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ase-code-edit

ase-code-edit is a skill for Claude Code from rse/ase. It costs 60 tokens per session (4,144 once invoked), scanned A, original, Apache-2.0.

A one-shot workflow for changing source code from a written request or an analyzer issue ID.

In plain words
What is it for?
Use it to apply a focused code change in place, optionally verify it, and isolate the work in a Git worktree.
Why use it?
It brings code editing, refactoring, problem resolution, optional review, verification, and iteration into one requested operation.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

Part of the ase plugin — 57 skills, 10 agents, 5 hooks shipped together

not rated 60repo +2 changed 4d ago A scan SkillSpector: pass 60 tokens original Apache-2.0

Good fit Use it to apply a focused code change in place, optionally verify it, and isolate the work in a Git worktree.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rse/ase/ase-code-edit
View source ↗ rse/ase ase.tools
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 rse/ase --skill ase-code-edit
Clone the repo
git clone --depth 1 https://github.com/rse/ase

Made for: Claude Code.

Or install ase, the plugin that ships this one along with the rest of its 57 skills, 10 agents, 5 hooks.

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 ase-code-edit

README.md
[![agentmods](https://agentmods.dev/badge/skills/rse/ase/ase-code-edit/github.svg)](https://agentmods.dev/skills/rse/ase/ase-code-edit)
Your own site
<a href="https://agentmods.dev/skills/rse/ase/ase-code-edit"><img src="https://agentmods.dev/badge/skills/rse/ase/ase-code-edit/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 ase-code-edit

Your own site · 80×15
<a href="https://agentmods.dev/skills/rse/ase/ase-code-edit"><img src="https://agentmods.dev/badge/skills/rse/ase/ase-code-edit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,144 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 $0.00060 $0.04144
Opus 5.5 $0.00024 $0.01658
Sonnet 5.5 $0.00012 $0.00829
Haiku 4.5 $0.00006 $0.00414

Measured 4d ago against content hash 1d8dff813cd5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ase-code-edit 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 4d 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-edit/SKILL.md · 393 lines

How it starts

The opening of the file, as written. The whole thing — 393 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

@${CLAUDE_SKILL_DIR}/../../meta/ase-tenets.md @${CLAUDE_SKILL_DIR}/../../meta/ase-common-grill.md @${CLAUDE_SKILL_DIR}/../../meta/ase-common-changeset.md

Procedure

This skill is plan-less: it never composes or persists a task plan and MUST NOT call ase_task_save(...). Instead, it applies the requested edit in place, so the implementing state requires Edit and Write to modify the affected artifacts. Every modification MUST stay restricted to the artifacts the edit actually demands.

On finishing the state <arg1/>, only output the following , which shows the established and , where a still empty or renders as (none):

WHAT:

HOW:

  1. Initialize:

    1. Set (with any leading and trailing whitespace stripped), set and (both empty), and set (empty). Do not output anything.

    2. If is not a positive integer, only output the following and then immediately STOP processing the entire current skill:

    3. Resolve a potentially misparsed former boolean --worktree option:

  2. Iterate:

    Perform the states (1) querying, (2) discovering, (3) grilling, (4) implementing, and (5) verifying below as one iteration. Without --loop perform exactly one iteration. Under --loop repeat the iteration until the querying state receives a STOP SKILL result. Do not output anything in this item.

  3. State: querying:

      1. In the following, you MUST NOT use your built-in tool! Instead, you MUST just show a custom dialog according to the expanded custom-dialog definition. You MUST closely follow this definition. Its only answer option is the fixed STOP SKILL, so the user normally answers with the edit query in one free-text reply:

      2. If is STOP SKILL or CANCEL, only output the following and then immediately STOP processing the entire current skill:

        Otherwise, strip any leading OTHER: prefix from and set to the remainder.

Read the full file on GitHub · 393 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. 4d ago Changed · +10 lines 1d8dff813cd5
  2. 5d ago Changed · -103 lines 39b37277897a
  3. 17d ago Changed · -115 lines f9ebc70c6715
  4. 24d ago Changed · +10 lines ae3e114d5cb6
  5. 25d ago Changed · +16 lines caed085329a7
  6. 1mo ago Changed · +80 lines b9c770cdba62
  7. 1mo ago First seen · 495 lines · 60 tokens per session scan A 9a62c5a7553c

Subscribe to this mod's changes

ase-code-edit is a skill published in the GitHub repository rse/ase (60 stars, last pushed yesterday), licensed Apache-2.0. It adds 60 tokens to every session and 4,144 once invoked, about $0.0002 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 2026-08-30.

Claude CodeDebuggingagentic-aiagentic-codinganalyzingartificial-intelligencesoftware-engineering
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