OpenApps MCP server

A read-only MCP server at https://theopenapps.com/mcp (Streamable HTTP) with 13 tools and 3 prompts over the ChatGPT, Claude, Cursor and Grok Bot app stores. It needs no sign-in for public data (up to 60 calls a minute per IP address), and every result carries the date its data refers to.

Endpoint: /mcptheopenapps.com
Transport: Streamable HTTP
Tools: 13all read-only
Prompts: 3

Connect

Claude Code. One command adds it for your user:

Terminal

claude mcp add --transport http --scope user openapps https://theopenapps.com/mcp

Claude. Add a custom connector and paste the URL. ChatGPT. Add it as a custom connector with the same URL; deep research and company knowledge use its search and fetch tools. Other clients that read an mcpServers config:

JSON

{
  "mcpServers": {
    "openapps": {
      "url": "https://theopenapps.com/mcp"
    }
  }
}

Tools

Every tool is marked read-only; none changes anything or reaches outside OpenApps. Each tool except search and fetch takes two optional inputs besides its own: response_format (concise, the default, or detailed, which adds descriptions, schemas and series) and context, one short sentence on what the user wants to find out, used only for analytics and never with names or personal details.

Tool	Use it for	Inputs
`charts_get`Store chart with movement	Who ranks where in a store chart, who moved, entered or dropped out, or how a chart looked at a past time.	`store, chart, region?, at?, kinds?, limit?, cursor?`
`changes_list`What changed in a store	Who moved, entered or left a chart, got featured, launched, changed a listing or MCP tools, or left the store, overall or for given apps, since a time.	`store, region?, since?, apps?, types?, limit?, cursor?`
`new_list`New releases in a store	Which apps are new in a store since a time, by launch date or the day they went live.	`store, since?, sort?, limit?, cursor?, category?, kind?`
`featuring_history`Featuring history	When and where apps were featured, per app or home shelf, over up to 30 days.	`store, app?, chart?, region?, since?, at?, limit?, cursor?`
`leaderboards_get`Apps ranked by a metric	Which apps lead a store by a number it publishes, such as Claude plugin installs.	`store, metric, kinds?, limit?, cursor?`
`scores_list`Apps by OpenApps Rank	Which apps are most popular in a store over the last month, by OpenApps Rank across its popularity charts.	`store, chart?, limit?, cursor?`
`apps_search`Find apps by name or publisher	An app's ref for apps_profile, or which apps match a word in their name, description or publisher.	`query, publisher?, store?, kind?, limit?, cursor?`
`apps_profile`App profiles	Up to 10 apps: what each is and who publishes it, where it ranks now and the tools its MCP server exposes.	`apps, include?`
`stores_get`Stores, regions and charts	Which stores are tracked, how many listings each has, and which regions, charts and metrics exist.	`store?`
`market_get`Store and MCP ecosystem statistics	How big a store is, launches per week, its mix of kinds, and how MCP servers are built.	`store?`
`mcp_toolset_get`MCP server toolset and changes	Which tools an MCP server exposes, how it names, describes and annotates them, and what changed since a time.	`app \| server, at?, diff_from?`
`search`Search OpenApps	For ChatGPT deep research and company knowledge: apps, charts and MCP servers, returning ids for fetch.	`query`
`fetch`Fetch an OpenApps result	Fetches a result that search returned, as text with its OpenApps link.	`id`

Prompts

Three prompts turn common questions into a sequence of tool calls:

Prompt	What it does	Arguments
`weekly_brief`Weekly brief on a store	The last 7 days in one store: movers, featuring, launches and MCP toolset changes.	`store, region?`
`competitor_watch`Watch a set of apps	Up to 10 apps compared: ranks, metrics, featuring and tool changes over the last 7 days.	`apps`
`audit_my_server`Audit an MCP server against the ecosystem	A tracked server's tools (names, descriptions, annotations, schemas) checked against patterns across every open server we see.	`server`

A call, step by step

Ask your assistant "Which Claude connectors are climbing right now?" and it calls charts_get on the connectors' trending list:

tools/call

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "charts_get",
    "arguments": {
      "store": "claude",
      "chart": "connectors:trending",
      "limit": 5,
      "context": "Which Claude connectors are gaining attention"
    }
  }
}

The result holds the rows with their previous positions, plus meta.as_of and the chart's OpenApps link, so the answer can cite the date and link back. Read rank changes with care: most movement below #50 is other listings arriving. How to read rank changes.

Sign-in and limits

Public data needs no sign-in. To connect your account, sign in with OAuth (scope catalog:read) or send an API key as Authorization: Bearer oa_…. Tokens issued for /mcp don't work on /v1, and the reverse.
Without a key, tools/call requests count against 60 a minute per IP address, at the depth of the public pages. Signed in with a key or OAuth, they count against 600 a minute per account, at its plan's depth: a free account's (every country, 500 rows), or with Pro every row and all history. Over a limit you get a JSON-RPC error with retry_after_seconds.
Send one JSON-RPC message per POST. Batches are refused.