes

Files

Compare with similar skills

Similar skills

More from lamm-mit/scienceclaw

Questions about Substitution Map