grain-genome

grain-genome is a skill for Claude Code from ObneyAI/grain. It costs 64 tokens per session (382 once invoked), scanned A, original, MIT.

A generated interactive map of Grain's components and macros, arranged by architectural role and dependency layer. Grain is the application framework, and the map combines repository facts with manually written descriptions and placement choices.

In plain words
What is it for?
Use it to rebuild the component map after code changes, resolve coverage warnings, update component descriptions and positions, and inspect screenshots for clarity.
Why use it?
It keeps the visual architecture reference aligned with the code and highlights missing, obsolete, or unclear entries.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the grain plugin — 8 skills shipped together

Good fit Use it to rebuild the component map after code changes, resolve coverage warnings, update component descriptions and positions, and inspect screenshots for clarity.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/obneyai/grain/grain-genome
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 ObneyAI/grain --skill grain-genome
Clone the repo
git clone --depth 1 https://github.com/ObneyAI/grain

Made for: Claude Code.

Or install grain, the plugin that ships this one along with the rest of its 8 skills.

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 grain-genome

README.md
[![agentmods](https://agentmods.dev/badge/skills/obneyai/grain/grain-genome.svg)](https://agentmods.dev/skills/obneyai/grain/grain-genome)
Your own site
<a href="https://agentmods.dev/skills/obneyai/grain/grain-genome"><img src="https://agentmods.dev/badge/skills/obneyai/grain/grain-genome.svg" alt="Measured on agentmods" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 382 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00064 $0.00382
Opus 5 $0.00032 $0.00191
Sonnet 5 $0.00013 $0.00076
Haiku 4.5 $0.00006 $0.00038

Measured 8d ago against content hash 592731dc3d03, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

grain-genome 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.

skills/grain-genome/SKILL.md · 37 lines

What it actually says

Grain Genome

bb scripts/genome/genome.bb combines deterministic repository facts with the editorial overlay in scripts/genome/genome-taste.edn, then injects them into the HTML/Scittle shell. Never hand-edit generated grain-genome.html.

Loop

  1. Run bb scripts/genome/genome.bb from the repository root.
  2. Resolve every warning in genome-taste.edn:
    • Add missing current components with a unique (col,row), cluster, short role, and description.
    • Remove entries for deleted or deprecated components.
    • Add missing macros to the proper catalog group using the real arglist and a one-line purpose.
  3. Rebuild until the coverage report is clean.
  4. Run node scripts/genome/shoot.js, inspect every screenshot, and adjust the overlay until traces and layers read clearly.

Taste rules

Rows represent dependency layers: apps, entry/coordination, processors, event-log spine, storage, foundation. Columns run write-left, log-center, read-right. Place nodes near dependencies, avoid shared cells, and exploit shared columns for hubs. Prefer service-area clusters when registered; otherwise classify components by their architectural role.

Facts such as dependencies, LOC, protocols, macros, and deprecation belong only in genome.bb extraction. Placement, clusters, roles, descriptions, and macro presentation belong only in genome-taste.edn.

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 · 37 lines · 64 tokens per session scan A 592731dc3d03

Subscribe to this mod's changes

grain-genome is a skill published in the GitHub repository ObneyAI/grain (118 stars, last pushed 4d ago), licensed MIT. It adds 64 tokens to every session and 382 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 2026-08-30.

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