search: Search across all collections

API: loc.gov:library-of-congress-api
Endpoint: /search
Response format: application/json
Auth: none
Method: GET
Last Status: 404
Latency: 306ms

Description

Search for items across all Library of Congress digital collections

Parameters (6)

all (boolean, query, optional)

Include all items (true) or only digitized items (false)

dates (string, query, optional)

Date range filter (e.g., 1900/1950)

fa (string, query, optional)

Facet filter (e.g., original-format:book)

fo (string, query, required)

Output format - must be 'json' for JSON response

Constraints: {'enum': ['json']}

q (string, query, optional)

Search query string

sp (integer, query, optional, default: 1)

Start page for pagination

Examples (3)

Basic search for constitution curl
curl 'https://www.loc.gov/api/search?q=constitution&fo=json' \
  -d '{"caption": {"description": ["Rothstein, Arthur, 1915-1985, photographer"], "image": "https://tile.loc.gov/storage-services/service/pnp/fsa/8b28000/8b28100/8b28106r.jpg", "title": "Mike Sullinger, who has a farm near Carson,\nNorth Dakota, looking for rain (1936 July)\n"}, "exception": "not found", "options": {"access_group": [""], "access_group_raw": "", "all": null, "api_version": "1", "app_context": null, "application_version": "$Revision$", "attribute": null, "attribute!": null, "attribute_map": null, "cache_tags": [], "callback": null, "clip": null, "clip_image_width": null, "clip_rotation": null, "content_filter": null, "content_replacement": "", "count": null, "dates": null, "default_count": 25, "delimiter": null, "digital_id": null, "display_level": null, "distance": null, "downloadOption": null, "duration": 0.007711648941040039, "embed": [], "embed!": [], "error_response_status": null, "excludeTerms": null, "facetLimits": "", "facetPrefix": null, "facet_count": null, "facet_style": null, "field": null, "format": "json", "host": "www.loc.gov", "ical": false, "id": null, "iiif": false, "index": null, "inputEncoding": "UTF-8", "item": null, "items": null, "keys": null, "language": null, "latlong": null, "method": "GET", "newSearch": null, "new_clip_url": false, "onsite": false, "operator": null, "outputEncoding": "UTF-8", "page_campaigns": [], "path_info": "/api/search", "port": "443", "proxypath": null, "query_string": "fo=json&q=constitution", "redirect_proxy": false, "redirect_to_item": null, "referer": "", "region": "", "release_id": 123456789, "request_host": "www.loc.gov", "request_params": {"fo": ["json"], "q": "constitution"}, "request_url": "https://www.loc.gov/api/search?fo=json&q=constitution", "resource": "", "resource_sequence": null, "scheme": "https", "searchIn": null, "searchTerms": "constitution", "segments": null, "site_id": null, "site_type": null, "solrQuery": "", "sortBy": null, "sortOrder": null, "startPage": null, "style": null, "suggested": null, "target": null, "timestamp": 1773536812.6540015, "tz_aware": null, "unionFacets": "", "webcast_permalink": null}, "status": 404, "timestamp": 1773536812662, "type": "not found"}'
import requests

resp = requests.get(
    "https://www.loc.gov/api/search",
    params={
        'q': 'constitution',
        'fo': 'json',
    },
    json={
        'caption': {'description': ['Rothstein, Arthur, 1915-1985, photographer'], 'image': 'https://tile.loc.gov/storage-services/service/pnp/fsa/8b28000/8b28100/8b28106r.jpg', 'title': 'Mike Sullinger, who has a farm near Carson,\nNorth Dakota, looking for rain (1936 July)\n'},
        'exception': 'not found',
        'options': {'access_group': [''], 'access_group_raw': '', 'all': None, 'api_version': '1', 'app_context': None, 'application_version': '$Revision$', 'attribute': None, 'attribute!': None, 'attribute_map': None, 'cache_tags': [], 'callback': None, 'clip': None, 'clip_image_width': None, 'clip_rotation': None, 'content_filter': None, 'content_replacement': '', 'count': None, 'dates': None, 'default_count': 25, 'delimiter': None, 'digital_id': None, 'display_level': None, 'distance': None, 'downloadOption': None, 'duration': 0.007711648941040039, 'embed': [], 'embed!': [], 'error_response_status': None, 'excludeTerms': None, 'facetLimits': '', 'facetPrefix': None, 'facet_count': None, 'facet_style': None, 'field': None, 'format': 'json', 'host': 'www.loc.gov', 'ical': False, 'id': None, 'iiif': False, 'index': None, 'inputEncoding': 'UTF-8', 'item': None, 'items': None, 'keys': None, 'language': None, 'latlong': None, 'method': 'GET', 'newSearch': None, 'new_clip_url': False, 'onsite': False, 'operator': None, 'outputEncoding': 'UTF-8', 'page_campaigns': [], 'path_info': '/api/search', 'port': '443', 'proxypath': None, 'query_string': 'fo=json&q=constitution', 'redirect_proxy': False, 'redirect_to_item': None, 'referer': '', 'region': '', 'release_id': 123456789, 'request_host': 'www.loc.gov', 'request_params': {'fo': ['json'], 'q': 'constitution'}, 'request_url': 'https://www.loc.gov/api/search?fo=json&q=constitution', 'resource': '', 'resource_sequence': None, 'scheme': 'https', 'searchIn': None, 'searchTerms': 'constitution', 'segments': None, 'site_id': None, 'site_type': None, 'solrQuery': '', 'sortBy': None, 'sortOrder': None, 'startPage': None, 'style': None, 'suggested': None, 'target': None, 'timestamp': 1773536812.6540015, 'tz_aware': None, 'unionFacets': '', 'webcast_permalink': None},
        'status': 404,
        'timestamp': 1773536812662,
        'type': 'not found',
    },
)
data = resp.json()
import zingu_apis

api = zingu_apis.api("library-of-congress")
result = api.fetch("search", q="constitution", fo="json")

for item in result:
    print(item)
const body = {
  "caption": {
    "description": [
      "Rothstein, Arthur, 1915-1985, photographer"
    ],
    "image": "https://tile.loc.gov/storage-services/service/pnp/fsa/8b28000/8b28100/8b28106r.jpg",
    "title": "Mike Sullinger, who has a farm near Carson,\nNorth Dakota, looking for rain (1936 July)\n"
  },
  "exception": "not found",
  "options": {
    "access_group": [
      ""
    ],
    "access_group_raw": "",
    "all": null,
    "api_version": "1",
    "app_context": null,
    "application_version": "$Revision$",
    "attribute": null,
    "attribute!": null,
    "attribute_map": null,
    "cache_tags": [],
    "callback": null,
    "clip": null,
    "clip_image_width": null,
    "clip_rotation": null,
    "content_filter": null,
    "content_replacement": "",
    "count": null,
    "dates": null,
    "default_count": 25,
    "delimiter": null,
    "digital_id": null,
    "display_level": null,
    "distance": null,
    "downloadOption": null,
    "duration": 0.007711648941040039,
    "embed": [],
    "embed!": [],
    "error_response_status": null,
    "excludeTerms": null,
    "facetLimits": "",
    "facetPrefix": null,
    "facet_count": null,
    "facet_style": null,
    "field": null,
    "format": "json",
    "host": "www.loc.gov",
    "ical": false,
    "id": null,
    "iiif": false,
    "index": null,
    "inputEncoding": "UTF-8",
    "item": null,
    "items": null,
    "keys": null,
    "language": null,
    "latlong": null,
    "method": "GET",
    "newSearch": null,
    "new_clip_url": false,
    "onsite": false,
    "operator": null,
    "outputEncoding": "UTF-8",
    "page_campaigns": [],
    "path_info": "/api/search",
    "port": "443",
    "proxypath": null,
    "query_string": "fo=json&q=constitution",
    "redirect_proxy": false,
    "redirect_to_item": null,
    "referer": "",
    "region": "",
    "release_id": 123456789,
    "request_host": "www.loc.gov",
    "request_params": {
      "fo": [
        "json"
      ],
      "q": "constitution"
    },
    "request_url": "https://www.loc.gov/api/search?fo=json&q=constitution",
    "resource": "",
    "resource_sequence": null,
    "scheme": "https",
    "searchIn": null,
    "searchTerms": "constitution",
    "segments": null,
    "site_id": null,
    "site_type": null,
    "solrQuery": "",
    "sortBy": null,
    "sortOrder": null,
    "startPage": null,
    "style": null,
    "suggested": null,
    "target": null,
    "timestamp": 1773536812.6540015,
    "tz_aware": null,
    "unionFacets": "",
    "webcast_permalink": null
  },
  "status": 404,
  "timestamp": 1773536812662,
  "type": "not found"
};

const resp = await fetch("https://www.loc.gov/api/search?q=constitution&fo=json", {
  body: JSON.stringify(body),
});
const data = await resp.json();
Search books from 1900-1950 curl
curl 'https://www.loc.gov/api/search?q=civil+war&dates=1900%2F1950&fa=original-format%3Abook&fo=json' \
  -d '{"caption": {"description": ["Rothstein, Arthur, 1915-1985, photographer"], "image": "https://tile.loc.gov/storage-services/service/pnp/fsa/8b28000/8b28100/8b28106r.jpg", "title": "Mike Sullinger, who has a farm near Carson,\nNorth Dakota, looking for rain (1936 July)\n"}, "exception": "not found", "options": {"access_group": [""], "access_group_raw": "", "all": null, "api_version": "1", "app_context": null, "application_version": "$Revision$", "attribute": null, "attribute!": null, "attribute_map": null, "cache_tags": [], "callback": null, "clip": null, "clip_image_width": null, "clip_rotation": null, "content_filter": null, "content_replacement": "", "count": null, "dates": "1900/1950", "default_count": 25, "delimiter": null, "digital_id": null, "display_level": null, "distance": null, "downloadOption": null, "duration": 0.006307363510131836, "embed": [], "embed!": [], "error_response_status": null, "excludeTerms": null, "facetLimits": "original-format:book", "facetPrefix": null, "facet_count": null, "facet_style": null, "field": null, "format": "json", "host": "www.loc.gov", "ical": false, "id": null, "iiif": false, "index": null, "inputEncoding": "UTF-8", "item": null, "items": null, "keys": null, "language": null, "latlong": null, "method": "GET", "newSearch": null, "new_clip_url": false, "onsite": false, "operator": null, "outputEncoding": "UTF-8", "page_campaigns": [], "path_info": "/api/search", "port": "443", "proxypath": null, "query_string": "dates=1900/1950&fa=original-format:book&fo=json&q=civil%20war", "redirect_proxy": false, "redirect_to_item": null, "referer": "", "region": "", "release_id": 123456789, "request_host": "www.loc.gov", "request_params": {"dates": ["1900/1950"], "fa": ["original-format:book"], "fo": ["json"], "q": "civil war"}, "request_url": "https://www.loc.gov/api/search?dates=1900/1950&fa=original-format:book&fo=json&q=civil%20war", "resource": "", "resource_sequence": null, "scheme": "https", "searchIn": null, "searchTerms": "civil war", "segments": null, "site_id": null, "site_type": null, "solrQuery": "", "sortBy": null, "sortOrder": null, "startPage": null, "style": null, "suggested": null, "target": null, "timestamp": 1773536812.8911602, "tz_aware": null, "unionFacets": "", "webcast_permalink": null}, "status": 404, "timestamp": 1773536812897, "type": "not found"}'
import requests

resp = requests.get(
    "https://www.loc.gov/api/search",
    params={
        'q': 'civil war',
        'dates': '1900/1950',
        'fa': 'original-format:book',
        'fo': 'json',
    },
    json={
        'caption': {'description': ['Rothstein, Arthur, 1915-1985, photographer'], 'image': 'https://tile.loc.gov/storage-services/service/pnp/fsa/8b28000/8b28100/8b28106r.jpg', 'title': 'Mike Sullinger, who has a farm near Carson,\nNorth Dakota, looking for rain (1936 July)\n'},
        'exception': 'not found',
        'options': {'access_group': [''], 'access_group_raw': '', 'all': None, 'api_version': '1', 'app_context': None, 'application_version': '$Revision$', 'attribute': None, 'attribute!': None, 'attribute_map': None, 'cache_tags': [], 'callback': None, 'clip': None, 'clip_image_width': None, 'clip_rotation': None, 'content_filter': None, 'content_replacement': '', 'count': None, 'dates': '1900/1950', 'default_count': 25, 'delimiter': None, 'digital_id': None, 'display_level': None, 'distance': None, 'downloadOption': None, 'duration': 0.006307363510131836, 'embed': [], 'embed!': [], 'error_response_status': None, 'excludeTerms': None, 'facetLimits': 'original-format:book', 'facetPrefix': None, 'facet_count': None, 'facet_style': None, 'field': None, 'format': 'json', 'host': 'www.loc.gov', 'ical': False, 'id': None, 'iiif': False, 'index': None, 'inputEncoding': 'UTF-8', 'item': None, 'items': None, 'keys': None, 'language': None, 'latlong': None, 'method': 'GET', 'newSearch': None, 'new_clip_url': False, 'onsite': False, 'operator': None, 'outputEncoding': 'UTF-8', 'page_campaigns': [], 'path_info': '/api/search', 'port': '443', 'proxypath': None, 'query_string': 'dates=1900/1950&fa=original-format:book&fo=json&q=civil%20war', 'redirect_proxy': False, 'redirect_to_item': None, 'referer': '', 'region': '', 'release_id': 123456789, 'request_host': 'www.loc.gov', 'request_params': {'dates': ['1900/1950'], 'fa': ['original-format:book'], 'fo': ['json'], 'q': 'civil war'}, 'request_url': 'https://www.loc.gov/api/search?dates=1900/1950&fa=original-format:book&fo=json&q=civil%20war', 'resource': '', 'resource_sequence': None, 'scheme': 'https', 'searchIn': None, 'searchTerms': 'civil war', 'segments': None, 'site_id': None, 'site_type': None, 'solrQuery': '', 'sortBy': None, 'sortOrder': None, 'startPage': None, 'style': None, 'suggested': None, 'target': None, 'timestamp': 1773536812.8911602, 'tz_aware': None, 'unionFacets': '', 'webcast_permalink': None},
        'status': 404,
        'timestamp': 1773536812897,
        'type': 'not found',
    },
)
data = resp.json()
import zingu_apis

api = zingu_apis.api("library-of-congress")
result = api.fetch("search", q="civil war", dates="1900/1950", fa="original-format:book", fo="json")

for item in result:
    print(item)
const body = {
  "caption": {
    "description": [
      "Rothstein, Arthur, 1915-1985, photographer"
    ],
    "image": "https://tile.loc.gov/storage-services/service/pnp/fsa/8b28000/8b28100/8b28106r.jpg",
    "title": "Mike Sullinger, who has a farm near Carson,\nNorth Dakota, looking for rain (1936 July)\n"
  },
  "exception": "not found",
  "options": {
    "access_group": [
      ""
    ],
    "access_group_raw": "",
    "all": null,
    "api_version": "1",
    "app_context": null,
    "application_version": "$Revision$",
    "attribute": null,
    "attribute!": null,
    "attribute_map": null,
    "cache_tags": [],
    "callback": null,
    "clip": null,
    "clip_image_width": null,
    "clip_rotation": null,
    "content_filter": null,
    "content_replacement": "",
    "count": null,
    "dates": "1900/1950",
    "default_count": 25,
    "delimiter": null,
    "digital_id": null,
    "display_level": null,
    "distance": null,
    "downloadOption": null,
    "duration": 0.006307363510131836,
    "embed": [],
    "embed!": [],
    "error_response_status": null,
    "excludeTerms": null,
    "facetLimits": "original-format:book",
    "facetPrefix": null,
    "facet_count": null,
    "facet_style": null,
    "field": null,
    "format": "json",
    "host": "www.loc.gov",
    "ical": false,
    "id": null,
    "iiif": false,
    "index": null,
    "inputEncoding": "UTF-8",
    "item": null,
    "items": null,
    "keys": null,
    "language": null,
    "latlong": null,
    "method": "GET",
    "newSearch": null,
    "new_clip_url": false,
    "onsite": false,
    "operator": null,
    "outputEncoding": "UTF-8",
    "page_campaigns": [],
    "path_info": "/api/search",
    "port": "443",
    "proxypath": null,
    "query_string": "dates=1900/1950&fa=original-format:book&fo=json&q=civil%20war",
    "redirect_proxy": false,
    "redirect_to_item": null,
    "referer": "",
    "region": "",
    "release_id": 123456789,
    "request_host": "www.loc.gov",
    "request_params": {
      "dates": [
        "1900/1950"
      ],
      "fa": [
        "original-format:book"
      ],
      "fo": [
        "json"
      ],
      "q": "civil war"
    },
    "request_url": "https://www.loc.gov/api/search?dates=1900/1950&fa=original-format:book&fo=json&q=civil%20war",
    "resource": "",
    "resource_sequence": null,
    "scheme": "https",
    "searchIn": null,
    "searchTerms": "civil war",
    "segments": null,
    "site_id": null,
    "site_type": null,
    "solrQuery": "",
    "sortBy": null,
    "sortOrder": null,
    "startPage": null,
    "style": null,
    "suggested": null,
    "target": null,
    "timestamp": 1773536812.8911602,
    "tz_aware": null,
    "unionFacets": "",
    "webcast_permalink": null
  },
  "status": 404,
  "timestamp": 1773536812897,
  "type": "not found"
};

const resp = await fetch("https://www.loc.gov/api/search?q=civil+war&dates=1900%2F1950&fa=original-format%3Abook&fo=json", {
  body: JSON.stringify(body),
});
const data = await resp.json();
Paginated search for maps curl
curl 'https://www.loc.gov/api/search?q=map&fa=original-format%3Amap&sp=2&fo=json' \
  -d '{"caption": {"description": ["Harris & Ewing, photographer"], "image": "https://tile.loc.gov/storage-services/service/pnp/hec/11600/11646r.jpg", "title": "MAYFLOWER, U.S.S. SAILOR\nLOOKING THROUGH TELESCOPE ON MAYFLOWER (1918)\n"}, "exception": "not found", "options": {"access_group": [""], "access_group_raw": "", "all": null, "api_version": "1", "app_context": null, "application_version": "$Revision$", "attribute": null, "attribute!": null, "attribute_map": null, "cache_tags": [], "callback": null, "clip": null, "clip_image_width": null, "clip_rotation": null, "content_filter": null, "content_replacement": "", "count": null, "dates": null, "default_count": 25, "delimiter": null, "digital_id": null, "display_level": null, "distance": null, "downloadOption": null, "duration": 0.006763935089111328, "embed": [], "embed!": [], "error_response_status": null, "excludeTerms": null, "facetLimits": "original-format:map", "facetPrefix": null, "facet_count": null, "facet_style": null, "field": null, "format": "json", "host": "www.loc.gov", "ical": false, "id": null, "iiif": false, "index": null, "inputEncoding": "UTF-8", "item": null, "items": null, "keys": null, "language": null, "latlong": null, "method": "GET", "newSearch": null, "new_clip_url": false, "onsite": false, "operator": null, "outputEncoding": "UTF-8", "page_campaigns": [], "path_info": "/api/search", "port": "443", "proxypath": null, "query_string": "fa=original-format:map&fo=json&q=map&sp=2", "redirect_proxy": false, "redirect_to_item": null, "referer": "", "region": "", "release_id": 123456789, "request_host": "www.loc.gov", "request_params": {"fa": ["original-format:map"], "fo": ["json"], "q": "map", "sp": ["2"]}, "request_url": "https://www.loc.gov/api/search?fa=original-format:map&fo=json&q=map&sp=2", "resource": "", "resource_sequence": null, "scheme": "https", "searchIn": null, "searchTerms": "map", "segments": null, "site_id": null, "site_type": null, "solrQuery": "", "sortBy": null, "sortOrder": null, "startPage": 2, "style": null, "suggested": null, "target": null, "timestamp": 1773536813.14333, "tz_aware": null, "unionFacets": "", "webcast_permalink": null}, "status": 404, "timestamp": 1773536813150, "type": "not found"}'
import requests

resp = requests.get(
    "https://www.loc.gov/api/search",
    params={
        'q': 'map',
        'fa': 'original-format:map',
        'sp': '2',
        'fo': 'json',
    },
    json={
        'caption': {'description': ['Harris & Ewing, photographer'], 'image': 'https://tile.loc.gov/storage-services/service/pnp/hec/11600/11646r.jpg', 'title': 'MAYFLOWER, U.S.S. SAILOR\nLOOKING THROUGH TELESCOPE ON MAYFLOWER (1918)\n'},
        'exception': 'not found',
        'options': {'access_group': [''], 'access_group_raw': '', 'all': None, 'api_version': '1', 'app_context': None, 'application_version': '$Revision$', 'attribute': None, 'attribute!': None, 'attribute_map': None, 'cache_tags': [], 'callback': None, 'clip': None, 'clip_image_width': None, 'clip_rotation': None, 'content_filter': None, 'content_replacement': '', 'count': None, 'dates': None, 'default_count': 25, 'delimiter': None, 'digital_id': None, 'display_level': None, 'distance': None, 'downloadOption': None, 'duration': 0.006763935089111328, 'embed': [], 'embed!': [], 'error_response_status': None, 'excludeTerms': None, 'facetLimits': 'original-format:map', 'facetPrefix': None, 'facet_count': None, 'facet_style': None, 'field': None, 'format': 'json', 'host': 'www.loc.gov', 'ical': False, 'id': None, 'iiif': False, 'index': None, 'inputEncoding': 'UTF-8', 'item': None, 'items': None, 'keys': None, 'language': None, 'latlong': None, 'method': 'GET', 'newSearch': None, 'new_clip_url': False, 'onsite': False, 'operator': None, 'outputEncoding': 'UTF-8', 'page_campaigns': [], 'path_info': '/api/search', 'port': '443', 'proxypath': None, 'query_string': 'fa=original-format:map&fo=json&q=map&sp=2', 'redirect_proxy': False, 'redirect_to_item': None, 'referer': '', 'region': '', 'release_id': 123456789, 'request_host': 'www.loc.gov', 'request_params': {'fa': ['original-format:map'], 'fo': ['json'], 'q': 'map', 'sp': ['2']}, 'request_url': 'https://www.loc.gov/api/search?fa=original-format:map&fo=json&q=map&sp=2', 'resource': '', 'resource_sequence': None, 'scheme': 'https', 'searchIn': None, 'searchTerms': 'map', 'segments': None, 'site_id': None, 'site_type': None, 'solrQuery': '', 'sortBy': None, 'sortOrder': None, 'startPage': 2, 'style': None, 'suggested': None, 'target': None, 'timestamp': 1773536813.14333, 'tz_aware': None, 'unionFacets': '', 'webcast_permalink': None},
        'status': 404,
        'timestamp': 1773536813150,
        'type': 'not found',
    },
)
data = resp.json()
import zingu_apis

api = zingu_apis.api("library-of-congress")
result = api.fetch("search", q="map", fa="original-format:map", sp=2, fo="json")

for item in result:
    print(item)
const body = {
  "caption": {
    "description": [
      "Harris & Ewing, photographer"
    ],
    "image": "https://tile.loc.gov/storage-services/service/pnp/hec/11600/11646r.jpg",
    "title": "MAYFLOWER, U.S.S. SAILOR\nLOOKING THROUGH TELESCOPE ON MAYFLOWER (1918)\n"
  },
  "exception": "not found",
  "options": {
    "access_group": [
      ""
    ],
    "access_group_raw": "",
    "all": null,
    "api_version": "1",
    "app_context": null,
    "application_version": "$Revision$",
    "attribute": null,
    "attribute!": null,
    "attribute_map": null,
    "cache_tags": [],
    "callback": null,
    "clip": null,
    "clip_image_width": null,
    "clip_rotation": null,
    "content_filter": null,
    "content_replacement": "",
    "count": null,
    "dates": null,
    "default_count": 25,
    "delimiter": null,
    "digital_id": null,
    "display_level": null,
    "distance": null,
    "downloadOption": null,
    "duration": 0.006763935089111328,
    "embed": [],
    "embed!": [],
    "error_response_status": null,
    "excludeTerms": null,
    "facetLimits": "original-format:map",
    "facetPrefix": null,
    "facet_count": null,
    "facet_style": null,
    "field": null,
    "format": "json",
    "host": "www.loc.gov",
    "ical": false,
    "id": null,
    "iiif": false,
    "index": null,
    "inputEncoding": "UTF-8",
    "item": null,
    "items": null,
    "keys": null,
    "language": null,
    "latlong": null,
    "method": "GET",
    "newSearch": null,
    "new_clip_url": false,
    "onsite": false,
    "operator": null,
    "outputEncoding": "UTF-8",
    "page_campaigns": [],
    "path_info": "/api/search",
    "port": "443",
    "proxypath": null,
    "query_string": "fa=original-format:map&fo=json&q=map&sp=2",
    "redirect_proxy": false,
    "redirect_to_item": null,
    "referer": "",
    "region": "",
    "release_id": 123456789,
    "request_host": "www.loc.gov",
    "request_params": {
      "fa": [
        "original-format:map"
      ],
      "fo": [
        "json"
      ],
      "q": "map",
      "sp": [
        "2"
      ]
    },
    "request_url": "https://www.loc.gov/api/search?fa=original-format:map&fo=json&q=map&sp=2",
    "resource": "",
    "resource_sequence": null,
    "scheme": "https",
    "searchIn": null,
    "searchTerms": "map",
    "segments": null,
    "site_id": null,
    "site_type": null,
    "solrQuery": "",
    "sortBy": null,
    "sortOrder": null,
    "startPage": 2,
    "style": null,
    "suggested": null,
    "target": null,
    "timestamp": 1773536813.14333,
    "tz_aware": null,
    "unionFacets": "",
    "webcast_permalink": null
  },
  "status": 404,
  "timestamp": 1773536813150,
  "type": "not found"
};

const resp = await fetch("https://www.loc.gov/api/search?q=map&fa=original-format%3Amap&sp=2&fo=json", {
  body: JSON.stringify(body),
});
const data = await resp.json();

Probe History

Latency

Status Codes

TimeStatusLatencySize
2026-04-16 03:44:52.254642 404 306ms
2026-04-16 02:50:17.031135 404 335ms
2026-04-16 00:41:15.257407 404 282ms
2026-04-15 00:57:52.941237 404 323ms
2026-04-15 00:56:44.321434 404 291ms
2026-04-15 00:16:31.756821 404 309ms
2026-04-14 03:29:08.096552 404 264ms
2026-04-14 01:19:29.416180 404 308ms
2026-04-14 00:23:41.304541 404 458ms
2026-04-12 16:42:33.726731 404 313ms
2026-04-12 15:47:44.323104 404 310ms
2026-04-12 14:48:31.101821 404 301ms
2026-04-10 02:39:39.832390 404 256ms
2026-04-10 02:00:25.001237 404 507ms
2026-04-10 00:45:06.872131 404 248ms
2026-04-09 02:22:55.278102 404 264ms
2026-04-09 02:00:44.653867 404 442ms
2026-04-09 00:52:41.495878 404 314ms
2026-04-08 07:18:56.595907 404 547ms
2026-04-08 06:56:29.727886 404 327ms
2026-04-08 01:41:33.283783 404 313ms
2026-04-07 01:51:02.929621 404 259ms
2026-04-07 01:24:19.656261 404 328ms
2026-04-07 00:29:43.218292 404 277ms
2026-04-06 05:21:44.944800 404 436ms
2026-04-06 04:22:00.394504 404 346ms
2026-04-05 19:13:22.184826 404 380ms
2026-04-05 03:05:30.599075 404 311ms
2026-04-05 02:13:37.030747 404 365ms
2026-04-05 00:08:52.536670 404 386ms
2026-04-04 02:49:25.461856 404 263ms
2026-04-04 02:46:14.104246 404 354ms
2026-04-04 02:39:10.627934 404 255ms
2026-04-03 13:06:56.968972 404 419ms
2026-04-03 12:43:35.113919 404 267ms
2026-04-03 12:17:10.402159 404 264ms
2026-03-30 03:01:02.631789 404 478ms
2026-03-30 02:50:35.326661 404 267ms
2026-03-30 02:12:40.803148 404 326ms
2026-03-29 13:35:35.346616 404 307ms
2026-03-29 13:04:12.271945 404 255ms
2026-03-29 12:42:48.609419 404 17376ms
2026-03-23 10:23:04.765283 404 253ms
2026-03-23 10:09:54.464422 404 231ms
2026-03-23 09:42:13.171186 404 237ms