Marketcaper MCP
REMOTE · MARKETCAPER.COM
Cited market comparisons and heatmap images for AI agents.
Available components
Last scanned (1 hour ago)
Scores higher than 96% of remote servers
Reachable. Last reached 6 Nov 2026.
Category Finance and Payments
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. Nothing on it is marked destructive, but we can't show that an anonymous caller can only read: full credit needs the server to list at least one tool and every tool to be verifiably read-only. We use a best-effort check of tool names and descriptions to tell read-only tools from tools that change things, so some genuinely read-only tools may not get full credit. Names that start with a read verb (get, list, read, search and similar) and accurate readOnlyHint annotations help. Meet that to earn full credit, or require authorisation. 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 Usability81
- 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 881 tokens (~176/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 Management100
- No destabilizing schema changes in the last 30 days.Pass
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
Checks we ran (14)
- TLS certificate
- Authorization
- HTTPS
- HSTS header
- DNSSEC
- Transport
- Schema quality
- Stability
- Tool coverage
- Injection markers
- Destructive annotations
- Judged manipulation
- MCP protocol
- Capabilities
Does not apply to this hosted endpoint (2)
- Supply Chain SecurityScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.
- Provenance & TransparencyScored on package channels only. This is a hosted endpoint, so there is nothing to install or inspect.
The score does not measure everything. What the score does not measure →
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.
- 6 Nov 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 5 Nov 26 +1
- Stability: 0.97 → pass security
- 4 Nov 26 −1
- Stability: pass → 0.97 functional
- 9 Oct 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “compare_assets” rewrote its description, which is the text the model reads security
- Tool “compare_assets_pack” rewrote its description, which is the text the model reads security
- Tool “get_asset_snapshot” rewrote its description, which is the text the model reads security
- Tool “get_stock_heatmap” rewrote its description, which is the text the model reads security
- 4 Oct 26 +1
- Stability: 0.97 → pass security
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 5 Sept 26 0
- Stability: unverified → 0.03 ▲ functional
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 6 Nov 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. | DS published | 19718 | 13 | Verified |
| marketcaper.com. | No DS | 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 ~214
Compare two Marketcaper assets and return relative size or a supported hypothetical price-at-size scenario, the canonical pair URL, and an 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. Check the input observation times and 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 ~123
Compare two Marketcaper assets and return the same cited comparison data plus a draft short post for review 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 ~90
Resolve one Marketcaper asset and return its reported size snapshot. Check the input observation time and 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 ~277
Return a Marketcaper stock heatmap summary with reported observation and update times, 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.
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'
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 89 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 704 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 6 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What did VerifyMCP test on the Marketcaper MCP server?
VerifyMCP ran 14 checks on Marketcaper MCP, covering TLS certificate, Authorization, HTTPS, HSTS header and 10 more. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.