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brat-bootstrap

brat-bootstrap is a skill for Claude Code, Codex from neul-labs/brat. It costs 27 tokens per session (434 once invoked), scanned A, original, MIT.

A setup and analysis skill that examines a codebase and records product and architecture notes in a knowledge base.

In plain words
What is it for?
Use it when starting work on an unfamiliar project to scan source files, documentation, entry points, dependencies, and tests, then produce findings and suggested fixes.
Why use it?
It reveals missing documentation, tests, or design details and checks whether the code matches its stated structure.

Skill for Claude CodeCodex

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

not rated 6repo 4mo ago A scan 27 tokens original MIT

Good fit Use it when starting work on an unfamiliar project to scan source files, documentation, entry points, dependencies, and tests, then produce findings and suggested fixes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/neul-labs/brat/brat-bootstrap
View source ↗ neul-labs/brat brat.neullabs.com
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 neul-labs/brat --skill brat-bootstrap
Clone the repo
git clone --depth 1 https://github.com/neul-labs/brat

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 brat-bootstrap

README.md
[![agentmods](https://agentmods.dev/badge/skills/neul-labs/brat/brat-bootstrap/github.svg)](https://agentmods.dev/skills/neul-labs/brat/brat-bootstrap)
Your own site
<a href="https://agentmods.dev/skills/neul-labs/brat/brat-bootstrap"><img src="https://agentmods.dev/badge/skills/neul-labs/brat/brat-bootstrap/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 brat-bootstrap

Your own site · 80×15
<a href="https://agentmods.dev/skills/neul-labs/brat/brat-bootstrap"><img src="https://agentmods.dev/badge/skills/neul-labs/brat/brat-bootstrap.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 434 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 $0.00027 $0.00434
Opus 5.5 $0.00011 $0.00174
Sonnet 5.5 $0.00005 $0.00087
Haiku 4.5 $0.00003 $0.00043

Measured 2mo ago against content hash b8573a10c8df, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

brat-bootstrap 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 2mo 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.

crates/brat-skills/skills/brat-bootstrap/SKILL.md · 56 lines

What it actually says

brat-bootstrap Skill

Purpose

Analyze user intent and produce structured product requirements stored in the zkb product knowledge base.

Input Schema (JSON)

{
  "codebase_scan": {
    "files": [{"path": "string", "language": "string", "exports": ["string"]}],
    "readme": "string",
    "docs": ["string"],
    "entry_points": ["string"],
    "dependencies": ["string"],
    "test_files": ["string"]
  },
  "existing_kb": {
    "product_notes": [{"title": "string", "body": "string"}],
    "arch_notes": [{"title": "string", "body": "string"}]
  }
}

Output Schema (JSON)

{
  "product_notes": [{"title": "string", "body": "string", "tags": ["string"]}],
  "architecture_notes": [{"title": "string", "body": "string", "tags": ["string"]}],
  "consistency_score": "number (0-100)",
  "inconsistencies": [
    {
      "kind": "MissingArchitecture|OrphanComponent|MissingTests|MissingDocs|Mismatch",
      "severity": "low|medium|high",
      "description": "string",
      "suggested_fix": "string"
    }
  ],
  "notes_to_create": [{"title": "string", "body": "string", "type": "permanent|structure"}]
}

Guardrails

  • ALWAYS scan all source files
  • NEVER skip README or docs
  • Link every product note to at least one architecture note
  • Link every architecture note to at least one product note
  • Flag inconsistencies, don't hide them
  • Iterate up to 5 times, then surface remaining to human
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. 2mo ago First seen · 56 lines · 0 tokens per session scan A b8573a10c8df

Subscribe to this mod's changes

brat-bootstrap is a skill published in the GitHub repository neul-labs/brat (6 stars, last pushed 4mo ago), licensed MIT. It adds 27 tokens to every session and 434 once invoked, about $0.0001 per session on Opus 5.5. 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.

Claude Code[brat, bootstrap, scan, inference]agent-swarmai-agentsautomationopencode
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