io.github.cyanheads/met-museum-mcp-server
REMOTE · MET-MUSEUM.CASEYJHAND.COM · 2 COMPONENTS · SCANNED SEP 22
MET Museum collection via MCP — 500K+ artworks, metadata, provenance, open-access images.
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 Security66
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 3 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability62
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1608 tokens (~536/item across 3 items; 3 tools + 0 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
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
How do I install the io.github.cyanheads/met-museum-mcp-server server?
io.github.cyanheads/met-museum-mcp-server is a hosted endpoint at https://met-museum.caseyjhand.com/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 · met-museum.caseyjhand.com
claude mcp add --transport http cyanheads-met-museum-mcp-server 'https://met-museum.caseyjhand.com/mcp'
{
"mcpServers": {
"cyanheads-met-museum-mcp-server": {
"url": "https://met-museum.caseyjhand.com/mcp"
}
}
} {
"servers": {
"cyanheads-met-museum-mcp-server": {
"type": "http",
"url": "https://met-museum.caseyjhand.com/mcp"
}
}
} [mcp_servers.cyanheads-met-museum-mcp-server] url = "https://met-museum.caseyjhand.com/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"cyanheads-met-museum-mcp-server": {
"type": "remote",
"url": "https://met-museum.caseyjhand.com/mcp",
"enabled": true
}
}
} openclaw mcp add cyanheads-met-museum-mcp-server --url 'https://met-museum.caseyjhand.com/mcp' --transport streamable-http
mcp_servers:
cyanheads-met-museum-mcp-server:
url: "https://met-museum.caseyjhand.com/mcp" {
"McpServers": {
"cyanheads-met-museum-mcp-server": {
"Transport": "http",
"Url": "https://met-museum.caseyjhand.com/mcp"
}
}
} assistant mcp add cyanheads-met-museum-mcp-server -t streamable-http -u 'https://met-museum.caseyjhand.com/mcp'
{
"mcpServers": {
"cyanheads-met-museum-mcp-server": {
"type": "http",
"url": "https://met-museum.caseyjhand.com/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.
- 19 Sept 26 0
- Server version: 0.5.2 → 0.5.3 functional
- 14 Sept 26 0
- Server version: 0.5.1 → 0.5.2 functional
- 10 Sept 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Tool “met_get_object” rewrote its description, which is the text the model reads security
- Tool “met_search_collections” rewrote its description, which is the text the model reads security
- Schema quality: 344 → 536 ▼ functional
- Schema quality: 344 → 440 ▼ functional
- Schema quality: 344 → 420 ▼ functional
- Server version: 0.5.0 → 0.5.1 functional
- Server version: 0.4.0 → 0.5.0 functional
- Server version: 0.2.6 → 0.4.0 functional
- “met_search_collections” reworded the description of “medium” cosmetic
- “met_search_collections” reworded the description of “departmentId” cosmetic
- “met_search_collections” reworded the description of “geoLocation” cosmetic
- “met_search_collections” reworded the description of “isOnView” cosmetic
- “met_search_collections” reworded the description of “dateBegin” cosmetic
- “met_search_collections” reworded the description of “dateEnd” cosmetic
- “met_get_object” reworded the description of “objectIDs” cosmetic
- “met_search_collections” reworded the description of “isPublicDomain” cosmetic
- “met_search_collections” reworded the description of “isHighlight” cosmetic
- “met_search_collections” reworded the description of “hasImages” cosmetic
- 9 Sept 26 0
- Stability: 0.97 → pass security
- 8 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 7 Sept 26 −1
- Stability: pass → 0.93 functional
- 26 Aug 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 0
- Stability: 0.97 → pass security
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 22 Sept 2026 · Probed https://met-museum.caseyjhand.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=caseyjhand.com | CN=WE1,O=Google Trust Services,C=US | 4 Sept 2026 | 3 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | a6985204ed51ae050e7738aa6be668e9 |
| SANs: caseyjhand.com, *.caseyjhand.com | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of met-museum.caseyjhand.com. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| caseyjhand.com. | present | 2371 | 13 | Verified |
| met-museum.caseyjhand.com. | Verified address RRset verified with the apex keys |
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=63072000; includeSubDomains; preload |
| x-content-type-options | nosniff |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://met-museum.caseyjhand.com/mcp | Verified | 200 | |
| http (plaintext) | http://met-museum.caseyjhand.com/mcp | HTTPS enforced | 301 | https://met-museum.caseyjhand.com/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 →
met_get_object Get Met Objects ~197
Fetch full records for one or more Met Museum object IDs. Accepts up to 20 IDs per call and returns partial success — a single 404 does not fail the whole batch; per-ID failures are reported separately. Object IDs come from met_search_collections. Non-public-domain objects return empty image URLs. The constituents array is null for anonymous or unattributed works; tags and measurements are null when the Met records none. Records are returned whole and never truncated, so a batch of unusually large records may return fewer than requested — any that did not fit are listed in deferred[] with their sizes, to be re-requested in a follow-up call.
| Name | Type | Req | Description |
|---|---|---|---|
| objectIDs | array | yes | One or more Met object IDs to fetch. Maximum 20 per call. IDs come from met_search_collections. A repeated ID is fetched and returned once, at its first position. Partial failures are reported per ID… |
| Name | Type | Req | Description |
|---|---|---|---|
| deferred | array | – | Records that were fetched but did not fit the call’s cumulative budget on serialized structuredContent bytes, in request order. Re-call met_get_object with these IDs to retrieve them. Absent when eve… |
| error | object | – | Present when the call failed. Absent on success. |
| failed | array | – | Object IDs that failed to fetch with per-ID error context. |
| notice | string | – | How to retrieve the deferred records, with the budget applied. Present only when the batch byte budget deferred a record. |
| objects | array | – | Successfully fetched objects. |
No examples provided.
met_list_departments List Met Departments ~47
Return the 19 curatorial departments at The Metropolitan Museum of Art, each with its numeric departmentId and display name — the valid values for the met_search_collections departmentId filter.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| departments | array | – | All 19 curatorial departments at The Metropolitan Museum of Art. |
| error | object | – | Present when the call failed. Absent on success. |
No examples provided.
met_search_collections Search Met Collection ~1,175
Search the Metropolitan Museum of Art collection by keyword and optional filters. Returns the total match count and a page of matching object IDs, which met_get_object resolves to full records. Relevance is keyword-based, not semantic; department and geographic filters narrow results more than a longer query. The medium parameter maps to the classification field (pass "Paintings", "Drawings", etc., not material descriptions like "Oil on canvas"). Every filter draws on a partial upstream index, so a filtered search omits some objects whose own record satisfies the filter — the results are not exhaustive, and dropping the filter is what widens them. A filtered search is checked against the same query run unfiltered, so its results match the keyword; when that check is too costly to complete the page is returned unchecked and the response says so in its notice. isPublicDomain selects CC0-licensed images; hasImages also includes copyrighted works. isPublicDomain and isHighlight are opt-in filters that accept true only; the upstream index is unsound on the false arm. isOnView restricts results to works currently on display in a Met gallery.
| Name | Type | Req | Description |
|---|---|---|---|
| dateBegin | integer | – | Earliest object date (year, inclusive). Negative integers for BCE (e.g., -500 for 500 BCE). Requires dateEnd. The range is a partial index like the other filters: it omits some objects whose own reco… |
| dateEnd | integer | – | Latest object date (year, inclusive). Negative integers for BCE. Requires dateBegin. The range is a partial index like the other filters: it omits some objects whose own record dates them inside it. |
| departmentId | integer | – | Restrict results to one curatorial department. Valid IDs come from met_list_departments — the Met exposes a sparse set (roughly 1–21, with gaps); an unrecognized ID is rejected with an invalid_depart… |
| geoLocation | array | – | Filter by geographic origin. Each value is matched broadly against geography fields and artist nationality. Multiple values are AND-combined — ["France", "Egypt"] returns objects associated with both… |
| hasImages | boolean | – | When true, restricts results to objects that have at least one associated image, including copyrighted works whose images cannot be reproduced. A partial index like every filter here: it omits some o… |
| isHighlight | boolean | – | Opt-in filter, true only — omit it rather than passing false, which the upstream index answers unsoundly. Selects objects the Met has designated as highlights — major works central to the collection.… |
| isOnView | boolean | – | When true, restricts results to objects currently on display in a Met gallery. A partial index like the other filters — it omits some objects that are on view, so absence from the results is not evid… |
| isPublicDomain | boolean | – | Opt-in filter, true only — omit it rather than passing false, which the upstream index answers unsoundly. Selects objects released under CC0 open access, which return direct high-resolution image URL… |
| limit | integer | – | Maximum number of object IDs to return from the full result set. The Met search returns every match (up to tens of thousands); this caps how many IDs are returned. |
| medium | string | – | Filter by object classification (e.g., "Paintings", "Drawings", "Prints", "Ceramics", "Sculpture", "Photographs", "Textiles"). Maps to the classification field on the object, not the materials/medium… |
| offset | integer | – | Zero-based index into the full result set to start from (default 0). The nextOffset from a previous response is the value to pass here for the next page; a broad query carries the same timeout risk o… |
| q | string | yes | Keyword query, matched across title, artist name, culture, medium, tags, and other text fields. Broad terms return large ID sets. |
| Name | Type | Req | Description |
|---|---|---|---|
| error | object | – | Present when the call failed. Absent on success. |
| nextOffset | – | – | The offset to pass on the next call to continue paging, or null when the result set is exhausted (truncated is false). |
| notice | string | – | Present only when a filtered search could not be checked against the unfiltered query. That check is best-effort; when it does not complete the page is returned uncorrected and may contain objects un… |
| objectIDs | array | – | Object IDs for this page, up to `limit` results. |
| offset | integer | – | The resolved offset this page was read from — the offset input after its default of 0. Compare it against total: when offset is greater than or equal to total the page is empty because the offset ran… |
| remaining | integer | – | Count of matching object IDs after this page: total − (offset + returned), floored at 0. 0 means this is the last page. |
| returned | integer | – | Count of object IDs in this response — may be less than `total` when the full result set was truncated by `limit`. |
| total | integer | – | Total number of matching objects in the Met collection (may far exceed the returned IDs). |
| truncated | boolean | – | True when matching IDs remain beyond this page (offset + returned < total); false when this page is the last. |
No examples provided.
What is the io.github.cyanheads/met-museum-mcp-server server?
io.github.cyanheads/met-museum-mcp-server is listed in the public MCP registry as io.github.cyanheads/met-museum-mcp-server. MET Museum collection via MCP, 500K+ artworks, metadata, provenance, open-access images. This page covers its hosted endpoint (https://met-museum.caseyjhand.com/mcp).
Is the io.github.cyanheads/met-museum-mcp-server server safe to use?
io.github.cyanheads/met-museum-mcp-server scores 80 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 io.github.cyanheads/met-museum-mcp-server server expose?
io.github.cyanheads/met-museum-mcp-server exposes 3 tools: met_list_departments, met_search_collections, met_get_object. Their descriptions and schemas cost roughly 1,419 tokens of context every time the server is loaded.
Does the io.github.cyanheads/met-museum-mcp-server server require authentication?
No. We connected to io.github.cyanheads/met-museum-mcp-server without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the io.github.cyanheads/met-museum-mcp-server server still maintained?
io.github.cyanheads/met-museum-mcp-server 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.