ase-code-craft

A workflow for creating a new source-code feature from scratch.

In plain words
What is it for?
Use it to start a feature task, clarify what should be built, assign it an identifier, and coordinate the implementation.
Why use it?
It turns a feature request into a tracked coding task and guides the work through the project’s coding process.

Skill for Claude CodeCodex

View the source file rse/ase
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 skills/rse/ase/ase-code-craft
Any agent
npx skills add rse/ase --skill ase-code-craft
Clone the repo
git clone --depth 1 https://github.com/rse/ase

Made for: Claude Code, Codex.

Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,510 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 $0.00030 $0.02510
Opus 5 $0.00015 $0.01255
Sonnet 5 $0.00006 $0.00502
Haiku 4.5 $0.00003 $0.00251

Measured 2d ago against content hash 7299dc07b87a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ase-code-craft 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 2d 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.

plugin/skills/ase-code-craft/SKILL.md · 265 lines

How it starts

The opening of the file, as written. The whole thing — 265 lines — stays where its author put it; the contents beside it link to each section on GitHub.

@${CLAUDE_SKILL_DIR}/../../meta/ase-control.md @${CLAUDE_SKILL_DIR}/../../meta/ase-skill.md @${CLAUDE_SKILL_DIR}/../../meta/ase-dialog.md @${CLAUDE_SKILL_DIR}/../../meta/ase-getopt.md

$ARGUMENTS

@${CLAUDE_SKILL_DIR}/../../meta/ase-format-task.md @${CLAUDE_SKILL_DIR}/../../meta/ase-tenets.md @${CLAUDE_SKILL_DIR}/../../meta/ase-common-code.md

Procedure

    1. Set (set task id to feature) and (set feature empty), call the ase_task_id(id: "<ase-task-id/>", session: "<ase-session-id/>") tool from the ase MCP server to switch the task, and then only output the following :

    2. Set and and call the ase_task_id(id: "<ase-task-id/>", session: "<ase-session-id/>") tool from the ase MCP server to implicitly switch the task. Do not output anything.

    3. **No feature known yet. What is the feature you want to craft?**

      Then set to the response of the user.

    4. Set to a unique task id, derived from , which consists of two lower-case words concatenated with a - character. Then call the ase_task_id(id: "<ase-task-id/>", session: "<ase-session-id/>") tool from the ase MCP server to implicitly switch the task. Do not output anything.

    5. Report the task and feature with the following :

    6. Figure out what the requested to be crafted is about.

    7. Ask the user for clarification if the goal of this crafting is too unclear.

Read the full file on GitHub · 265 lines

Files

What ships with it

1 file 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. 2d ago First seen · 265 lines · 30 tokens per session scan A 7299dc07b87a

Subscribe to this mod's changes

ase-code-craft is a skill published in the GitHub repository rse/ase (47 stars, last pushed 5d ago), licensed Apache-2.0. It adds 30 tokens to every session and 2,510 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.

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