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'; page: integer, optional, default 1; hits_per_page: integer, optional, default 10; 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&page=1&hits_per_page=10&include_placeholders=false&limit=25&offset=0

Replace {query}, {types}, {statuses}, {contract_nature}, {cpv_codes}, {locations}, {buyer}, {winner}, {date_from}, {date_to}, {sort_by}, {page}, {hits_per_page}, {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&page=1&hits_per_page=10&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.
pageoptionalinteger1-based page number.
hits_per_pageoptionalinteger1-50 (default 10).
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&page=1&hits_per_page=10&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&page=1&hits_per_page=10&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&page=1&hits_per_page=10&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: integer. 1-based page number.
Type: integer. 1-50 (default 10).
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 2026-09-29T20:30:45Z in 0.150 seconds.

total_count:
6
hits:

6 results

  1. id:
    2024-109913
    buyer:

    1 results

    1. id:
      24f5002b4816434bef14ce06b9b57b12
      organization_id:
      940 101 808
      name:
      Tromsø kommune
    heading:
    Rammeavtale - ventilasjonsanlegg: service, kontroll og installasjon
    description:
    Tromsø kommune lyser ut konkurranse på service, kontroll og installasjonsoppdrag knyttet til ventilasjonsanlegg. Se konkurransegrunnlaget for nærmere informasjon.
    location_id:

    3 results

    1. NO074
    2. NO073
    3. NO072
    estimatedValue:
    currencyCode:
    NOK
    amount:
    28000000.0
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2024-06-27T07:14:08Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2024-06-28
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  2. id:
    2020-376161
    buyer:

    1 results

    1. id:
      24f5002b4816434bef14ce06b9b57b12
      organization_id:
      940101808
      name:
      Tromsø Kommune
    heading:
    Kontraktstildeling - Rammeavtale for ventilasjonsanlegg - service og filterbytte
    description:
    Tromsø kommune har inngått rammeavtalen med leverandør som kan levere filter og utføre service på ventilasjonsanlegg. Rammeavtalen har en varighet på 2 år, med mulighet for forlengelse med inntil 2 år.
    location_id:

    3 results

    1. NO074
    2. NO073
    3. NO072
    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:
    2020-10-06T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2020-10-06
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  3. id:
    2021-305796
    buyer:

    1 results

    1. id:
      8258994a1c9a2c9b60041b1ad1b5b115
      organization_id:
      994598759
      name:
      Norsk Helsenett SF
    heading:
    Totalentreprise for bygging av nytt kjølerom og oppgradering av eksisterende kjøle- og fryseanlegg til vaksineforsyningslokaler - Folkehelseinstituttet
    description:
    Folkehelseinstituttet (Byggherre) skal bygge nytt kjølerom for å øke kjøleroms kapasiteten og oppgradering av eksisterende kjøle- og fryseanlegg i vaksineforsyningens lokaler.
    location_id:

    1 results

    1. NO08
    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:
    2021-06-24T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    no
    publicationDate:
    2021-06-24
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  4. id:
    2018-340106
    buyer:

    1 results

    1. id:
      294d3d3b0cafdb06343388f40916c97e
      organization_id:
      981 548 183
      name:
      MK Eiendom KF
    heading:
    Frikjøling til ventilasjon - utvidelse av varmepumpeanlegg
    description:
    Det er i 2017 installert et nytt bergvarmebasert varmepumpesystem på Orkerød Sykehjem. MKEiendom KF ønsker å utvide dette med frikjøling av ventilasjonsluft ved å installere nødvendig utstyr i varmesentral og legge nye kjølerør ut til eksisterende ventilasjonsaggregater som får innmontert nye kjølebatterier. Byggherren er interessert i å ta i bruk glassfiberarmerte PP-R rør og deler, det skal derfor oppgis opsjonspris på levering av rørnett i henhold til kravspesifikasjon. Tilbudsbefaring på Orkerød sykehjem mandag 20. august kl. 9.00. Oppmøte i hovedinngang/resepsjon.
    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:
    2018-09-24T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    no
    publicationDate:
    2018-09-24
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2018-311506
    buyer:

    1 results

    1. id:
      c212e64e581b6214eb8fa016d3e17a3b
      organization_id:
      939 991 034
      name:
      Porsgrunn Kommune, Eiendomsforvaltningen
    heading:
    Totalentreprise for Varmepumper
    description:
    Konkurransen gjelder anskaffelse av varmepumper inkludert alt tilhørende arbeid (komplett leveranse) i flere av Porsgrunn kommunes bygninger. Det vises til Dokument 3 Kravspesifikasjon for omfanget av denne anskaffelsen. Verdien anslås til ca NOK 2,2 mill.
    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:
    2018-11-01T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    no
    publicationDate:
    2018-11-01
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  6. id:
    2018-853462
    buyer:

    1 results

    1. id:
      37713fdb638d7b551a4934f437c90424
      organization_id:
      958501420
      name:
      Hadsel Kommune
    heading:
    Utbygging av Stokmarknes SFO
    description:
    Hadsel Eiendom KF som byggherre skal bygge på eksisterende SFO-bygg i Skarvegen på Stokmarknes i Hadsel Kommune. Prosjektet består av et tilbygg på sørsiden av eksisterende bygg, med ca. 90 kvm for hovedetasjen og kjellerrom til lager og teknisk rom på ca. 70 kvm.
    location_id:

    No results.

    estimatedValue:
    currencyCode:
    NOK
    amount:
    3300000.0
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. COMPETITION
    2. ANNOUNCEMENT_OF_COMPETITION
    status:
    EXPIRED
    issueDate:
    2018-01-04T10:00:00Z
    deadline:
    2018-02-05T10:00:00Z
    sentToTed:
    yes
    publicationDate:
    2018-01-04
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

limit:
25
offset:
0
returned:
6
has_more_results:
no
truncated:
no
Show all fields in HTML
total_count:
6
hits:

6 results

  1. id:
    2024-109913
    buyer:

    1 results

    1. id:
      24f5002b4816434bef14ce06b9b57b12
      organization_id:
      940 101 808
      name:
      Tromsø kommune
    heading:
    Rammeavtale - ventilasjonsanlegg: service, kontroll og installasjon
    description:
    Tromsø kommune lyser ut konkurranse på service, kontroll og installasjonsoppdrag knyttet til ventilasjonsanlegg. Se konkurransegrunnlaget for nærmere informasjon.
    location_id:

    3 results

    1. NO074
    2. NO073
    3. NO072
    estimatedValue:
    currencyCode:
    NOK
    amount:
    28000000.0
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2024-06-27T07:14:08Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2024-06-28
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  2. id:
    2020-376161
    buyer:

    1 results

    1. id:
      24f5002b4816434bef14ce06b9b57b12
      organization_id:
      940101808
      name:
      Tromsø Kommune
    heading:
    Kontraktstildeling - Rammeavtale for ventilasjonsanlegg - service og filterbytte
    description:
    Tromsø kommune har inngått rammeavtalen med leverandør som kan levere filter og utføre service på ventilasjonsanlegg. Rammeavtalen har en varighet på 2 år, med mulighet for forlengelse med inntil 2 år.
    location_id:

    3 results

    1. NO074
    2. NO073
    3. NO072
    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:
    2020-10-06T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2020-10-06
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  3. id:
    2021-305796
    buyer:

    1 results

    1. id:
      8258994a1c9a2c9b60041b1ad1b5b115
      organization_id:
      994598759
      name:
      Norsk Helsenett SF
    heading:
    Totalentreprise for bygging av nytt kjølerom og oppgradering av eksisterende kjøle- og fryseanlegg til vaksineforsyningslokaler - Folkehelseinstituttet
    description:
    Folkehelseinstituttet (Byggherre) skal bygge nytt kjølerom for å øke kjøleroms kapasiteten og oppgradering av eksisterende kjøle- og fryseanlegg i vaksineforsyningens lokaler.
    location_id:

    1 results

    1. NO08
    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:
    2021-06-24T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    no
    publicationDate:
    2021-06-24
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  4. id:
    2018-340106
    buyer:

    1 results

    1. id:
      294d3d3b0cafdb06343388f40916c97e
      organization_id:
      981 548 183
      name:
      MK Eiendom KF
    heading:
    Frikjøling til ventilasjon - utvidelse av varmepumpeanlegg
    description:
    Det er i 2017 installert et nytt bergvarmebasert varmepumpesystem på Orkerød Sykehjem. MKEiendom KF ønsker å utvide dette med frikjøling av ventilasjonsluft ved å installere nødvendig utstyr i varmesentral og legge nye kjølerør ut til eksisterende ventilasjonsaggregater som får innmontert nye kjølebatterier. Byggherren er interessert i å ta i bruk glassfiberarmerte PP-R rør og deler, det skal derfor oppgis opsjonspris på levering av rørnett i henhold til kravspesifikasjon. Tilbudsbefaring på Orkerød sykehjem mandag 20. august kl. 9.00. Oppmøte i hovedinngang/resepsjon.
    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:
    2018-09-24T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    no
    publicationDate:
    2018-09-24
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2018-311506
    buyer:

    1 results

    1. id:
      c212e64e581b6214eb8fa016d3e17a3b
      organization_id:
      939 991 034
      name:
      Porsgrunn Kommune, Eiendomsforvaltningen
    heading:
    Totalentreprise for Varmepumper
    description:
    Konkurransen gjelder anskaffelse av varmepumper inkludert alt tilhørende arbeid (komplett leveranse) i flere av Porsgrunn kommunes bygninger. Det vises til Dokument 3 Kravspesifikasjon for omfanget av denne anskaffelsen. Verdien anslås til ca NOK 2,2 mill.
    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:
    2018-11-01T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    no
    publicationDate:
    2018-11-01
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  6. id:
    2018-853462
    buyer:

    1 results

    1. id:
      37713fdb638d7b551a4934f437c90424
      organization_id:
      958501420
      name:
      Hadsel Kommune
    heading:
    Utbygging av Stokmarknes SFO
    description:
    Hadsel Eiendom KF som byggherre skal bygge på eksisterende SFO-bygg i Skarvegen på Stokmarknes i Hadsel Kommune. Prosjektet består av et tilbygg på sørsiden av eksisterende bygg, med ca. 90 kvm for hovedetasjen og kjellerrom til lager og teknisk rom på ca. 70 kvm.
    location_id:

    No results.

    estimatedValue:
    currencyCode:
    NOK
    amount:
    3300000.0
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. COMPETITION
    2. ANNOUNCEMENT_OF_COMPETITION
    status:
    EXPIRED
    issueDate:
    2018-01-04T10:00:00Z
    deadline:
    2018-02-05T10:00:00Z
    sentToTed:
    yes
    publicationDate:
    2018-01-04
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

limit:
25
offset:
0
returned:
6
has_more_results:
no
truncated:
no
Will you use the result in generated code?

Open the same result as JSON

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Continue exploring

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.