Marketcaper MCP
REMOTE · MARKETCAPER.COM · SCANNED SEP 21
Cited market comparisons and heatmap images for AI agents.
Available components
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. How we score → Why this is hard to score →
Endpoint Security80
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability82
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (excellent).Pass
- 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. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management57
- Stability observed for 17 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
- Supports UI / widget rendering.Pass
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.
remote · marketcaper.com
claude mcp add --transport http com-marketcaper-mcp 'https://marketcaper.com/api/mcp'
{
"mcpServers": {
"com-marketcaper-mcp": {
"url": "https://marketcaper.com/api/mcp"
}
}
} {
"servers": {
"com-marketcaper-mcp": {
"type": "http",
"url": "https://marketcaper.com/api/mcp"
}
}
} [mcp_servers.com-marketcaper-mcp] url = "https://marketcaper.com/api/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"com-marketcaper-mcp": {
"type": "remote",
"url": "https://marketcaper.com/api/mcp",
"enabled": true
}
}
} openclaw mcp add com-marketcaper-mcp --url 'https://marketcaper.com/api/mcp' --transport streamable-http
mcp_servers:
com-marketcaper-mcp:
url: "https://marketcaper.com/api/mcp" {
"McpServers": {
"com-marketcaper-mcp": {
"Transport": "http",
"Url": "https://marketcaper.com/api/mcp"
}
}
} assistant mcp add com-marketcaper-mcp -t streamable-http -u 'https://marketcaper.com/api/mcp'
{
"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.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 21 Sept 26 +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.
- 19 Sept 26 +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.
- 17 Sept 26 +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.
- 15 Sept 26 +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.
- 12 Sept 26 +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.
- 10 Sept 26 +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.
- 8 Sept 26 +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.
- 6 Sept 26 +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.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 21 Sept 2026 · Probed https://marketcaper.com/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=marketcaper.com | CN=YE1,O=Let's Encrypt,C=US | 10 Sept 2026 | 9 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 5b66a36657f617bb135577cfff81e05031d |
| SANs: *.marketcaper.com, marketcaper.com | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of marketcaper.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| marketcaper.com. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000 |
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(), microphone=(), geolocation=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://marketcaper.com/api/mcp | Verified | 200 | |
| http (plaintext) | http://marketcaper.com/api/mcp | HTTPS enforced | 301 | https://marketcaper.com/api/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
compare_assets Compare assets ~203
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.
| Name | Type | Req | Description |
|---|---|---|---|
| asset_a | string | yes | Canonical slug, ticker/code, or supported alias for asset A. |
| asset_b | string | yes | 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. |
No output schema declared.
No examples provided.
compare_assets_pack Compare assets pack ~124
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.
| Name | Type | Req | Description |
|---|---|---|---|
| asset_a | string | yes | Canonical slug, ticker/code, or supported alias for asset A. |
| asset_b | string | yes | 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. |
No output schema declared.
No examples provided.
get_asset_snapshot Get asset snapshot ~85
Resolve one Marketcaper asset and return its live market cap snapshot. Always cite the returned source_url when using the data.
| Name | Type | Req | Description |
|---|---|---|---|
| asset | string | yes | 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. |
No output schema declared.
No examples provided.
get_stock_heatmap Get stock heatmap ~271
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.
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | Required heatmap image view. Use "classic" for the sector tile map or "bubble" for the bubble stock heatmap. |
No output schema declared.
No examples provided.
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.