search_doffin

Search Norwegian public procurement notices on Doffin.

Signature: search_doffin(query: string, optional, default ''; types: list of string (comma-separated), optional, default None; statuses: list of string (comma-separated), optional, default None; contract_nature: list of string (comma-separated), optional, default None; cpv_codes: list of string (comma-separated), optional, default None; locations: list of string (comma-separated), optional, default None; buyer: list of string (comma-separated), optional, default None; winner: list of string (comma-separated), optional, default None; date_from: string, optional, default None; date_to: string, optional, default None; sort_by: string, optional, default 'RELEVANCE'; include_placeholders: yes/no, optional, default False; limit: integer, items, optional, default 25; offset: integer, items, optional, default 0)

Direct GET

For navigating agents: open the HTML page with parameters in the URL. The result is fetched and displayed without screenshots or form filling.

Open this validated HTML GET URL

https://allemannsdata.com/wiki/kilder/doffin/search_doffin/?query=&types={types}&statuses={statuses}&contract_nature={contract_nature}&cpv_codes={cpv_codes}&locations={locations}&buyer={buyer}&winner={winner}&date_from={date_from}&date_to={date_to}&sort_by=RELEVANCE&include_placeholders=false&limit=25&offset=0

Replace {query}, {types}, {statuses}, {contract_nature}, {cpv_codes}, {locations}, {buyer}, {winner}, {date_from}, {date_to}, {sort_by}, {include_placeholders} with values. Remove unused optional parameters from the URL.

For software and dashboards: Read the operation descriptor. The JSON GET template is https://allemannsdata.com/wiki/api/v1/kilder/doffin/search_doffin?query=&types={types}&statuses={statuses}&contract_nature={contract_nature}&cpv_codes={cpv_codes}&locations={locations}&buyer={buyer}&winner={winner}&date_from={date_from}&date_to={date_to}&sort_by=RELEVANCE&include_placeholders=false&limit=25&offset=0. Open this exact request as JSON.

ParameterRequirementJSON typeDescription
queryoptionalstringFree-text search (Norwegian or English), e.g. "IT-drift", "snørydding", "rammeavtale konsulent". Start here.
typesoptionalunionFilter by notice type. Parent types: PLANNING, COMPETITION, RESULT. Specific types: ANNOUNCEMENT_OF_COMPETITION, DYNAMIC_PURCHASING_SCHEME, QUALIFICATION_SCHEME, ANNOUNCEMENT_OF_INTENT, PRE_ANNOUNCEMENT, ADVISORY_NOTICE, NOTICE_ON_BUYER_PROFILE, ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT, CHANGE_OF_CONCLUSION_OF_CONTRACT, CANCELLED_OR_MISSING_CONCLUSION_OF_CONTRACT. Use ["COMPETITION"] + statuses=["ACTIVE"] for open tenders.
statusesoptionalunionACTIVE (open for bids), EXPIRED, AWARDED, CANCELLED.
contract_natureoptionalunionWORKS, SERVICES and/or SUPPLIES.
cpv_codesoptionalunion8-digit CPV codes, e.g. ["45000000"]. Matches the code and its children. Find codes with search_cpv_codes(). Best combined with a free-text query.
locationsoptionalunionNUTS-style location ids, e.g. ["NO060"] (Trøndelag), or "anyw" for non-location-bound. See list_location_codes().
buyeroptionalunionBuyer organization full name(s) exactly as written on notices, e.g. ["Trondheim kommune"]. Resolved to Doffin's internal buyer id via a free-text lookup; names that match no buyer are reported in "note" and, if none match, no results are returned (rather than an unfiltered search). Pass the 32-hex buyer id from a result's buyer field directly to skip the lookup.
winneroptionalunionDoffin's internal supplier id (32-hex). Winner names cannot be used - they are not present in search results to resolve against.
date_fromoptionalunionPublication date lower bound, "YYYY-MM-DD".
date_tooptionalunionPublication date upper bound, "YYYY-MM-DD".
sort_byoptionalstringRELEVANCE (default), PUBLICATION_DATE_DESC, PUBLICATION_DATE_ASC, DEADLINE, ESTIMATED_VALUE_ASC, ESTIMATED_VALUE_DESC.
include_placeholdersoptionalbooleanBy default, hits whose buyer fields look like unfilled eForm template values (org id 123456789, placeholder buyer names) are dropped from the results as junk. Set True to keep them, each flagged with "possible_placeholder": true.
limitoptionalintegerGateway page size; default 25, maximum 100.
offsetoptionalintegerNumber of list items to skip; default 0.
Generated JavaScript, Python and response structure

Use JSON when the user requests code, machine-readable data, value extraction or further computation. Use the HTML GET page to identify the correct source and verify parameters.

Example for generated JavaScript and Python

https://allemannsdata.com/wiki/api/v1/kilder/doffin/search_doffin?query=&types={types}&statuses={statuses}&contract_nature={contract_nature}&cpv_codes={cpv_codes}&locations={locations}&buyer={buyer}&winner={winner}&date_from={date_from}&date_to={date_to}&sort_by=RELEVANCE&include_placeholders=false&limit=25&offset=0

Replace URL placeholders and remove unused optional parameters.

JavaScript in a dashboard

const url = "https://allemannsdata.com/wiki/api/v1/kilder/doffin/search_doffin?query=&types={types}&statuses={statuses}&contract_nature={contract_nature}&cpv_codes={cpv_codes}&locations={locations}&buyer={buyer}&winner={winner}&date_from={date_from}&date_to={date_to}&sort_by=RELEVANCE&include_placeholders=false&limit=25&offset=0";
const response = await fetch(url);
if (!response.ok) {
  const failure = await response.json();
  throw new Error(`${failure.error.code}: ${failure.error.message} ${failure.suggestion}`);
}
const result = await response.json();
const data = result.data;

Python without additional packages

import json
from urllib.request import urlopen

url = "https://allemannsdata.com/wiki/api/v1/kilder/doffin/search_doffin?query=&types={types}&statuses={statuses}&contract_nature={contract_nature}&cpv_codes={cpv_codes}&locations={locations}&buyer={buyer}&winner={winner}&date_from={date_from}&date_to={date_to}&sort_by=RELEVANCE&include_placeholders=false&limit=25&offset=0"
with urlopen(url) as response:
    result = json.load(response)
data = result["data"]

Response structure

{
  "source": "doffin",
  "operation": "search_doffin",
  "parameters": {},
  "data": {},
  "entities": [],
  "_meta": {"retrieved_at": "...", "sources": [], "cache": {}},
  "_links": {"self": "...", "source": "...", "wiki": "...", "feedback": "..."}
}
Form for manual use

The form is a fallback for people and browser agents that cannot open the GET URL directly.

Type: string. Free-text search (Norwegian or English), e.g. "IT-drift", "snørydding", "rammeavtale konsulent". Start here.
Type: list of string (comma-separated). Filter by notice type. Parent types: PLANNING, COMPETITION, RESULT. Specific types: ANNOUNCEMENT_OF_COMPETITION, DYNAMIC_PURCHASING_SCHEME, QUALIFICATION_SCHEME, ANNOUNCEMENT_OF_INTENT, PRE_ANNOUNCEMENT, ADVISORY_NOTICE, NOTICE_ON_BUYER_PROFILE, ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT, CHANGE_OF_CONCLUSION_OF_CONTRACT, CANCELLED_OR_MISSING_CONCLUSION_OF_CONTRACT. Use ["COMPETITION"] + statuses=["ACTIVE"] for open tenders.
Type: list of string (comma-separated). ACTIVE (open for bids), EXPIRED, AWARDED, CANCELLED.
Type: list of string (comma-separated). WORKS, SERVICES and/or SUPPLIES.
Type: list of string (comma-separated). 8-digit CPV codes, e.g. ["45000000"]. Matches the code and its children. Find codes with search_cpv_codes(). Best combined with a free-text query.
Type: list of string (comma-separated). NUTS-style location ids, e.g. ["NO060"] (Trøndelag), or "anyw" for non-location-bound. See list_location_codes().
Type: list of string (comma-separated). Buyer organization full name(s) exactly as written on notices, e.g. ["Trondheim kommune"]. Resolved to Doffin's internal buyer id via a free-text lookup; names that match no buyer are reported in "note" and, if none match, no results are returned (rather than an unfiltered search). Pass the 32-hex buyer id from a result's buyer field directly to skip the lookup.
Type: list of string (comma-separated). Doffin's internal supplier id (32-hex). Winner names cannot be used - they are not present in search results to resolve against.
Type: string. Publication date lower bound, "YYYY-MM-DD".
Type: string. Publication date upper bound, "YYYY-MM-DD".
Type: string. RELEVANCE (default), PUBLICATION_DATE_DESC, PUBLICATION_DATE_ASC, DEADLINE, ESTIMATED_VALUE_ASC, ESTIMATED_VALUE_DESC.
Type: yes/no. By default, hits whose buyer fields look like unfilled eForm template values (org id 123456789, placeholder buyer names) are dropped from the results as junk. Set True to keep them, each flagged with "possible_placeholder": true.

Result

Source: Doffin and TED. Retrieved 2026-11-02T16:53:05Z in 0.161 seconds.

total_count:
7
hits:

7 results

  1. id:
    2026-110256
    buyer:

    1 results

    1. id:
      d83ebee1984ee99bdffe8ece9ca58d3e
      organization_id:
      971035854
      name:
      Universitetet i Oslo
    heading:
    Anleggsarbeid og infrastruktur ifm arkeologiske utgravninger
    description:
    Rammeavtale for utgravninger for Kulturhistorisk museum (KHM). Avtale er en oppfølger av rammeavtale ANSK-21-0316 hvor KHM har støttet seg på en større entreprenør ifm utgravningene.
    location_id:

    1 results

    1. anyw
    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2026-06-08T11:01:43Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2026-06-09
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  2. id:
    2026-100111
    buyer:

    1 results

    1. id:
      d34a1247b8397a12cf5d19cb4f004694
      organization_id:
      916882807
      name:
      Sandefjord Kommune
    heading:
    Kunngjøring kontrakt - Innleie av maskiner (med fører)
    description:
    Kunngjøring av kontrakt - Rammeavtale på innleie av anleggsmaskiner (med fører) og mannskaper til bruk i anleggs- og vedlikeholdsdriften i Sandefjord kommune.
    location_id:

    2 results

    1. NO094
    2. NO093
    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2026-01-05T07:41:29Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2026-01-06
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  3. id:
    2024-118490
    buyer:

    1 results

    1. id:
      fe1f147ca46a5ef49a6603bbc0bc9194
      organization_id:
      964951284
      name:
      Horten kommune
    heading:
    Rammeavtale entreprenører
    description:
    Oppdragsgiver har inngått rammeavtale for entreprenør- og anleggsgartnertjenester. Formålet med avtalen er å ha tilgjengelig kapasitet til gravetjenester og tilhørende rørleggertjenester (Anleggsrørlegger/ADK, og anleggsgartner, ved de oppdragene Horten kommune ikke utfører i egenregi.
    location_id:

    3 results

    1. NO094
    2. NO093
    3. NO091
    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2024-12-19T11:34:03Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2024-12-20
    placeOfPerformance:
    procurementStrategicLabels:

    1 results

    1. ENVIRONMENT_PROCUREMENT
  4. id:
    2023-634959
    buyer:

    1 results

    1. id:
      d34a1247b8397a12cf5d19cb4f004694
      organization_id:
      916882807
      name:
      Sandefjord Kommune
    heading:
    Snørydding og strøing i Sandefjord sentrum
    description:
    Kunngjøring gjelder kontraktstildeling på 4-årig avtale på vintervedlikehold i Sandefjord sentrum, med opsjon på ytterligere 1+1 år. Avtalen omfatter brøyting, strøing, snørydding og bortkjøring av snø fra gater og fortau i indre sentrumssone.
    location_id:

    3 results

    1. NO094
    2. NO093
    3. NO091
    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2023-10-16T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2023-10-16
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2022-624437
    buyer:

    1 results

    1. id:
      d34a1247b8397a12cf5d19cb4f004694
      organization_id:
      916882807
      name:
      Sandefjord Kommune
    heading:
    Innleie av maskiner (med og uten sjåfør)
    description:
    Kontraktskunngjøring - Rammeavtale på innleie av lastebiler og anleggsmaskiner (med og uten fører).
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2022-12-23T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2022-12-23
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  6. id:
    2022-372545
    buyer:

    1 results

    1. id:
      c235b34d5f99ddceca681fdc27cb21e3
      organization_id:
      913 482 778
      name:
      Renovasjon i Grenland IKS
    heading:
    Rammeavtale for kjøp av entreprenørtjenester
    description:
    Oppdragsgiver skal anskaffe rammeavtale for entreprenørtjenester i tilknytning til renovasjonsordningen i Grenland. Beskrivelse av tjenester som inngår i anskaffelsen og krav som stilles til leverandør og arbeider som inngår er nærmere beskrevet i vedlegg 1 til konkurransegrunnlaget.
    location_id:

    3 results

    1. NO094
    2. NO093
    3. NO091
    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2022-07-04T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2022-07-04
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  7. id:
    2020-311978
    buyer:

    1 results

    1. id:
      d34a1247b8397a12cf5d19cb4f004694
      organization_id:
      916882807
      name:
      Sandefjord Kommune
    heading:
    Kontrakt - Vinterdrift (12 roder) - 2020-2024
    description:
    Sandefjord kommune har etablert 4-årig avtale på vinterdrift av kommunale veier med traktor eller hjullaster.
    location_id:

    1 results

    1. anyw
    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2020-12-17T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2020-12-17
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

Show all fields in HTML
total_count:
7
hits:

7 results

  1. id:
    2026-110256
    buyer:

    1 results

    1. id:
      d83ebee1984ee99bdffe8ece9ca58d3e
      organization_id:
      971035854
      name:
      Universitetet i Oslo
    heading:
    Anleggsarbeid og infrastruktur ifm arkeologiske utgravninger
    description:
    Rammeavtale for utgravninger for Kulturhistorisk museum (KHM). Avtale er en oppfølger av rammeavtale ANSK-21-0316 hvor KHM har støttet seg på en større entreprenør ifm utgravningene.
    location_id:

    1 results

    1. anyw
    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2026-06-08T11:01:43Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2026-06-09
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  2. id:
    2026-100111
    buyer:

    1 results

    1. id:
      d34a1247b8397a12cf5d19cb4f004694
      organization_id:
      916882807
      name:
      Sandefjord Kommune
    heading:
    Kunngjøring kontrakt - Innleie av maskiner (med fører)
    description:
    Kunngjøring av kontrakt - Rammeavtale på innleie av anleggsmaskiner (med fører) og mannskaper til bruk i anleggs- og vedlikeholdsdriften i Sandefjord kommune.
    location_id:

    2 results

    1. NO094
    2. NO093
    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2026-01-05T07:41:29Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2026-01-06
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  3. id:
    2024-118490
    buyer:

    1 results

    1. id:
      fe1f147ca46a5ef49a6603bbc0bc9194
      organization_id:
      964951284
      name:
      Horten kommune
    heading:
    Rammeavtale entreprenører
    description:
    Oppdragsgiver har inngått rammeavtale for entreprenør- og anleggsgartnertjenester. Formålet med avtalen er å ha tilgjengelig kapasitet til gravetjenester og tilhørende rørleggertjenester (Anleggsrørlegger/ADK, og anleggsgartner, ved de oppdragene Horten kommune ikke utfører i egenregi.
    location_id:

    3 results

    1. NO094
    2. NO093
    3. NO091
    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2024-12-19T11:34:03Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2024-12-20
    placeOfPerformance:
    procurementStrategicLabels:

    1 results

    1. ENVIRONMENT_PROCUREMENT
  4. id:
    2023-634959
    buyer:

    1 results

    1. id:
      d34a1247b8397a12cf5d19cb4f004694
      organization_id:
      916882807
      name:
      Sandefjord Kommune
    heading:
    Snørydding og strøing i Sandefjord sentrum
    description:
    Kunngjøring gjelder kontraktstildeling på 4-årig avtale på vintervedlikehold i Sandefjord sentrum, med opsjon på ytterligere 1+1 år. Avtalen omfatter brøyting, strøing, snørydding og bortkjøring av snø fra gater og fortau i indre sentrumssone.
    location_id:

    3 results

    1. NO094
    2. NO093
    3. NO091
    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2023-10-16T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2023-10-16
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2022-624437
    buyer:

    1 results

    1. id:
      d34a1247b8397a12cf5d19cb4f004694
      organization_id:
      916882807
      name:
      Sandefjord Kommune
    heading:
    Innleie av maskiner (med og uten sjåfør)
    description:
    Kontraktskunngjøring - Rammeavtale på innleie av lastebiler og anleggsmaskiner (med og uten fører).
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2022-12-23T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2022-12-23
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  6. id:
    2022-372545
    buyer:

    1 results

    1. id:
      c235b34d5f99ddceca681fdc27cb21e3
      organization_id:
      913 482 778
      name:
      Renovasjon i Grenland IKS
    heading:
    Rammeavtale for kjøp av entreprenørtjenester
    description:
    Oppdragsgiver skal anskaffe rammeavtale for entreprenørtjenester i tilknytning til renovasjonsordningen i Grenland. Beskrivelse av tjenester som inngår i anskaffelsen og krav som stilles til leverandør og arbeider som inngår er nærmere beskrevet i vedlegg 1 til konkurransegrunnlaget.
    location_id:

    3 results

    1. NO094
    2. NO093
    3. NO091
    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2022-07-04T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2022-07-04
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  7. id:
    2020-311978
    buyer:

    1 results

    1. id:
      d34a1247b8397a12cf5d19cb4f004694
      organization_id:
      916882807
      name:
      Sandefjord Kommune
    heading:
    Kontrakt - Vinterdrift (12 roder) - 2020-2024
    description:
    Sandefjord kommune har etablert 4-årig avtale på vinterdrift av kommunale veier med traktor eller hjullaster.
    location_id:

    1 results

    1. anyw
    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2020-12-17T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2020-12-17
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

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How an AI agent should use this page

Ground rule: Navigate with HTML GET links to keep explanations and relationships. Use the page's JSON alternative only when concrete values must be extracted, compared or computed.

How to use the search_doffin lookup

  1. Replace the placeholders in the HTML GET template; remove optional parameters you do not need.
  2. Check types, units, limits and ID formats in the parameter table.
  3. Follow linked results to canonical pages before combining sources.

Misreading to avoid: An empty list means "no results for this lookup". An error message or unavailable source does not mean the data does not exist.

Source-specific next step

Go to the source page for other operations. Use the JSON template only after the HTML result shows that the parameters and source are correct.