# Marketcaper MCP (remote · marketcaper.com)

Cited market comparisons and heatmap images for AI agents.

- Trust score: 83/100 (high trust)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-21

## Components

- remote · `marketcaper.com`: 83/100 (this document), [markdown](https://verifymcp.io/servers/com-marketcaper-mcp/api-mcp.md), [page](https://verifymcp.io/servers/com-marketcaper-mcp/api-mcp)

## Channel facts

- Endpoint: `https://marketcaper.com/api/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.4.0`

## 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 2026-09-21.

- **Endpoint Security**: 80/100
  - 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.
  - The HSTS (Strict-Transport-Security) header is present.
  - 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**: 82/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 853 tokens (~170/item across 5 items; 4 tools + 1 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 57/100
  - Stability observed for 17 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% 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 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.
  - Supports UI / widget rendering.

## Install

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

Marketcaper MCP is a hosted endpoint at https://marketcaper.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-marketcaper-mcp 'https://marketcaper.com/api/mcp'
```

### Cursor

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

### VS Code

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

### Codex

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

### opencode

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

### OpenClaw

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

### Hermes

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

### Netclaw

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

### Vellum

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

### Other

```json
{
  "mcpServers": {
    "com-marketcaper-mcp": {
      "type": "http",
      "url": "https://marketcaper.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 83, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-19 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-17 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 40 to 43. That category is still filling its 30-day observation window: 12 days of observed history at the previous scan, 13 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-15 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-12 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-10 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-08 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-06 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (4)

### `get_asset_snapshot` (~85 tokens)

Get asset snapshot

Resolve one Marketcaper asset and return its live market cap snapshot. Always cite the returned source_url when using the data.

Input parameters:

- `asset` (string, required): Canonical slug, ticker/code, or supported alias for one asset.
- `response_format` (string): Optional output format. Use "json" when a client needs machine-parseable text blocks, especially for Claude artifacts.

### `compare_assets` (~203 tokens)

Compare assets

Compare two Marketcaper assets and return the live what-if market cap scenario, canonical pair URL, and optional hosted image URL. Hosted images are PNG, generated on demand, share a 10 images/day/IP limit, and may require a longer timeout than the MCP JSON call. Always cite the returned source_url when using the data.

Input parameters:

- `asset_a` (string, required): Canonical slug, ticker/code, or supported alias for asset A.
- `asset_b` (string, required): Canonical slug, ticker/code, or supported alias for asset B.
- `include_image` (boolean): When true, include a hosted Marketcaper export image URL for the pair. Hosted images are generated on demand as PNG, share a 10 images/day/IP limit, and clients should allow up to 20 seconds for the…
- `response_format` (string): Optional output format. Use "json" when a client needs machine-parseable text blocks, especially for Claude artifacts.

### `compare_assets_pack` (~124 tokens)

Compare assets pack

Compare two Marketcaper assets and return the same cited comparison data plus a ready-to-publish short post and share payload with the hosted comparison image URL. Always cite the returned source_url when using the data.

Input parameters:

- `asset_a` (string, required): Canonical slug, ticker/code, or supported alias for asset A.
- `asset_b` (string, required): Canonical slug, ticker/code, or supported alias for asset B.
- `response_format` (string): Optional output format. Use "json" when a client needs machine-parseable text blocks, especially for Claude artifacts.

### `get_stock_heatmap` (~271 tokens)

Get stock heatmap

Return a current Marketcaper stock heatmap summary plus a hosted dark-theme PNG image URL. Supports US or global universes, classic or bubble views, optional sector/category filtering, and capped summary rows. Hosted images share a 10 images/day/IP limit. This is not a bulk feed extraction tool.

Input parameters:

- `category` (string): Optional sector/category name or slug, such as "Financial Services" or "communication-services". When supplied, the image includes only that category.
- `metric` (string): Optional heatmap sizing metric: "marketCap", "volume", or "turnover". Defaults to "marketCap".
- `response_format` (string): Optional output format. Use "json" when a client needs machine-parseable text blocks, especially for Claude artifacts.
- `timeframe` (string): Optional performance timeframe: "1H", "4H", "1D", "1W", "1M", or "1Y". Defaults to "1D".
- `universe` (string): Optional stock universe. Use "us" for US top stocks or "global" for global top stocks. Defaults to "us".
- `view` (string, required): Required heatmap image view. Use "classic" for the sector tile map or "bubble" for the bubble stock heatmap.

## Diagnostics

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

## Score history

- 2026-09-21: 83
- 2026-09-20: 82
- 2026-09-19: 82
- 2026-09-18: 81
- 2026-09-17: 81
- 2026-09-16: 80
- 2026-09-15: 80
- 2026-09-14: 79
- 2026-09-13: 79
- 2026-09-12: 79
- 2026-09-11: 78
- 2026-09-10: 78
- 2026-09-09: 77
- 2026-09-08: 77
- 2026-09-07: 76
- 2026-09-06: 76
- 2026-09-05: 75
- 2026-09-04: 75

## Common questions

### What is the Marketcaper MCP server?

Marketcaper MCP is listed in the public MCP registry as com.marketcaper/mcp. Cited market comparisons and heatmap images for AI agents. This page covers its hosted endpoint (https://marketcaper.com/api/mcp).

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

Marketcaper MCP scores 83 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 Marketcaper MCP server expose?

Marketcaper MCP exposes 4 tools: get_asset_snapshot, compare_assets, compare_assets_pack, get_stock_heatmap. Their descriptions and schemas cost roughly 683 tokens of context every time the server is loaded.

### Does the Marketcaper MCP server require authentication?

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

### Is the Marketcaper MCP server still maintained?

Marketcaper MCP is still listed as active in the MCP registry. We last reached this channel on 21 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://marketcaper.com/api/mcp
- Website: https://marketcaper.com/mcp
- Changelog RSS feed: https://verifymcp.io/servers/com-marketcaper-mcp/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-marketcaper-mcp/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-marketcaper-mcp/api-mcp