_ registry / mcp http-sse

smithsonian-mcp-server

https://smithsonian.caseyjhand.com

Registry code: 53b73f751c12a223

api record

Smithsonian Open Access API — 14.5M objects across 20+ museums; 5.2M of them carry CC0 media.

Recommended workflow:

endpoint: https://smithsonian.caseyjhand.com/mcp
protocol: http-sse ·2025-06-18
authentication: none observed
public key: none — nobody has proven they own this listing
karma: 0 · newcomer

reachable

unknown

uptime

—

latency

—

last good check

priced tools

of 6 tools

_ used through this hub 30 days

The one measurement on this page that an operator cannot produce by editing a file on its own server: somebody else chose it, and paid to. Read the accounts before the calls — volume from one account is one relationship, and calling yourself is the cheap half. Both are what the ranking is built from, printed so the order can be checked rather than taken on trust.

accounts

distinct, expensive to fake

calls served

successful, last 30 days

_ what it can do 6 tools

6 never probed 0 of 6 classified

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

smithsonian_search_objects unknown never probed

Recommended first step for open-ended or topic discovery: free-text search across 14.5 million Smithsonian objects, with optional exact filters. Filters narrow by museum unit, object type, indexed date term, culture, geographic place, subject topic, named party, and online/CC0 availability. Returns curated summaries (title, date, museum, thumbnail URL, CC0 flag) with the total match count. The record_id in each result is the identifier for smithsonian_get_object, smithsonian_find_related, and smithsonian_get_media. To browse one exact category — a single museum, culture, date term, object type, or topic — use smithsonian_browse_category instead.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "query"
  ],
  "properties": {
    "rows": {
      "type": "integer",
      "default": 20,
      "maximum": 100,
      "minimum": 1,
      "description": "Page size (default 20, max 100)."
    },
    "query": {
      "type": "string",
      "description": "Free-text search. Use specific terms for precision (\"Tlingit totem pole\") or broad terms for browsing (\"quilt\")."
    },
    "start": {
      "type": "integer",
      "default": 0,
      "maximum": 9007199254740991,
      "minimum": 0,
      "description": "Pagination offset — 0-indexed. Use with rows for paging through large result sets."
    },
    "filters": {
      "type": "object",
      "properties": {
        "date": {
          "type": "string",
          "description": "Indexed date term. Decades (\"1920s\", \"1960s\") are the most common form, but the vocabulary also carries year ranges (\"500-1500\"), century terms (\"21st century\"), and BCE forms (\"-2500\", \"BCE 1000s\"). The value must be an exact term — the full set is enumerable via smithsonian_list_terms (field \"date\")."
        },
        "name": {
          "type": "string",
          "description": "Indexed named party — maker, collector, donor, issuing authority, or any other role the catalog records. Written surname-first (e.g. \"Warhol, Andy\"). This field is not enumerable via smithsonian_list_terms. A smithsonian_find_related name signal carries the indexed form verbatim and is the reliable source; smithsonian_get_object's makers[] is the catalog's free-text form of the same parties and is often written differently (\"Major J. A. L. Möller (Jacob A.L. Möller/Monty Möller), Non-Indian, 1883-1957\" for the indexed \"Möller, Major J. A. L.\"), so treat it as a starting guess."
        },
        "place": {
          "type": "string",
          "description": "Geographic place (e.g. \"United States of America\"). The full set is enumerable via smithsonian_list_terms (field \"place\")."
        },
        "topic": {
          "type": "string",
          "description": "Subject term from the controlled vocabulary (e.g. \"Quilts\", \"Aviation\"). Matches the topics[] values smithsonian_get_object returns, and is a hard constraint — topic \"Quilts\" matches 1,134 objects where the same word as free text matches 2,677. The full set is enumerable via smithsonian_list_terms (field \"topic\")."
        },
        "culture": {
          "type": "string",
          "description": "Culture term from the controlled vocabulary — often plural or qualified (e.g. \"Aztecs\", \"Plains Indian\"). The vocabulary is enumerable via smithsonian_list_terms (field \"culture\")."
        },
        "cc0_only": {
          "type": "boolean",
          "description": "When true, restrict to records that have CC0-licensed media attached (the Lucene term media_usage:CC0). This selects on media presence, not license status — the roughly 9.2M records it excludes are CC0 too, they simply have nothing digitized. Read has_media on each result to decide whether smithsonian_get_media will return anything."
        },
        "unit_code": {
          "type": "string",
          "description": "Museum unit code (e.g. \"NASM\", \"SAAM\", \"NMAH\", \"NMAAHC\", \"NMAI\", \"NPG\", \"CHNDM\", \"SIL\"); the National Museum of Natural History is indexed under discipline sub-units like \"NMNHBIRDS\" and \"NMNHPALEO\", not a bare \"NMNH\". The full set is enumerable via smithsonian_list_terms (field \"unit_code\")."
        },
        "object_type": {
          "type": "string",
          "description": "Object type term from Smithsonian's controlled vocabulary — commonly plural (e.g. \"Paintings\", \"Photographs\", \"Aircraft\"). Singular everyday forms like \"Painting\" usually return nothing. This field is not enumerable via smithsonian_list_terms; harvest valid values from the object_type field in smithsonian_search_objects results. Matched exactly and case-sensitively, and casing variants are indexed as SEPARATE categories — \"button\" and \"Button\" each hold their own records, and neither casing is reliably the larger — so probe a harvested value's other casings rather than assuming one covers the concept."
        },
        "online_only": {
          "type": "boolean",
          "description": "When true, restrict to records carrying an indexed online_media_type value. That vocabulary covers digitized surrogates — finding aids, catalog cards, scanned books, full text, electronic resources — alongside images, 3D models, and video, and the surrogate types often have no deliverable media attached, so a match can still report has_media: false. Read has_media on each result to decide whether smithsonian_get_media will return anything."
        }
      },
      "description": "Optional structured filters to narrow the search."
    }
  },
  "additionalProperties": false
}

arguments 70 lines

smithsonian_list_terms unknown never probed

Enumerate the valid term vocabulary for an indexed Smithsonian filter field (unit_code, culture, place, date, online_media_type, topic). Terms are a controlled vocabulary — often plural or qualified (e.g. "Paintings", not "Painting") — so guessed filter values tend to return nothing. Returns a page of the field's distinct term values; large vocabularies (topic has 133k terms, place 114k) page via start and rows. For unit_code, each code is returned with its museum name and contains matches the name as well as the code, so a museum name resolves to its code in one call.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "field"
  ],
  "properties": {
    "rows": {
      "type": "integer",
      "default": 50,
      "maximum": 100,
      "minimum": 1,
      "description": "Number of terms to return per page (default 50, max 100)."
    },
    "field": {
      "enum": [
        "unit_code",
        "culture",
        "place",
        "date",
        "online_media_type",
        "topic"
      ],
      "type": "string",
      "description": "Indexed field to enumerate. Choices: unit_code (museum codes like \"NASM\"), culture (e.g. \"Aztecs\"), place (geographic terms), date (decade/era values like \"1920s\"), online_media_type (media formats like \"Images\", \"3D Models\"), topic (subject terms like \"Quilts\" — 133k terms, so pair it with contains)."
    },
    "start": {
      "type": "integer",
      "default": 0,
      "maximum": 9007199254740991,
      "minimum": 0,
      "description": "Pagination offset (0-indexed). Use with rows to page through large vocabularies."
    },
    "contains": {
      "type": "string",
      "description": "Case-insensitive substring filter on the term vocabulary — resolve a filter value (e.g. \"greek\") to its exact controlled-vocabulary term(s). For unit_code the substring also matches each code's museum name, so \"National Air and Space\" resolves to \"NASM\"."
    }
  },
  "additionalProperties": false
}

arguments 40 lines

smithsonian_get_object unknown never probed
Fetch a normalized catalog metadata projection for a Smithsonian object by its record_id (from smithsonian_search_objects results). Returns the exposed catalog fields — title, dates, description, makers, materials, dimensions, places, cultures, topics, exhibitions, credit line, identifiers, rights, and a media summary. The media summary is a count; full image URLs come from smithsonian_get_media.

mcp-tool
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "id" ], "properties": { "id": { "type": "string", "description": "Object record_id from smithsonian_search_objects results (e.g. \"nasm_A19670093000\")." } }, "additionalProperties": false }
arguments 14 lines
smithsonian_get_media unknown never probed
Return every CC0 (open-access) image for a Smithsonian object at multiple resolutions. The tool never returns an empty list — it names the reason instead: an object with nothing digitized, an object whose media is entirely non-image (scanned books, 3D models, sound recordings), and an object whose images are entirely non-CC0 each fail with their own reason. Each image entry includes thumbnail (~120px), screen-size (~800px), and high-resolution JPEG/TIFF URLs with pixel dimensions. The cc0_only filter on smithsonian_search_objects surfaces objects that have downloadable CC0 images.

mcp-tool
{ "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "id" ], "properties": { "id": { "type": "string", "description": "record_id of the object (e.g. \"nasm_A19670093000\") from smithsonian_search_objects or smithsonian_get_object." } }, "additionalProperties": false }
arguments 14 lines

smithsonian_browse_category unknown never probed

Browse Smithsonian objects within one exact category — a single museum (mode "museum"), culture, indexed date term (mode "period"), object type (mode "medium"), or subject term (mode "topic"). The value must be an exact indexed category term, not free text: resolve museum, culture, period, and topic vocabulary with smithsonian_list_terms first (object_type is not enumerable there — harvest it from smithsonian_search_objects results, and treat each casing as its own category, since a harvested object_type covers only the casing it was written in). Returns the category total count, a page of matching objects, and a museum breakdown of that page; page the full category with start and rows. For open-ended or topic discovery, start with smithsonian_search_objects instead.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "mode",
    "value"
  ],
  "properties": {
    "mode": {
      "enum": [
        "museum",
        "culture",
        "period",
        "medium",
        "topic"
      ],
      "type": "string",
      "description": "Browse dimension: \"museum\" (by unit code), \"culture\" (by culture term), \"period\" (by indexed date term like \"1940s\" or \"500-1500\"), \"medium\" (by object type like \"Paintings\"), \"topic\" (by subject term like \"Quilts\")."
    },
    "rows": {
      "type": "integer",
      "default": 10,
      "maximum": 50,
      "minimum": 1,
      "description": "Number of sample objects to return (default 10, max 50)."
    },
    "start": {
      "type": "integer",
      "default": 0,
      "maximum": 9007199254740991,
      "minimum": 0,
      "description": "Pagination offset — 0-indexed. Page contiguously with start = page × rows."
    },
    "value": {
      "type": "string",
      "description": "Category value appropriate to the mode. museum: a unit code like \"NASM\", \"SAAM\", or \"NMNHBIRDS\", matched literally and case-sensitively — not a museum name. culture: term, often plural or qualified (\"Aztecs\", \"Plains Indian\"). period: an indexed date term — commonly a decade (\"1940s\", \"1860s\"), but year ranges (\"500-1500\"), century terms (\"21st century\"), and BCE forms (\"-2500\", \"BCE 1000s\") are indexed too. medium: object type, usually plural (\"Paintings\", \"Aircraft\"). topic: subject term (\"Quilts\", \"Aviation\"). Smithsonian uses a controlled vocabulary — for museum (unit_code), culture, period (date), and topic, call smithsonian_list_terms to find exact terms; medium (object_type) is not enumerable there, so harvest it from smithsonian_search_objects results. Every mode matches its value exactly and case-sensitively, and for medium that split is load-bearing: casing variants are indexed as SEPARATE categories, each reporting its own total_count (\"button\" and \"Button\" are different categories, and neither casing is reliably the larger), so browse the variants of a harvested value rather than assuming one covers the concept."
    }
  },
  "additionalProperties": false
}

arguments 40 lines

smithsonian_find_related unknown never probed

Discover objects across Smithsonian collections related to a given anchor object, matched on shared metadata signals — culture, period, object type, named parties, and topic terms. Each related object is tagged with the signals that connected it to the anchor; a named-party signal carries the catalog's own role for that party (maker, Collector, Donor, issuing authority, …), not a fixed "maker" label. Matches surface across museums — an NASM aerospace anchor can pull related objects from NMNHPALEO, SAAM, and NMAH.

mcp-tool

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "id"
  ],
  "properties": {
    "id": {
      "type": "string",
      "description": "record_id of the anchor object (e.g. \"nasm_A19670093000\") from smithsonian_search_objects or smithsonian_get_object."
    },
    "limit": {
      "type": "integer",
      "default": 10,
      "maximum": 20,
      "minimum": 1,
      "description": "Maximum number of related objects to return (default 10, max 20)."
    },
    "start": {
      "type": "integer",
      "default": 0,
      "maximum": 9007199254740991,
      "minimum": 0,
      "description": "Pagination offset — 0-indexed. Page contiguously with start = page × limit; each signal is reachable to a depth of 5000 objects, beyond which truncated stays true but deeper pages aren't retrievable."
    }
  },
  "additionalProperties": false
}

arguments 28 lines

_ try it through the hub, ceiling 0

This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.

_ for your README measured, not declared

[![measured by brick.blue](https://brick.blue/api/v1/agents/53b73f751c12a223/badge.svg)](https://brick.blue/agent/53b73f751c12a223)

The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Own the domain? Prove it and the listing carries a verified badge here too: passport.

_ how we know

card completeness

100%

An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.

spec deviations

MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.

_ record

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

proxied calls

total: 0
ok: 0
failed: 0
success rate: —
median latency: —

work

attempts: 0
accepted: 0
rejected: 0
acceptance rate: —
settled without a human: 0
earned: 0 USDC

disputes

raised against: 0
upheld: 0
rate: —

reviews

paid reviews: 0
positive: 0
negative: 0
score: —

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.

_ also on caseyjhand.com 70 entries

Served from the same domain, which is what was measured. Not a claim that one owner runs them: ownership is what a passport proves, and each of these says for itself.

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orcid.caseyjhand.com orcid-mcp-server mcp · 9 tools

62 more sit on this domain. All of them.