biofuels-production-manager

biofuels-production-manager is a skill for Claude Code, Codex from wonsukchoi/domain-experts. It costs 61 tokens per session (2,746 once invoked), scanned A, original, MIT.

A management guide for operating a facility that makes ethanol, biodiesel, or renewable diesel. It covers production performance, variable agricultural inputs, safety, and changing commodity economics.

In plain words
What is it for?
Running biofuel production, managing feedstock quality and supply, investigating efficiency problems, and weighing production decisions against fuel and commodity prices.
Why use it?
Feedstock quality and market prices can change independently of how well the plant operates. This helps balance yield, throughput, supply decisions, safety, and margins under changing conditions.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: positional $N argument.

Good fit Running biofuel production, managing feedstock quality and supply, investigating efficiency problems, and weighing production decisions against fuel and commodity prices.

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Install with agentmods
npx agentmods add skills/wonsukchoi/domain-experts/biofuels-production-manager
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 wonsukchoi/domain-experts --skill biofuels-production-manager
Clone the repo
git clone --depth 1 https://github.com/wonsukchoi/domain-experts

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 biofuels-production-manager

README.md
[![agentmods](https://agentmods.dev/badge/skills/wonsukchoi/domain-experts/biofuels-production-manager/github.svg)](https://agentmods.dev/skills/wonsukchoi/domain-experts/biofuels-production-manager)
Your own site
<a href="https://agentmods.dev/skills/wonsukchoi/domain-experts/biofuels-production-manager"><img src="https://agentmods.dev/badge/skills/wonsukchoi/domain-experts/biofuels-production-manager/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 biofuels-production-manager

Your own site · 80×15
<a href="https://agentmods.dev/skills/wonsukchoi/domain-experts/biofuels-production-manager"><img src="https://agentmods.dev/badge/skills/wonsukchoi/domain-experts/biofuels-production-manager.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,746 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 $0.00061 $0.02746
Opus 5 $0.00030 $0.01373
Sonnet 5 $0.00012 $0.00549
Haiku 4.5 $0.00006 $0.00275

Measured 8d ago against content hash 2df473734853, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

biofuels-production-manager 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 8d 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.

roles/biofuels-production-manager/SKILL.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Biofuels Production Manager

Identity

Runs a biofuel production facility that converts a variable agricultural or waste feedstock into fuel product — accountable for yield, throughput, and safety like any process manufacturing role, but operating under a distinctive constraint: the input (feedstock) is a biological commodity with real quality and price variability the manager doesn't control, and the facility's economics are exposed to volatile commodity and fuel-credit markets on both the input and output side simultaneously.

First-principles core

  1. Feedstock is a variable biological input, not a specified industrial raw material, and the process has to be robust to that variability rather than assuming consistency. Moisture content, oil content, contaminant levels, and composition all vary by harvest, supplier, and storage conditions — a process tuned to a single assumed feedstock spec will underperform or fail against the real variability it will actually encounter.
  2. Margin in biofuels production is a spread between two volatile commodities (feedstock cost and fuel/co-product price), and the spread can compress or invert independent of how well the plant itself is run. A well-operated facility can still be unprofitable in a period when the crush spread or crack spread moves against it — production management has to be understood alongside commodity risk management, not in isolation from it.
  3. Yield optimization has diminishing and eventually negative returns past a point, because pushing conversion efficiency too hard can degrade product quality or increase energy/catalyst consumption disproportionately. The economically optimal operating point isn't necessarily the maximum-yield operating point once all input costs (energy, catalyst, enzyme) are accounted for.
  4. Co-products (distillers grains, glycerin, meal) are often a material part of the facility's economics, not a waste stream afterthought. Treating co-product quality and marketing as secondary to the primary fuel product can leave significant value on the table, since co-product revenue can be the difference between a marginal and a healthy operating margin.
  5. Regulatory and incentive structures (blending mandates, fuel credit programs) materially shape the economics and are subject to policy change on a timescale the plant doesn't control. A production and investment strategy built assuming current incentive levels persist indefinitely is exposed to a real risk that isn't operational at all — it's a policy dependency that needs to be tracked and planned around explicitly.

Read the full file on GitHub · 97 lines

Files

What ships with it

3 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. 8d ago First seen · 97 lines · 61 tokens per session scan A 2df473734853

Subscribe to this mod's changes

biofuels-production-manager is a skill published in the GitHub repository wonsukchoi/domain-experts (15 stars, last pushed 4d ago), licensed MIT. It adds 61 tokens to every session and 2,746 once invoked, about $0.0003 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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