AppSigma App Store Data

Metadata, reviews, ratings, chart history and prices of any iOS app. 22 read-only tools, demo key available.

Hosted MCP Server

npx add-mcp 'https://api.appsigma.io/mcp'

Installs into Claude Code, Codex, Cursor and more

Documentation

AppSigma MCP — App Store ASO for your AI agent

appsigma.io/agent · Docs · Pricing

Connect Claude, ChatGPT, Cursor or any MCP client to your App Store data. Your agent reads your keywords, search positions, competitors and reviews, and tells you what to change to climb. It can also research any app in the store: reviews, ratings, charts, prices and release history.

Two hosted MCP servers. Nothing to install or run: add a URL, sign in, approve.

Server	URL	What it does	Cost
Your apps	`https://appsigma.io/mcp`	Track apps, add keywords, follow daily search positions, manage competitors, read store activity and review analysis	Your plan limits apply; the free plan works
The whole App Store	`https://api.appsigma.io/mcp`	22 read-only tools: metadata, reviews, ratings, chart history, prices and in-app purchases of any app	Credits, 1,000 free on a new account

Both servers sign in with OAuth: your client opens AppSigma, you approve, done. No key to paste. The App Store server also accepts an X-API-Key header, and the key demo works without an account.

Ask your agent

"Which keywords am I closest to the top 10 for, and which should I add?"
"Find the keywords I can win and rewrite my App Store subtitle with them."
"What moved this week, and what should I change first?"
"Compare me with my competitors and tell me where I fall behind."
"What do the 1-star reviews of my top 3 competitors complain about?"
"Which apps climbed the top free chart this week, and what did they change?"

Connect

Claude (claude.ai, Claude Desktop)

Settings → Connectors → Add custom connector. Paste https://appsigma.io/mcp, press Connect and approve. Repeat with https://api.appsigma.io/mcp.

ChatGPT

Settings → Apps & Connectors (developer mode on) → add a custom connector. Paste each URL and choose OAuth. ChatGPT opens AppSigma for you to approve.

Claude Code

claude mcp add --transport http appsigma https://appsigma.io/mcp
claude mcp add --transport http appsigma-data https://api.appsigma.io/mcp

Or install this repo as a plugin, which adds both servers and the aso-teardown skill:

claude plugin marketplace add appsigma-io/appsigma-mcp
claude plugin install appsigma@appsigma-mcp

Cursor

Settings → MCP → Add new server, or add to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "appsigma": { "url": "https://appsigma.io/mcp" },
    "appsigma-data": { "url": "https://api.appsigma.io/mcp" }
  }
}

Gemini CLI

gemini extensions install https://github.com/appsigma-io/appsigma-mcp

Cline and other clients

Any client that supports remote Streamable HTTP servers works with the two URLs above. A client without OAuth can use the App Store server with an API key:

{
  "mcpServers": {
    "appsigma-data": {
      "type": "streamableHttp",
      "url": "https://api.appsigma.io/mcp",
      "headers": { "X-API-Key": "demo" }
    }
  }
}

Replace demo with your key from appsigma.io for full access.

Tools

Your apps — `https://appsigma.io/mcp`

Every app tool takes the App Store id of an app your organization tracks.

Tool	Kind	What it does
`get_account`	read	Your plan, used and maximum apps and keywords, markets
`search_apps`	read	Find an app by name or App Store URL
`track_apps`	write	Start tracking apps (finds their keywords and competitors)
`untrack_app`	destructive	Stop tracking an app
`list_tracked_apps`	read	Your apps with visibility, 7-day change, average position
`get_app_overview`	read	ASO summary: movers, ranking distribution, top competitors
`suggest_keywords`	read	Keywords the app ranks for or could win, with traffic and difficulty
`list_keywords`	read	Tracked keywords with position, previous position, traffic, difficulty
`add_keywords`	write	Track up to 50 keywords
`remove_keywords`	destructive	Stop tracking keywords
`get_keyword_history`	read	Daily positions and the top apps for one search
`get_position_changes`	read	Keywords that moved in the last days, biggest change first
`list_competitors`	read	Your app and its saved competitors side by side
`suggest_competitors`	read	Competitor suggestions with overlapping keywords
`add_competitor`	write	Save a competitor
`remove_competitor`	destructive	Delete a saved competitor
`get_store_activity`	read	Versions with release notes, and in-app events
`get_review_insights`	read	Review analysis: sentiment, topics, praise, reviews that need a reply

The whole App Store — `https://api.appsigma.io/mcp`

All tools are read-only. Each call is billed in credits like the REST endpoint it wraps; the cost is in each tool description.

Tool	What it does
`search_applications`	Search the App Store by term
`list_applications`	List and filter the app catalog
`get_application`	One app, full detail
`get_application_reviews`	Customer reviews, filterable by country
`get_application_versions`	Version and release history
`get_application_similars`	Similar apps
`get_application_in_app_purchases`	In-app purchases
`get_application_price_changes`	Price change history
`get_application_editorial_items`	App Store editorial stories featuring the app
`get_application_events`	In-app events of the app
`get_application_chart_history`	Chart position history
`get_application_rating_histogram`	Star-rating histogram over time
`get_application_ratings_by_version`	Ratings by version
`get_application_review_histogram`	Review-count histogram
`get_chart_positions`	Current chart positions by chart, genre and country
`get_chart_history`	Chart history across apps
`get_developer`	One developer
`get_developer_applications`	A developer's apps
`get_developer_events`	In-app events across a developer's apps
`get_editorial_item`	One editorial story
`get_event`	One in-app event
`get_usage`	Your plan, credits left and recent usage (free)

Demo key

X-API-Key: demo needs no account. It covers a curated set of apps and developers, a fixed set of search terms, shallow chart depth and a per-IP rate limit — enough to try every tool.