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 2026-09-30T23:59:06Z in 0.152 seconds.

total_count:
6
hits:

6 results

  1. id:
    2021-378679
    buyer:

    1 results

    1. id:
      8258994a1c9a2c9b60041b1ad1b5b115
      organization_id:
      994598759
      name:
      Norsk Helsenett SF
    heading:
    Renhold SLV Oslo
    description:
    Leverandøren skal utføre renholdstjenester i Statens legemiddelverk sine lokaler i Grensesvingen 26 i Oslo på 4826 kvm over 7 etasjer.
    location_id:

    1 results

    1. NO081
    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:
    2021-06-18T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2021-06-18
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  2. id:
    2019-363732
    buyer:

    1 results

    1. id:
      7fcceaaff6948f767e629e00b5fcc8d1
      organization_id:
      916879067
      name:
      SYKEHUSINNKJØP HF
    heading:
    Vaktmestertjenester til OUS HF
    description:
    Denne anskaffelsen gjennomføres av Sykehusinnkjøp HF på vegne av Oslo universitetssykehus HF. Oppdragsgiver ønsker tilbud på en rammeavtale for kjøp av vaktmestertjenester. Anskaffelsens formål er å dekke behovet for vaktmestertjenester ved Oslo universitetssykehus sine lokasjoner. Vaktmestertjenester bestilles ved behov.
    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:
    2019-04-24T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2019-04-24
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  3. id:
    2019-343691
    buyer:

    1 results

    1. id:
      2d20aebe07a30c63c7054478dd4c8496
      organization_id:
      971 032 081
      name:
      Statens vegvesen
    heading:
    Kjøp av Renhold i Vegdirektoratet
    description:
    Oppdragsgiver ønsker tilbud på levering av renholdstjenester til Statens vegvesen Vegdirektoratet. Per i dag er det 2 bygg lokalisert på samme adresse med ca. 1000 arbeidsplasser. Rengjøringen skal kontrolleres ut i fra Den nordiske standard INSTA 800 (NS-INSTA 800:2018 Rengjøringskvalitet – System for å fastsette og bedømme rengjøringskvalitet).
    location_id:

    1 results

    1. NO0
    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:
    2019-04-24T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2019-04-24
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  4. id:
    2019-356837
    buyer:

    1 results

    1. id:
      1ec60ce623cbaa2b243d1ce55863be9e
      organization_id:
      874 783 242
      name:
      Kystverket
    heading:
    Renholdstjenester Kystverket, Horten
    description:
    Anskaffelsen gjelder renhold av Kystverkets lokaler i Horten. Avtaleperiode vil være 2 år + 2år opsjon. I tillegg til daglig renhold omfatter forespørselen bestillingsrenhold uten for faste rutiner. Befaring av lokalene avtales med Bente.søndersrød@kystverket.no. Kontrakten forventes med oppstart 1. april 2019.
    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:
    2019-03-05T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2019-03-05
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2018-590202
    buyer:

    1 results

    1. id:
      0f5223b4541cca6e7a1cfe09866c2ef9
      organization_id:
      971278374
      name:
      STATSBYGG
    heading:
    Avtale om skjøtselsarbeider ved Bygdø Kongsgård
    description:
    Statsbygg ber om tilbud på avtale for Skjøtselsarbeider ved Bygdø Kongsgård, øvrig bygningsmasse. Skjøtselsarbeidene ved denne eiendommen omfatter flere tjenester enn normalt for andre eiendommer. I tillegg til ordinær grønn skjøtsel, skal leverandøren utplassere et tilstrekkelig antall avfallsbeholdere og toaletter, og det skal gjennomføres regelmessig opprydding og avfallsinnhenting på områdene.
    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:
    2018-07-05T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2018-07-05
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  6. id:
    2020-302430
    buyer:

    1 results

    1. id:
      e7797657e14c46596f6c177b9d9d5dcd
      organization_id:
      985 987 246
      name:
      Oslo kommune v/ Omsorgsbygg Oslo KF
    heading:
    Åpen anbudskonkurranse for kjøp av rammeavtale for driftsteknikertjenester
    description:
    Oslo kommune v/ Omsorgsbygg Oslo KF, heretter kalt oppdragsgiver, inviterer til åpen anbudskonkurranse i forbindelse med anskaffelse av rammeavtale for kjøp av driftsteknikertjenester. Formålet med anskaffelsen er å sikre at de eiendommer som ikke har egne driftsteknikere får utført de driftsoppgaver som tilligger Omsorgsbygg Oslo KF, som eier av byggene.
    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:
    2020-02-27T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2020-02-27
    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:
    2021-378679
    buyer:

    1 results

    1. id:
      8258994a1c9a2c9b60041b1ad1b5b115
      organization_id:
      994598759
      name:
      Norsk Helsenett SF
    heading:
    Renhold SLV Oslo
    description:
    Leverandøren skal utføre renholdstjenester i Statens legemiddelverk sine lokaler i Grensesvingen 26 i Oslo på 4826 kvm over 7 etasjer.
    location_id:

    1 results

    1. NO081
    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:
    2021-06-18T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2021-06-18
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  2. id:
    2019-363732
    buyer:

    1 results

    1. id:
      7fcceaaff6948f767e629e00b5fcc8d1
      organization_id:
      916879067
      name:
      SYKEHUSINNKJØP HF
    heading:
    Vaktmestertjenester til OUS HF
    description:
    Denne anskaffelsen gjennomføres av Sykehusinnkjøp HF på vegne av Oslo universitetssykehus HF. Oppdragsgiver ønsker tilbud på en rammeavtale for kjøp av vaktmestertjenester. Anskaffelsens formål er å dekke behovet for vaktmestertjenester ved Oslo universitetssykehus sine lokasjoner. Vaktmestertjenester bestilles ved behov.
    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:
    2019-04-24T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2019-04-24
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  3. id:
    2019-343691
    buyer:

    1 results

    1. id:
      2d20aebe07a30c63c7054478dd4c8496
      organization_id:
      971 032 081
      name:
      Statens vegvesen
    heading:
    Kjøp av Renhold i Vegdirektoratet
    description:
    Oppdragsgiver ønsker tilbud på levering av renholdstjenester til Statens vegvesen Vegdirektoratet. Per i dag er det 2 bygg lokalisert på samme adresse med ca. 1000 arbeidsplasser. Rengjøringen skal kontrolleres ut i fra Den nordiske standard INSTA 800 (NS-INSTA 800:2018 Rengjøringskvalitet – System for å fastsette og bedømme rengjøringskvalitet).
    location_id:

    1 results

    1. NO0
    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:
    2019-04-24T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2019-04-24
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  4. id:
    2019-356837
    buyer:

    1 results

    1. id:
      1ec60ce623cbaa2b243d1ce55863be9e
      organization_id:
      874 783 242
      name:
      Kystverket
    heading:
    Renholdstjenester Kystverket, Horten
    description:
    Anskaffelsen gjelder renhold av Kystverkets lokaler i Horten. Avtaleperiode vil være 2 år + 2år opsjon. I tillegg til daglig renhold omfatter forespørselen bestillingsrenhold uten for faste rutiner. Befaring av lokalene avtales med Bente.søndersrød@kystverket.no. Kontrakten forventes med oppstart 1. april 2019.
    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:
    2019-03-05T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2019-03-05
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2018-590202
    buyer:

    1 results

    1. id:
      0f5223b4541cca6e7a1cfe09866c2ef9
      organization_id:
      971278374
      name:
      STATSBYGG
    heading:
    Avtale om skjøtselsarbeider ved Bygdø Kongsgård
    description:
    Statsbygg ber om tilbud på avtale for Skjøtselsarbeider ved Bygdø Kongsgård, øvrig bygningsmasse. Skjøtselsarbeidene ved denne eiendommen omfatter flere tjenester enn normalt for andre eiendommer. I tillegg til ordinær grønn skjøtsel, skal leverandøren utplassere et tilstrekkelig antall avfallsbeholdere og toaletter, og det skal gjennomføres regelmessig opprydding og avfallsinnhenting på områdene.
    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:
    2018-07-05T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2018-07-05
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  6. id:
    2020-302430
    buyer:

    1 results

    1. id:
      e7797657e14c46596f6c177b9d9d5dcd
      organization_id:
      985 987 246
      name:
      Oslo kommune v/ Omsorgsbygg Oslo KF
    heading:
    Åpen anbudskonkurranse for kjøp av rammeavtale for driftsteknikertjenester
    description:
    Oslo kommune v/ Omsorgsbygg Oslo KF, heretter kalt oppdragsgiver, inviterer til åpen anbudskonkurranse i forbindelse med anskaffelse av rammeavtale for kjøp av driftsteknikertjenester. Formålet med anskaffelsen er å sikre at de eiendommer som ikke har egne driftsteknikere får utført de driftsoppgaver som tilligger Omsorgsbygg Oslo KF, som eier av byggene.
    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:
    2020-02-27T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2020-02-27
    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.