orch-change-feature

orch-change-feature is a skill for Claude Code, Codex from nklofy/code-agent-skills. It costs 49 tokens per session (425 once invoked), scanned A, original, Apache-2.0.

A workflow for changing an existing feature that already works but should behave differently. It updates the tests to describe the new behavior, changes the implementation, reviews the result, and prepares a gated commit.

In plain words
What is it for?
Use it to adjust, extend, or replace the behavior of an existing feature when nothing is broken but the requirements have changed.
Why use it?
It separates an intentional behavior change from a bug fix by recording the new expected result in the tests first.

Skill for Claude CodeCodex

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

Good fit Use it to adjust, extend, or replace the behavior of an existing feature when nothing is broken but the requirements have changed.

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Install with agentmods
npx agentmods add skills/nklofy/code-agent-skills/orch-change-feature
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 nklofy/code-agent-skills --skill orch-change-feature
Clone the repo
git clone --depth 1 https://github.com/nklofy/code-agent-skills

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 orch-change-feature

README.md
[![agentmods](https://agentmods.dev/badge/skills/nklofy/code-agent-skills/orch-change-feature/github.svg)](https://agentmods.dev/skills/nklofy/code-agent-skills/orch-change-feature)
Your own site
<a href="https://agentmods.dev/skills/nklofy/code-agent-skills/orch-change-feature"><img src="https://agentmods.dev/badge/skills/nklofy/code-agent-skills/orch-change-feature/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 orch-change-feature

Your own site · 80×15
<a href="https://agentmods.dev/skills/nklofy/code-agent-skills/orch-change-feature"><img src="https://agentmods.dev/badge/skills/nklofy/code-agent-skills/orch-change-feature.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 425 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 $0.00049 $0.00425
Opus 5 $0.00024 $0.00212
Sonnet 5 $0.00010 $0.00085
Haiku 4.5 $0.00005 $0.00042

Measured 7d ago against content hash d35ee5dfdf5f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

orch-change-feature 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 7d 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.

Origin

Copies of this mod

2 near-identical copies found in the catalogue:

affaan-m-ECC/orch-change-feature/SKILL.md · 44 lines

What it actually says

orch-change-feature

Actor · action · target: orch · change · feature. Thin wrapper over the shared engine in orch-pipeline.

When to Use

  • An existing feature works, but the desired behavior is different ("change", "adjust", "make it also …", "instead of X do Y").
  • Distinguish from siblings:
    • not broken → not orch-fix-defect (no bug to reproduce).
    • not new → not orch-add-feature (the capability already exists).

Operation settings

  • Default size floor: small — most tweaks are a function or two.
  • Phase mask: 0 → (1 only if the new behavior needs research) → light 2 → 4 → 5 → 6.
  • First move (phase 4): update the existing tests to express the new desired behavior, then change the implementation until they pass. Changing the tests first is what separates a tweak from a fix.

How It Works

  1. Run the orch-pipeline engine with the settings above.
  2. Keep the plan light — only standard+ size warrants the full planner pass.
  3. Stop at Gate 1 (plan / changed-test approval) and Gate 2 (pre-commit).
  4. Add security-reviewer if the change touches a security trigger.

Example

orch-change-feature: make nws-poller alert at 2 warnings instead of 3
→ update threshold tests to new spec → change impl to green
→ code-review → commit  [GATE 2: confirm]
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. 7d ago First seen · 44 lines · 49 tokens per session scan A d35ee5dfdf5f

Subscribe to this mod's changes

orch-change-feature is a skill published in the GitHub repository nklofy/code-agent-skills (18 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 49 tokens to every session and 425 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 2026-09-03.