# rankcusp (remote · rankcusp.com)

App Store keyword ranks, the 11-30 cusp band, metadata audits and rival positions.

- Trust score: 81/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-22

## Components

- remote · `rankcusp.com`: 81/100 (this document), [markdown](https://verifymcp.io/servers/com-rankcusp-aso/api-mcp.md), [page](https://verifymcp.io/servers/com-rankcusp-aso/api-mcp)

## Channel facts

- Endpoint: `https://rankcusp.com/api/mcp`
- Transports: `streamable-http`
- Auth: `required`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-22.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 75/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 918 tokens (~102/item across 9 items; 9 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 86/100
  - Stability check failed: schema churn in the 28 days we've observed: 0 tool removals, 0 breaking changes, 1 auth/transport breaks, 0 additions.
- **Tool Coverage**: 96/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 89% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 9 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the rankcusp MCP server?

rankcusp is a hosted endpoint at https://rankcusp.com/api/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http com-rankcusp-aso 'https://rankcusp.com/api/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-rankcusp-aso": {
      "url": "https://rankcusp.com/api/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-rankcusp-aso": {
      "type": "http",
      "url": "https://rankcusp.com/api/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-rankcusp-aso]
url = "https://rankcusp.com/api/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-rankcusp-aso": {
      "type": "remote",
      "url": "https://rankcusp.com/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-rankcusp-aso --url 'https://rankcusp.com/api/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-rankcusp-aso:
    url: "https://rankcusp.com/api/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-rankcusp-aso": {
      "Transport": "http",
      "Url": "https://rankcusp.com/api/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-rankcusp-aso -t streamable-http -u 'https://rankcusp.com/api/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-rankcusp-aso": {
      "type": "http",
      "url": "https://rankcusp.com/api/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-21 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 80 to 83.

### 2026-09-19 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 73 to 76.

### 2026-09-17 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 66 to 70.

### 2026-09-14 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 56 to 60.

### 2026-09-12 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 50 to 53.

### 2026-09-10 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 46.

### 2026-09-08 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 36 to 40.

### 2026-09-06 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 30 to 33.

## MCP tools (9)

### `list_apps` (~32 tokens)

Lists the apps and rivals tracked on the account. The appId and storefront codes the other tools want come from here.

### `list_keywords` (~121 tokens)

Lists an app's keywords in one storefront, with rank, popularity and difficulty.

Input parameters:

- `appId` (string, required): App Store app id
- `country` (string, required): Storefront code, e.g. us, tr, de
- `cuspOnly` (boolean): The 11-30 band only: the ones that reach the first page with the least effort.
- `limit` (number): How many rows, at most 200.
- `offset` (number)
- `rankedOnly` (boolean): Only the ones ranking in the top 200.

### `get_keyword` (~87 tokens)

One keyword: its rank, its scores, its first page and the verdict - should it be targeted, and why. Every unmeasured value comes back null, never zero.

Input parameters:

- `appId` (string, required): App Store app id
- `country` (string, required): Storefront code, e.g. us, tr, de
- `keyword` (string, required): The phrase to look up.

### `audit_metadata` (~128 tokens)

Audits a draft title, subtitle and 100-character keyword field against Apple's rules and against each other. Returns what is wasted, what Apple will actually index, and the field rewritten without the waste. Nothing is submitted anywhere - this only reads the text you pass in.

Input parameters:

- `country` (string, required): Storefront code, e.g. us, tr, de
- `keywordField` (string): The 100-character field, comma-separated, as App Store Connect wants it.
- `subtitle` (string): Up to 30 characters.
- `title` (string): Up to 30 characters.

### `country_priorities` (~75 tokens)

Ranks the storefronts an app is tracked in by how much is winnable there: how many keywords sit in the cusp band, how many already reach the top ten, and whether the rivals' ratings leave an opening. Answers which market to work on first.

Input parameters:

- `appId` (string, required): App Store app id

### `ranking_keywords` (~152 tokens)

Which keywords an app is already ranking for, from the pooled record of every search this product has run. Works on any App Store id, not only the ones on this account - point it at a rival to read theirs. Apple publishes no endpoint for this; the answer is only as wide as what has been observed, so an app nobody has swept near returns little.

Input parameters:

- `appId` (string, required): App Store app id
- `country` (string): Storefront code, e.g. us, tr, de
- `limit` (number): How many rows, at most 200.
- `maxRank` (number): Only positions at or above this, e.g. 30 for the reachable band.

### `keyword_competitors` (~95 tokens)

Who ranks for a phrase, deeper than the ten the first page carries. Use it to find the rivals a first-page reading misses - an app at 40 for a phrase you sit at 60 for is the one to study.

Input parameters:

- `country` (string, required): Storefront code, e.g. us, tr, de
- `keyword` (string, required): The phrase to look up.
- `limit` (number)

### `add_keywords` (~102 tokens)

Adds keywords to an app's tracked set in one storefront. Takes a list or a comma-separated paste. They arrive unscored - scoring costs requests to Apple and happens on the collector's schedule - so do not read a null popularity here as a zero.

Input parameters:

- `appId` (string, required): App Store app id
- `country` (string, required): Storefront code, e.g. us, tr, de
- `keywords` (array, required): The phrases to track.

### `cusp_actions` (~71 tokens)

The keywords in the 11-30 band, ordered by popularity. The work list a metadata edit pays off on most.

Input parameters:

- `appId` (string, required): App Store app id
- `country` (string, required): Storefront code, e.g. us, tr, de
- `limit` (number)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-rankcusp-aso/api-mcp#diagnostics

## Score history

- 2026-09-22: 81
- 2026-09-21: 81
- 2026-09-20: 80
- 2026-09-19: 80
- 2026-09-18: 79
- 2026-09-17: 79
- 2026-09-16: 78
- 2026-09-15: 78
- 2026-09-14: 78
- 2026-09-13: 77
- 2026-09-12: 77
- 2026-09-11: 76
- 2026-09-10: 76
- 2026-09-09: 75
- 2026-09-08: 75
- 2026-09-07: 74
- 2026-09-06: 74
- 2026-09-05: 73
- 2026-09-04: 73
- 2026-09-03: 72
- 2026-09-02: 72
- 2026-09-01: 71
- 2026-08-31: 71
- 2026-08-30: 71
- 2026-08-29: 75
- 2026-08-28: 74
- 2026-08-27: 74
- 2026-08-26: 73
- 2026-08-25: 71

## Common questions

### What is the rankcusp MCP server?

rankcusp is an MCP server listed in the public MCP registry as com.rankcusp/aso. App Store keyword ranks, the 11-30 cusp band, metadata audits and rival positions. This page covers its hosted endpoint (https://rankcusp.com/api/mcp).

### Is the rankcusp MCP server safe to use?

rankcusp scores 81 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the rankcusp MCP server expose?

rankcusp exposes 9 tools: list_apps, list_keywords, get_keyword, audit_metadata, country_priorities, and 4 more. Their descriptions and schemas cost roughly 863 tokens of context every time the server is loaded.

### Does the rankcusp MCP server require authentication?

No. We connected to rankcusp without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the rankcusp MCP server still maintained?

rankcusp is still listed as active in the MCP registry. We last reached this channel on 22 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://rankcusp.com/api/mcp
- Authorisation metadata: https://rankcusp.com/.well-known/oauth-protected-resource/api/mcp
- Website: https://rankcusp.com/en/api
- Changelog RSS feed: https://verifymcp.io/servers/com-rankcusp-aso/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-rankcusp-aso/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-rankcusp-aso/api-mcp