market-movers

market-movers is a skill for Claude Code from Eronred/aso-skills. It costs 98 tokens per session (1,132 once invoked), scanned A, original, MIT.

A skill for comparing App Store chart snapshots to find apps whose rankings have risen, fallen, newly entered, or left the charts. It also provides context about the selected chart, category, country, and apps.

In plain words
What is it for?
Use it to find top gainers and losers, detect breakout apps, identify new chart entries, or investigate a particular app’s ranking change.
Why use it?
It turns raw chart positions into a focused view of market movement and the apps driving it.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the aso-skills plugin — 40 skills shipped together

Good fit Use it to find top gainers and losers, detect breakout apps, identify new chart entries, or investigate a particular app’s ranking change.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/eronred/aso-skills/market-movers
About the project

ASO & App Marketing Skills is a collection of AI-agent skills for improving mobile-app discoverability and marketing through keyword research, metadata optimization, competitor analysis, and market data. It is for indie developers, app marketers, and growth teams using compatible coding agents, and the catalogue contains the skills and instructions they use.

Eronred/aso-skills · 1,847 stars · on GitHub · appeeky.com

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 Eronred/aso-skills --skill market-movers
Clone the repo
git clone --depth 1 https://github.com/Eronred/aso-skills

Made for: Claude Code.

Or install aso-skills, the plugin that ships this one along with the rest of its 40 skills.

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 market-movers

README.md
[![agentmods](https://agentmods.dev/badge/skills/eronred/aso-skills/market-movers/github.svg)](https://agentmods.dev/skills/eronred/aso-skills/market-movers)
Your own site
<a href="https://agentmods.dev/skills/eronred/aso-skills/market-movers"><img src="https://agentmods.dev/badge/skills/eronred/aso-skills/market-movers/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 market-movers

Your own site · 80×15
<a href="https://agentmods.dev/skills/eronred/aso-skills/market-movers"><img src="https://agentmods.dev/badge/skills/eronred/aso-skills/market-movers.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 98 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,132 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
  • Socket pass 18 Mar 2026
  • Snyk pass 5 Mar 2026
  • 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 $0.00098 $0.01132
Opus 5 $0.00049 $0.00566
Sonnet 5 $0.00020 $0.00226
Haiku 4.5 $0.00010 $0.00113

Measured 11d ago against content hash af98ebf0cb40, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

market-movers 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 11d 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.

skills/market-movers/SKILL.md · 138 lines

How it starts

The opening of the file, as written. The whole thing — 138 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Market Movers Analysis

You are an expert in App Store chart dynamics. Your goal is to analyze rank changes between chart snapshots, identify significant movements, and provide actionable insights about what's driving gains and losses.

Initial Assessment

  1. Check for app-marketing-context.md — read it for the user's app and category
  2. Ask for chart type: top-free (default), top-paid, or top-grossing
  3. Ask for category: all charts or specific genre (e.g. Games, Productivity)
  4. Ask for country (default: US)
  5. Ask what they want: full overview, gainers only, losers only, or new entries

Data Collection

Use these MCP tools to gather chart movement data:

  1. get_market_movers — Top gainers, losers, new entries, dropped out
  2. get_market_activity — Chronological feed of all significant movements
  3. get_category_top — Current chart standings for context
  4. get_app — Deep dive on specific apps showing movement

Analysis Framework

1. Chart Movement Summary

Metric Value
Period compared [date] vs [date]
Chart / Country top-free / US
Total significant moves
New entries
Dropped out
Biggest gainer +X positions
Biggest loser -X positions

2. Top Gainers Analysis

For each top gainer:

App Rank Change Current Previous Category Rating

For each notable gainer, analyze:

  • What likely drove the surge? (viral moment, feature update, Apple featuring, ad campaign, seasonal)
  • Is the gain sustainable or a spike?
  • What can the user learn from this app's strategy?

3. Top Losers Analysis

For each top loser:

App Rank Change Current Previous Category Rating

For each notable loser, analyze:

  • What might have caused the decline? (competitor launch, bad update, seasonal drop, removed from featuring)
  • Is the drop a concern for the user's category?
  • Does this create an opportunity?

Read the full file on GitHub · 138 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. 11d ago First seen · 138 lines · 98 tokens per session scan A af98ebf0cb40

Subscribe to this mod's changes

market-movers is a skill published in the GitHub repository Eronred/aso-skills (1,847 stars, last pushed 19d ago), licensed MIT. It adds 98 tokens to every session and 1,132 once invoked, about $0.0005 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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