compose

Um comando que combina vários arquivos SKILL.md, que contêm instruções para agentes de código, em um único arquivo. Pode juntar seções repetidas ou fazer instruções posteriores substituírem as anteriores.

In plain words
What is it for?
Serve para mesclar ou encadear arquivos de instruções, escolher um nome e um caminho de saída e revisar o resultado sem gravar alterações. Também oferece opções para deduplicação, sobrescrita e saída em JSON.
Why use it?
Evita copiar e organizar manualmente instruções de várias habilidades. A prévia e as estatísticas ajudam a conferir o resultado antes de salvá-lo.

Command

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.

agentmods
npx agentmods add commands/rolecraft-sh/rolecraft/compose
Clone the repo
git clone --depth 1 https://github.com/rolecraft-sh/rolecraft
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 795 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00795
Opus 5 $0.00000 $0.00398
Sonnet 5 $0.00000 $0.00159
Haiku 4.5 $0.00000 $0.00080

Measured 3d ago against content hash aa509666581a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

compose 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 3d 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.

docs/commands/compose.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

rolecraft compose

Combine multiple SKILL.md files into a single composed skill. Supports two composition strategies: merge (deduplicate) and chain (override).

Usage

rolecraft compose <a> <b> [<c> ...]              # Merge mode (default), output to stdout
rolecraft compose <a> <b> -o combined.SKILL.md   # Write to file
rolecraft compose <a> <b> --chain --name combined # Chain mode with custom name

Options

Flag Description
-o, --output <path> Output file path (default: stdout)
--chain Chain mode — later skills override same sections
--name <name> Custom name for the composed skill
--dry-run Preview compose result without writing
--force Overwrite existing output file
--json JSON output with stats
--no-color Disable ANSI colors

Modes

Merge (default)

Combines all sections, deduplicating same-named sections line-by-line. Lines that already exist in the first skill are not duplicated.

Section "Code Style" from skill A + skill B:
  Use 2-space indentation    ← from A (kept)
  Use single quotes          ← from A (kept)
  Write tests first          ← from B (unique, added)

Chain

Sequences skills with override — later skills overwrite same-named sections entirely. Useful for team-specific overrides:

Base skill → Team A overrides → Team B customizations

How it works

  1. Parse each SKILL.md (frontmatter + section list)
  2. In merge mode: collect all sections, merge same-named ones (set-based dedup)
  3. In chain mode: iterate sections in order, later wins for same heading
  4. Merge frontmatter from all sources (first name wins, first slug wins, rest accumulate)
  5. Generate auto-description from source names if not provided
  6. Output composed SKILL.md

Examples

$ rolecraft compose ./react.SKILL.md ./testing.SKILL.md -o ./react-testing.SKILL.md

✓ Written to ./react-testing.SKILL.md

Composing 2 skills (merge mode)...

Compose result:
  ✓ 3 sections composed
  ✓ 4 frontmatter fields
  ✓ Sources: 2
  ✓ Mode: merge
  ✓ Input: 4 sections → Output: 3 sections

Read the full file on GitHub · 106 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. 3d ago First seen · 106 lines · 0 tokens per session scan A aa509666581a

Subscribe to this mod's changes

compose is a command published in the GitHub repository rolecraft-sh/rolecraft (75 stars, last pushed 5d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 795 tokens. 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.