Find the sections that cite this one
curl --request GET \
--url https://api.vaquill.ai/api/v1/us/statutes/section/{act_id}/cited-by \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.vaquill.ai/api/v1/us/statutes/section/{act_id}/cited-by"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.vaquill.ai/api/v1/us/statutes/section/{act_id}/cited-by', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.vaquill.ai/api/v1/us/statutes/section/{act_id}/cited-by"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}{
"section": {
"actId": "<string>",
"citation": "<string>",
"citationShort": "<string>",
"title": "<string>",
"corpusType": "<string>",
"state": "<string>",
"source": "sct",
"year": 123,
"relevanceScore": 0,
"excerpt": "",
"titleNumber": "<string>",
"titleName": "<string>",
"chapter": "<string>",
"chapterName": "<string>",
"sectionNumber": "<string>",
"sectionTitle": "<string>",
"displayPath": "<string>",
"breadcrumb": [
{}
],
"parent": {},
"subchapter": "<string>",
"subchapterName": "<string>",
"part": "<string>",
"partName": "<string>",
"subpart": "<string>",
"subpartName": "<string>",
"popularName": "<string>",
"actStatus": "<string>",
"goodLawStatus": "<string>",
"currencyNote": "<string>",
"renumberedTo": "<string>",
"transferredTo": "<string>",
"issueDate": "<string>",
"crossReferencesCfr": [
"<string>"
],
"crossReferencesUsc": [
"<string>"
],
"statutoryAuthority": [
{}
],
"implementingRegulations": [
{}
],
"frRegulationIdNumbers": [
"<string>"
],
"frDocketIds": [
"<string>"
],
"frEffectiveOn": "<string>",
"frCommentsCloseOn": "<string>",
"frSignificant": true,
"frCorrectionOf": "<string>",
"frCorrections": [
"<string>"
],
"frRegulationsDotGovUrl": "<string>",
"frRelatedDocuments": [
{
"actId": "<string>",
"citation": "<string>",
"title": "<string>",
"documentType": "<string>",
"publicationDate": "<string>"
}
],
"subject": "<string>",
"rescindedOn": "<string>",
"sourceCredit": "<string>",
"amendmentYears": [
123
],
"lastAmendedYear": 123,
"amendmentsCount": 123,
"currentThrough": "<string>",
"amendmentHistory": [
"<string>"
],
"sourceNote": "<string>",
"effectiveDate": "<string>",
"priorEffectiveDates": [
"<string>"
],
"history": "<string>",
"supersededBy": "<string>",
"supersedes": "<string>",
"ruleSet": "<string>",
"publicLaws": [
"<string>"
],
"federalRegisterCitations": [
"<string>"
],
"granuleId": "<string>",
"packageId": "<string>",
"htmlUrl": "<string>",
"pdfUrl": "<string>",
"xmlUrl": "<string>",
"textUrl": "<string>",
"docxUrl": "<string>",
"stateHtmlUrl": "<string>",
"govInfoHtmlUrl": "<string>",
"govInfoPdfUrl": "<string>",
"abstract": "This regulation extends time-limited tolerances for pesticides.",
"agencies": [
"Environmental Protection Agency"
],
"agencySlugs": [
"environmental-protection-agency"
],
"topics": [
"Environmental protection",
"Pesticides and pests"
],
"documentTypeLabel": "Rule",
"documentSubtype": "Proclamation",
"action": "Final rule.",
"president": "George W. Bush",
"signingDate": "2026-04-02",
"datesText": "This regulation is effective December 14, 2001.",
"frVolume": 66,
"frStartPage": 64768,
"frEndPage": 64775,
"wordCount": 6271,
"issuingAgency": "Pollution Control Board",
"adoptingCitations": [
"37 Ill. Reg. 16539"
],
"lawImplemented": "Section 4656.1, Public Resources Code",
"lastAmendedDate": "October 4, 2013",
"amendmentNote": "Amended at 37 Ill. Reg. 16539, effective October 4, 2013",
"currencyYear": 2025,
"reviewDate": "11/1/2028",
"originalEnactmentDate": "June 27, 1934",
"releaseDate": "2018-06-14",
"documentNumber": "21-CA-211066",
"caseName": "Dunn-Edwards Corp.",
"settlementAmount": "$16,500",
"requesters": [
"Preece, Inc."
],
"program": "Old-Age and Survivors Insurance",
"languageCode": "es",
"volume": 1,
"articleNumber": "1",
"articleName": "Declaration of Rights",
"ruleSetCode": "NDSUPCTADMINR",
"edition": "2025",
"relatedCitations": [
"RCW 28A.150.290"
],
"supersessionActions": {
"modifies": [
"Rev. Proc. 2011-47"
]
},
"licenseNote": "MIT (reglab/statecodes)",
"subtitle": "11",
"subtitleName": "AIR QUALITY",
"publisherKey": "430000000310400000000000000000000",
"versionId": "11948",
"referencedShortTitles": [
"Driftnet Modernization and Bycatch Reduction Act"
],
"subjectNumber": "47",
"audience": "All Persons Engaged in Marketing",
"sourceCharStart": 263194,
"sourceCharEnd": 264198,
"alternateCitations": [
"4 L.P.R.A. § 2077"
],
"expirationDate": "03-01-2029",
"committeeNote": "<string>",
"sourcePageStart": 114,
"sourcePageEnd": 114,
"displayLabel": "MPEP § 2165.03",
"publicationDate": "2001-12-14",
"publicLawCites": [
{}
],
"topLevelTitle": "Title 9: Criminal",
"externalUrl": "<string>"
},
"citers": [
{
"actId": "<string>",
"citation": "<string>",
"citationShort": "<string>",
"title": "<string>",
"corpusType": "<string>",
"state": "<string>",
"source": "sct",
"year": 123,
"relevanceScore": 0,
"excerpt": "",
"titleNumber": "<string>",
"titleName": "<string>",
"chapter": "<string>",
"chapterName": "<string>",
"sectionNumber": "<string>",
"sectionTitle": "<string>",
"displayPath": "<string>",
"breadcrumb": [
{}
],
"parent": {},
"subchapter": "<string>",
"subchapterName": "<string>",
"part": "<string>",
"partName": "<string>",
"subpart": "<string>",
"subpartName": "<string>",
"popularName": "<string>",
"actStatus": "<string>",
"goodLawStatus": "<string>",
"currencyNote": "<string>",
"renumberedTo": "<string>",
"transferredTo": "<string>",
"issueDate": "<string>",
"crossReferencesCfr": [
"<string>"
],
"crossReferencesUsc": [
"<string>"
],
"statutoryAuthority": [
{}
],
"implementingRegulations": [
{}
],
"frRegulationIdNumbers": [
"<string>"
],
"frDocketIds": [
"<string>"
],
"frEffectiveOn": "<string>",
"frCommentsCloseOn": "<string>",
"frSignificant": true,
"frCorrectionOf": "<string>",
"frCorrections": [
"<string>"
],
"frRegulationsDotGovUrl": "<string>",
"frRelatedDocuments": [
{
"actId": "<string>",
"citation": "<string>",
"title": "<string>",
"documentType": "<string>",
"publicationDate": "<string>"
}
],
"subject": "<string>",
"rescindedOn": "<string>",
"sourceCredit": "<string>",
"amendmentYears": [
123
],
"lastAmendedYear": 123,
"amendmentsCount": 123,
"currentThrough": "<string>",
"amendmentHistory": [
"<string>"
],
"sourceNote": "<string>",
"effectiveDate": "<string>",
"priorEffectiveDates": [
"<string>"
],
"history": "<string>",
"supersededBy": "<string>",
"supersedes": "<string>",
"ruleSet": "<string>",
"publicLaws": [
"<string>"
],
"federalRegisterCitations": [
"<string>"
],
"granuleId": "<string>",
"packageId": "<string>",
"htmlUrl": "<string>",
"pdfUrl": "<string>",
"xmlUrl": "<string>",
"textUrl": "<string>",
"docxUrl": "<string>",
"stateHtmlUrl": "<string>",
"govInfoHtmlUrl": "<string>",
"govInfoPdfUrl": "<string>",
"abstract": "This regulation extends time-limited tolerances for pesticides.",
"agencies": [
"Environmental Protection Agency"
],
"agencySlugs": [
"environmental-protection-agency"
],
"topics": [
"Environmental protection",
"Pesticides and pests"
],
"documentTypeLabel": "Rule",
"documentSubtype": "Proclamation",
"action": "Final rule.",
"president": "George W. Bush",
"signingDate": "2026-04-02",
"datesText": "This regulation is effective December 14, 2001.",
"frVolume": 66,
"frStartPage": 64768,
"frEndPage": 64775,
"wordCount": 6271,
"issuingAgency": "Pollution Control Board",
"adoptingCitations": [
"37 Ill. Reg. 16539"
],
"lawImplemented": "Section 4656.1, Public Resources Code",
"lastAmendedDate": "October 4, 2013",
"amendmentNote": "Amended at 37 Ill. Reg. 16539, effective October 4, 2013",
"currencyYear": 2025,
"reviewDate": "11/1/2028",
"originalEnactmentDate": "June 27, 1934",
"releaseDate": "2018-06-14",
"documentNumber": "21-CA-211066",
"caseName": "Dunn-Edwards Corp.",
"settlementAmount": "$16,500",
"requesters": [
"Preece, Inc."
],
"program": "Old-Age and Survivors Insurance",
"languageCode": "es",
"volume": 1,
"articleNumber": "1",
"articleName": "Declaration of Rights",
"ruleSetCode": "NDSUPCTADMINR",
"edition": "2025",
"relatedCitations": [
"RCW 28A.150.290"
],
"supersessionActions": {
"modifies": [
"Rev. Proc. 2011-47"
]
},
"licenseNote": "MIT (reglab/statecodes)",
"subtitle": "11",
"subtitleName": "AIR QUALITY",
"publisherKey": "430000000310400000000000000000000",
"versionId": "11948",
"referencedShortTitles": [
"Driftnet Modernization and Bycatch Reduction Act"
],
"subjectNumber": "47",
"audience": "All Persons Engaged in Marketing",
"sourceCharStart": 263194,
"sourceCharEnd": 264198,
"alternateCitations": [
"4 L.P.R.A. § 2077"
],
"expirationDate": "03-01-2029",
"committeeNote": "<string>",
"sourcePageStart": 114,
"sourcePageEnd": 114,
"displayLabel": "MPEP § 2165.03",
"publicationDate": "2001-12-14",
"publicLawCites": [
{}
],
"topLevelTitle": "Title 9: Criminal",
"externalUrl": "<string>"
}
],
"total": 17,
"truncated": false,
"note": "<string>",
"processingTimeMs": 74.2,
"creditsConsumed": 2
}{
"detail": "Insufficient API credits."
}{
"detail": "Insufficient API credits."
}{
"detail": "Insufficient API credits."
}{
"detail": [
{
"loc": [
"<string>"
],
"msg": "<string>",
"type": "<string>"
}
]
}{
"detail": "Insufficient API credits."
}Find the sections that cite this one
The USC and CFR sections whose text cross-references a given section.
Cost: 2 credits. Not-found, failed lookups, and sections in a corpus with no cross-reference index are not charged.
A section lookup already tells you what a section cites. This is the other direction, and it is the one you cannot get by reading the section: which provisions elsewhere in the code depend on this one. That is the question behind “if this section changes, what else is affected”.
Results are one row per citing section, in statutory order, never one row per matching chunk.
Scope: USC and CFR. State codes and Federal Register rules carry no
section-level cross-reference index, so a section from either returns an empty
list with a note explaining why, and is refunded. When note is null, an
empty citers is a real answer: plenty of sections are cited by nothing.
Completeness: this reads references as the publisher wrote them, including the title-relative form a section uses for its own neighbours. A citation that the source never recorded in machine-readable form cannot appear here, so treat a result as evidence of a citation rather than proof there are no others.
GET
/
api
/
v1
/
us
/
statutes
/
section
/
{act_id}
/
cited-by
Find the sections that cite this one
curl --request GET \
--url https://api.vaquill.ai/api/v1/us/statutes/section/{act_id}/cited-by \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.vaquill.ai/api/v1/us/statutes/section/{act_id}/cited-by"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.vaquill.ai/api/v1/us/statutes/section/{act_id}/cited-by', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.vaquill.ai/api/v1/us/statutes/section/{act_id}/cited-by"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}{
"section": {
"actId": "<string>",
"citation": "<string>",
"citationShort": "<string>",
"title": "<string>",
"corpusType": "<string>",
"state": "<string>",
"source": "sct",
"year": 123,
"relevanceScore": 0,
"excerpt": "",
"titleNumber": "<string>",
"titleName": "<string>",
"chapter": "<string>",
"chapterName": "<string>",
"sectionNumber": "<string>",
"sectionTitle": "<string>",
"displayPath": "<string>",
"breadcrumb": [
{}
],
"parent": {},
"subchapter": "<string>",
"subchapterName": "<string>",
"part": "<string>",
"partName": "<string>",
"subpart": "<string>",
"subpartName": "<string>",
"popularName": "<string>",
"actStatus": "<string>",
"goodLawStatus": "<string>",
"currencyNote": "<string>",
"renumberedTo": "<string>",
"transferredTo": "<string>",
"issueDate": "<string>",
"crossReferencesCfr": [
"<string>"
],
"crossReferencesUsc": [
"<string>"
],
"statutoryAuthority": [
{}
],
"implementingRegulations": [
{}
],
"frRegulationIdNumbers": [
"<string>"
],
"frDocketIds": [
"<string>"
],
"frEffectiveOn": "<string>",
"frCommentsCloseOn": "<string>",
"frSignificant": true,
"frCorrectionOf": "<string>",
"frCorrections": [
"<string>"
],
"frRegulationsDotGovUrl": "<string>",
"frRelatedDocuments": [
{
"actId": "<string>",
"citation": "<string>",
"title": "<string>",
"documentType": "<string>",
"publicationDate": "<string>"
}
],
"subject": "<string>",
"rescindedOn": "<string>",
"sourceCredit": "<string>",
"amendmentYears": [
123
],
"lastAmendedYear": 123,
"amendmentsCount": 123,
"currentThrough": "<string>",
"amendmentHistory": [
"<string>"
],
"sourceNote": "<string>",
"effectiveDate": "<string>",
"priorEffectiveDates": [
"<string>"
],
"history": "<string>",
"supersededBy": "<string>",
"supersedes": "<string>",
"ruleSet": "<string>",
"publicLaws": [
"<string>"
],
"federalRegisterCitations": [
"<string>"
],
"granuleId": "<string>",
"packageId": "<string>",
"htmlUrl": "<string>",
"pdfUrl": "<string>",
"xmlUrl": "<string>",
"textUrl": "<string>",
"docxUrl": "<string>",
"stateHtmlUrl": "<string>",
"govInfoHtmlUrl": "<string>",
"govInfoPdfUrl": "<string>",
"abstract": "This regulation extends time-limited tolerances for pesticides.",
"agencies": [
"Environmental Protection Agency"
],
"agencySlugs": [
"environmental-protection-agency"
],
"topics": [
"Environmental protection",
"Pesticides and pests"
],
"documentTypeLabel": "Rule",
"documentSubtype": "Proclamation",
"action": "Final rule.",
"president": "George W. Bush",
"signingDate": "2026-04-02",
"datesText": "This regulation is effective December 14, 2001.",
"frVolume": 66,
"frStartPage": 64768,
"frEndPage": 64775,
"wordCount": 6271,
"issuingAgency": "Pollution Control Board",
"adoptingCitations": [
"37 Ill. Reg. 16539"
],
"lawImplemented": "Section 4656.1, Public Resources Code",
"lastAmendedDate": "October 4, 2013",
"amendmentNote": "Amended at 37 Ill. Reg. 16539, effective October 4, 2013",
"currencyYear": 2025,
"reviewDate": "11/1/2028",
"originalEnactmentDate": "June 27, 1934",
"releaseDate": "2018-06-14",
"documentNumber": "21-CA-211066",
"caseName": "Dunn-Edwards Corp.",
"settlementAmount": "$16,500",
"requesters": [
"Preece, Inc."
],
"program": "Old-Age and Survivors Insurance",
"languageCode": "es",
"volume": 1,
"articleNumber": "1",
"articleName": "Declaration of Rights",
"ruleSetCode": "NDSUPCTADMINR",
"edition": "2025",
"relatedCitations": [
"RCW 28A.150.290"
],
"supersessionActions": {
"modifies": [
"Rev. Proc. 2011-47"
]
},
"licenseNote": "MIT (reglab/statecodes)",
"subtitle": "11",
"subtitleName": "AIR QUALITY",
"publisherKey": "430000000310400000000000000000000",
"versionId": "11948",
"referencedShortTitles": [
"Driftnet Modernization and Bycatch Reduction Act"
],
"subjectNumber": "47",
"audience": "All Persons Engaged in Marketing",
"sourceCharStart": 263194,
"sourceCharEnd": 264198,
"alternateCitations": [
"4 L.P.R.A. § 2077"
],
"expirationDate": "03-01-2029",
"committeeNote": "<string>",
"sourcePageStart": 114,
"sourcePageEnd": 114,
"displayLabel": "MPEP § 2165.03",
"publicationDate": "2001-12-14",
"publicLawCites": [
{}
],
"topLevelTitle": "Title 9: Criminal",
"externalUrl": "<string>"
},
"citers": [
{
"actId": "<string>",
"citation": "<string>",
"citationShort": "<string>",
"title": "<string>",
"corpusType": "<string>",
"state": "<string>",
"source": "sct",
"year": 123,
"relevanceScore": 0,
"excerpt": "",
"titleNumber": "<string>",
"titleName": "<string>",
"chapter": "<string>",
"chapterName": "<string>",
"sectionNumber": "<string>",
"sectionTitle": "<string>",
"displayPath": "<string>",
"breadcrumb": [
{}
],
"parent": {},
"subchapter": "<string>",
"subchapterName": "<string>",
"part": "<string>",
"partName": "<string>",
"subpart": "<string>",
"subpartName": "<string>",
"popularName": "<string>",
"actStatus": "<string>",
"goodLawStatus": "<string>",
"currencyNote": "<string>",
"renumberedTo": "<string>",
"transferredTo": "<string>",
"issueDate": "<string>",
"crossReferencesCfr": [
"<string>"
],
"crossReferencesUsc": [
"<string>"
],
"statutoryAuthority": [
{}
],
"implementingRegulations": [
{}
],
"frRegulationIdNumbers": [
"<string>"
],
"frDocketIds": [
"<string>"
],
"frEffectiveOn": "<string>",
"frCommentsCloseOn": "<string>",
"frSignificant": true,
"frCorrectionOf": "<string>",
"frCorrections": [
"<string>"
],
"frRegulationsDotGovUrl": "<string>",
"frRelatedDocuments": [
{
"actId": "<string>",
"citation": "<string>",
"title": "<string>",
"documentType": "<string>",
"publicationDate": "<string>"
}
],
"subject": "<string>",
"rescindedOn": "<string>",
"sourceCredit": "<string>",
"amendmentYears": [
123
],
"lastAmendedYear": 123,
"amendmentsCount": 123,
"currentThrough": "<string>",
"amendmentHistory": [
"<string>"
],
"sourceNote": "<string>",
"effectiveDate": "<string>",
"priorEffectiveDates": [
"<string>"
],
"history": "<string>",
"supersededBy": "<string>",
"supersedes": "<string>",
"ruleSet": "<string>",
"publicLaws": [
"<string>"
],
"federalRegisterCitations": [
"<string>"
],
"granuleId": "<string>",
"packageId": "<string>",
"htmlUrl": "<string>",
"pdfUrl": "<string>",
"xmlUrl": "<string>",
"textUrl": "<string>",
"docxUrl": "<string>",
"stateHtmlUrl": "<string>",
"govInfoHtmlUrl": "<string>",
"govInfoPdfUrl": "<string>",
"abstract": "This regulation extends time-limited tolerances for pesticides.",
"agencies": [
"Environmental Protection Agency"
],
"agencySlugs": [
"environmental-protection-agency"
],
"topics": [
"Environmental protection",
"Pesticides and pests"
],
"documentTypeLabel": "Rule",
"documentSubtype": "Proclamation",
"action": "Final rule.",
"president": "George W. Bush",
"signingDate": "2026-04-02",
"datesText": "This regulation is effective December 14, 2001.",
"frVolume": 66,
"frStartPage": 64768,
"frEndPage": 64775,
"wordCount": 6271,
"issuingAgency": "Pollution Control Board",
"adoptingCitations": [
"37 Ill. Reg. 16539"
],
"lawImplemented": "Section 4656.1, Public Resources Code",
"lastAmendedDate": "October 4, 2013",
"amendmentNote": "Amended at 37 Ill. Reg. 16539, effective October 4, 2013",
"currencyYear": 2025,
"reviewDate": "11/1/2028",
"originalEnactmentDate": "June 27, 1934",
"releaseDate": "2018-06-14",
"documentNumber": "21-CA-211066",
"caseName": "Dunn-Edwards Corp.",
"settlementAmount": "$16,500",
"requesters": [
"Preece, Inc."
],
"program": "Old-Age and Survivors Insurance",
"languageCode": "es",
"volume": 1,
"articleNumber": "1",
"articleName": "Declaration of Rights",
"ruleSetCode": "NDSUPCTADMINR",
"edition": "2025",
"relatedCitations": [
"RCW 28A.150.290"
],
"supersessionActions": {
"modifies": [
"Rev. Proc. 2011-47"
]
},
"licenseNote": "MIT (reglab/statecodes)",
"subtitle": "11",
"subtitleName": "AIR QUALITY",
"publisherKey": "430000000310400000000000000000000",
"versionId": "11948",
"referencedShortTitles": [
"Driftnet Modernization and Bycatch Reduction Act"
],
"subjectNumber": "47",
"audience": "All Persons Engaged in Marketing",
"sourceCharStart": 263194,
"sourceCharEnd": 264198,
"alternateCitations": [
"4 L.P.R.A. § 2077"
],
"expirationDate": "03-01-2029",
"committeeNote": "<string>",
"sourcePageStart": 114,
"sourcePageEnd": 114,
"displayLabel": "MPEP § 2165.03",
"publicationDate": "2001-12-14",
"publicLawCites": [
{}
],
"topLevelTitle": "Title 9: Criminal",
"externalUrl": "<string>"
}
],
"total": 17,
"truncated": false,
"note": "<string>",
"processingTimeMs": 74.2,
"creditsConsumed": 2
}{
"detail": "Insufficient API credits."
}{
"detail": "Insufficient API credits."
}{
"detail": "Insufficient API credits."
}{
"detail": [
{
"loc": [
"<string>"
],
"msg": "<string>",
"type": "<string>"
}
]
}{
"detail": "Insufficient API credits."
}Authorizations
API key issued from the developer dashboard. Pass as Authorization: Bearer vq_key_...
Path Parameters
Section identifier. Encodes the citation's hierarchy: USC_T42_C21_S1983 is Title 42, Chapter 21, Section 1983, the section a lawyer writes as 42 U.S.C. § 1983. Take it from a /us/statutes/search result rather than assembling it: the title and section are derivable from a citation, but the CHAPTER is not, so hand-built ids usually 404.
Required string length:
3 - 200Example:
"USC_T42_C21_S1983"
Query Parameters
Maximum citing sections to return.
Required range:
1 <= x <= 100Example:
25
Response
The section plus the sections citing it.
Response for GET /us/statutes/section/{act_id}/cited-by.
The section you asked about.
Show child attributes
Show child attributes
Sections whose text cross-references this one, in statutory order. Empty is a real answer: plenty of sections are cited by nothing.
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How many citing sections were returned. This is the size of citers, not a corpus-wide count: it is capped by limit.
Example:
17
True when more citing sections exist than limit allowed. Raise limit to see the rest.
Set only when the answer is not a real zero. Reverse citation is built on the cross-reference index, which exists for USC and CFR; for any other corpus this explains that the section is out of scope and the call is refunded. When it is null, an empty citers means nothing cites this section.
Server-side time for this request in milliseconds, excluding network transit. Useful for spotting a slow query; not billed on.
Example:
74.2
Credits actually charged for this call. Read it rather than assuming the list price: failed and refunded work bills 0.
Example:
2
Last modified on August 23, 2026
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