become

become is a command for Claude Code from drobins25/craft. It costs 39 tokens per session (4,710 once invoked), scanned A, original, MIT.

A command that studies a tool, role, or person and turns its working approach into a portable AI agent.

In plain words
What is it for?
Use it to create specialized agents based on a professional role, software tool, or individual, including before a project has been initialized.
Why use it?
It captures beliefs, decision methods, and lessons from experience so the resulting agent can be reused in other projects. Project context is supplied when the agent runs.

Command for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: reads .claude/ paths; mentions subagents; names the AskUserQuestion tool.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the craft plugin — 29 commands, 27 agents, 1 MCP server shipped together

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add drobins25/craft
Claude Code
/plugin install craft

Made for: Claude Code.

Or install craft, the plugin that ships this one along with the rest of its 29 commands, 27 agents, 1 MCP server.

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 become

README.md
[![agentmods](https://agentmods.dev/badge/commands/drobins25/craft/craft-become.svg)](https://agentmods.dev/commands/drobins25/craft/craft-become)
Your own site
<a href="https://agentmods.dev/commands/drobins25/craft/craft-become"><img src="https://agentmods.dev/badge/commands/drobins25/craft/craft-become.svg" alt="Measured on agentmods" height="20"></a>
Per session 39 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,710 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 5.1 $0.00039 $0.04710
Opus 5 $0.00019 $0.02355
Sonnet 5 $0.00008 $0.00942
Haiku 4.5 $0.00004 $0.00471

Measured 6d ago against content hash f3ec436bb962, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

become 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 6d 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.

commands/craft-become.md · 368 lines

How it starts

The opening of the file, as written. The whole thing — 368 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Become

Crystallize a tool, role, or person into a portable AI agent. Unlike /craft:research which discovers what's true, /craft:become inhabits a mind - producing an agent with beliefs, decision frameworks, and scar tissue.

Agents produced by this command are portable. They carry perception, not project context. Project context comes from the environment at runtime.

Project Root

Use $CRAFT_PROJECT_ROOT (set at session start) as the base path for all .craft/ references. If not set, resolve by walking up from PWD to find the nearest .craft/.global-state.

Cold fallback (uninitialized project): if neither resolves, anchor to the git toplevel (git rev-parse --show-toplevel) when in a repo, else PWD - never a subdirectory. Become runs fine before /craft:init; research branches and the crystallized agent land at the repo root, not wherever the shell happens to sit.

Set PROJECT to the resolved root - env var, then walk-up, then git toplevel, then PWD, in that order. Never default to bare ..

Flow

Phase 0: Intent

Mode flags: Before classifying the input, scan args for flags.

  • If args contain --deep, set DEPTH=7 and strip the flag from the remaining args. The stripped args are then classified by source type as below.
  • If --deep is absent, set DEPTH=5.

DEPTH is referenced in Phase 1 to size the sub-question generation. The default of 5 is role-optimized: most become runs synthesize across practitioners with genuine disagreement, and 5 branches cover the six psychological-material categories (beliefs, trade-offs, refusals, mistake taxonomy, user needs, scar tissue) with one branch absorbing two adjacent categories. Source-based research (one tool) naturally saturates at 3-4 branches and can run lighter. Person-based with a sparse-but-prolific subject benefits from --deep (7 branches) to give the crystallizer enough signal.

If the user passes --deep with no other input (e.g., /craft:become --deep), treat the remaining args as empty and fall through to the "If no args" branch below.

Read the full file on GitHub · 368 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. 6d ago First seen · 368 lines · 39 tokens per session scan A f3ec436bb962

Subscribe to this mod's changes

become is a command published in the GitHub repository drobins25/craft (53 stars, last pushed today), licensed MIT. It adds 39 tokens to every session and 4,710 once invoked, about $0.0002 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.