| name | nia |
| description | Query the Northern Ireland Assembly Open Data API at data.niassembly.gov.uk — Members of the Legislative Assembly (MLAs, ~90 current), parties, constituencies, Hansard, written questions, departments, organisations, plenary divisions, motions and business diary. Wraps 35+ JSON operations across six ASMX services (members, hansard, committees, questions, organisations, plenary). Free, no auth. First-party to the NI Assembly; tier-3 from a Westminster perspective. Use when the question is about an MLA, an NI Assembly committee, a Stormont division, a question to an NI department, or NI electoral geography. |
| license | Open Government Licence v3.0 (Crown copyright; Northern Ireland Assembly) |
| metadata | {"facility":"nia","cli-alias":"nia","base-url":"http://data.niassembly.gov.uk","provenance":{"tier":3,"operator":"Northern Ireland Assembly","service":"data.niassembly.gov.uk (six ASMX services)","upstream-data":"Stormont Assembly procedural data: MLAs, Hansard, written questions, plenary motions and divisions, committees, organisations","citation-short":"via NI Assembly Open Data","citation-formal":"Northern Ireland Assembly Open Data API, retrieved {date}, OGL v3.0","confidence":"authoritative","confidence-notes":"Authoritative for Stormont procedural records. Each ASMX operation has _JSON, _JSONP and plain XML variants; the library uses _JSON. The data.niassembly.gov.uk site is HTTP-only (no HTTPS as of May 2026)."}} |
NI Assembly Open Data
Base URL: http://data.niassembly.gov.uk (HTTP only).
Six ASMX services, each with JSON operations. The library wraps the
_JSON variants — returns native JSON, no XML envelope.
Services + headline ops
| Service | Headline operations |
|---|
members.asmx | GetAllCurrentMembers, GetAllMembers, GetAllMembersByGivenDate, GetAllCurrentMembersByGivenConstituencyId, GetAllCurrentMembersByGivenPartyId, GetAllCurrentMembersBySurnameSearch, GetAllMemberContactDetails, GetMemberContactDetailsByPersonId, GetAllMemberRoles, GetMemberRolesByPersonId, GetAllConstituencies |
hansard.asmx | GetAllHansardReports, GetHansardComponentsByPlenaryDate, GetHansardComponentsByReportId, GetHansardComponentsByReportIdAndPersonId |
questions.asmx | GetQuestionDetails, GetQuestionsByDepartment, GetQuestionsByMember, GetQuestionsBySearchText |
organisations.asmx | GetAllPartyGroupsListCurrent, GetDepartmentListCurrent, GetOrganisationListCurrent, GetPartiesListCurrent |
plenary.asmx | GetBusinessDiary, GetDivisionResult, GetDivisionMemberVoting, GetMotionAmendments, GetMotionPetitionOfConcern, GetNoDayNamedMotions, GetPlenaryAddressees |
committees.asmx | (no _JSON ops yet; SOAP-only) |
CLI
parl nia current-members
parl nia parties
parl nia members-by-surname Aiken
parl nia questions-search "education"
parl nia diary 2026-05-01 2026-05-31
Joins to Westminster
- Stormont MLAs occasionally hold dual-mandates / move between
Stormont and Westminster — use Wikidata QIDs as the bridge
(
wd search "<name>").
- NI Assembly debates often reference Westminster legislation (e.g.
on the Northern Ireland Protocol, Windsor Framework); pair with
bills / hansard.
Provenance to cite
Tier 3 — third-party (NI Assembly), authoritative for Stormont.
- Inline cite: "(via NI Assembly Open Data)" — once per paragraph.
- For specific facts, name the operation + key (PersonId,
ConstituencyId, QuestionId).
- See
../../docs/provenance.md.
