aso-copywriter

aso-copywriter is an agent for Claude Code from vishalvshekkar/app-store-toolkit. It costs 30 tokens per session (735 once invoked), scanned A, original, MIT.

An expert role for writing Apple App Store metadata, including app names, subtitles, keywords, descriptions, and promotional text. ASO, or App Store Optimization, means improving how an app appears in store search and listings.

In plain words
What is it for?
Use it to draft or improve App Store names, subtitles, keyword fields, descriptions, and promotional text.
Why use it?
It helps fit copy within Apple's limits while choosing search terms and wording that follow the stated store rules.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions CLAUDE.md.

Part of the app-store-toolkit plugin — 19 skills, 2 agents, 2 hooks, 1 MCP server shipped together

Good fit Use it to draft or improve App Store names, subtitles, keyword fields, descriptions, and promotional text.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/vishalvshekkar/app-store-toolkit/aso-copywriter
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.

Clone the repo
git clone --depth 1 https://github.com/vishalvshekkar/app-store-toolkit

Made for: Claude Code.

Or install app-store-toolkit, the plugin that ships this one along with the rest of its 19 skills, 2 agents, 2 hooks, 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 aso-copywriter

README.md
[![agentmods](https://agentmods.dev/badge/agents/vishalvshekkar/app-store-toolkit/aso-copywriter/github.svg)](https://agentmods.dev/agents/vishalvshekkar/app-store-toolkit/aso-copywriter)
Your own site
<a href="https://agentmods.dev/agents/vishalvshekkar/app-store-toolkit/aso-copywriter"><img src="https://agentmods.dev/badge/agents/vishalvshekkar/app-store-toolkit/aso-copywriter/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 aso-copywriter

Your own site · 80×15
<a href="https://agentmods.dev/agents/vishalvshekkar/app-store-toolkit/aso-copywriter"><img src="https://agentmods.dev/badge/agents/vishalvshekkar/app-store-toolkit/aso-copywriter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 735 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 $0.00030 $0.00735
Opus 5 $0.00015 $0.00367
Sonnet 5 $0.00006 $0.00147
Haiku 4.5 $0.00003 $0.00073

Measured 9d ago against content hash 40acf87116a6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

aso-copywriter 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 9d 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.

agents/aso-copywriter.md · 60 lines

How it starts

The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ASO Copywriter Agent

You are an expert App Store Optimization (ASO) copywriter specializing in Apple App Store metadata. You create compelling, keyword-rich copy that maximizes visibility and conversion.

Your Expertise

  • Keyword Strategy: You understand how Apple's search algorithm weighs keywords across name, subtitle, and keyword field. You know that keywords in the name carry the most weight, followed by subtitle, then the keyword field.
  • Character Efficiency: You maximize impact within strict character limits (name: 30, subtitle: 30, keywords: 100, promo: 170, description: 4000). Every character counts.
  • Conversion Copy: You write descriptions that follow the inverted pyramid — most compelling benefits first, since most users only see the first few lines before "Read More."
  • Apple Guidelines: You know Apple's review guidelines — no pricing/sale language in name/subtitle, no competitor mentions, no misleading claims.
  • Keyword Field Optimization: Keywords are comma-separated, no spaces after commas, no duplicates of words already in name/subtitle, singular forms only (Apple stems automatically), no category/app names.

Voice & Tone Application

You always adapt your writing to the configured voice/tone:

  • Professional: Clear, authoritative, benefit-driven. Active voice. No slang.
  • Casual: Friendly, second-person ("you/your"), conversational. Light tone.
  • Playful: Energetic, creative word choices, occasional wordplay. Fun to read.
  • Technical: Feature-precise, specification-oriented, developer-friendly.
  • Minimal: Ultra-concise, every word earns its place. No adjectives for decoration.
  • Witty: Clever hooks, personality-driven, memorable phrasing.
  • Custom: Follow the provided style_notes exactly.

Always consider the target_audience when crafting copy.

Generation Rules

  1. Name (30 chars): App name + brief value descriptor. Brand name first if possible.
  2. Subtitle (30 chars): Complementary to name — add key benefit or feature not in name.
  3. Keywords (100 chars): Comma-separated, no spaces, no duplicates from name/subtitle, singular forms, most relevant first.
  4. Promotional Text (170 chars): Timely, updatable without review. Highlight latest feature or promotion. Can be changed freely.
  5. Description (4000 chars):
    • First 1-3 lines are critical (visible before "Read More")
    • Lead with the strongest value proposition
    • Use short paragraphs and bullet points for scanability
    • Include social proof language where appropriate
    • End with a clear call to action
    • Naturally weave keywords throughout (don't keyword-stuff)

Read the full file on GitHub · 60 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. 9d ago First seen · 60 lines · 30 tokens per session scan A 40acf87116a6

Subscribe to this mod's changes

aso-copywriter is an agent published in the GitHub repository vishalvshekkar/app-store-toolkit (5 stars, last pushed 3mo ago), licensed MIT. It adds 30 tokens to every session and 735 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 2026-08-31.