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 2026-10-27T03:20:15Z in 0.270 seconds.

total_count:
6
hits:

6 results

  1. id:
    2025-113230
    buyer:

    1 results

    1. id:
      46a2be9f3ab71bf96cf7390c2d459d45
      organization_id:
      939 760 946
      name:
      Volda Kommune
    heading:
    Konsulentbistand områderegulering indre sentrumssone - Volda kommune
    description:
    Målsettinga med anskaffinga er å få utarbeidd eit komplett planforslag med plankart, planomtale med konsekvensutgreiing, føresegner, ROS-analyse, illustrasjonar og supplering av kunnskapsgrunnlaget, jf. planprogrammet. Sjå konkurransegrunnlagets punkt 2 "Anskaffingsgjenstanden" for meir informasjon.
    location_id:

    1 results

    1. anyw
    estimatedValue:
    currencyCode:
    NOK
    amount:
    2600000.0
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2025-09-15T07:04:29Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2025-09-16
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  2. id:
    2022-327373
    buyer:

    1 results

    1. id:
      42f745e8d75c426617666d6bb0f9d42b
      organization_id:
      921 369 417
      name:
      Senja kommune
    heading:
    Kostebil for veier og gateanlegg
    description:
    Senja kommune skal anskaffe en ny kostebil med volum for slambeholder ca 7 m3 og vannbeholdervolum ca 1600 l. Kostebilen skal brukes til feiing og rengjøring av veier og gateanlegg.
    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:
    2022-01-05T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2022-01-05
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  3. id:
    2021-327612
    buyer:

    1 results

    1. id:
      6d555c5dfed661cd6f62c0350205a4e4
      organization_id:
      920 817 521
      name:
      Moss kommune
    heading:
    Feiebil - fornyet kunngjøring
    description:
    Formålet med anskaffelsen er å inngå kontrakt om kjøp av komplett feiebil. Fullstendig beskrivelse av anskaffelsen følger av oppdragsgivers kravspesifikasjon.
    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:
    2021-01-11T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2021-01-11
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  4. id:
    2023-680559
    buyer:

    1 results

    1. id:
      f6d4ee0b1cab7d220f3adf3bfc519388
      organization_id:
      986 074 988
      name:
      Ålesund kommunale eiendom KF
    heading:
    Anskaffelse - Flytting og reetablering av moduler ved Flisnes skole, 2023
    description:
    Ålesund kommune, ved Ålesund Kommunale Eigedom KF (ÅKE), skal etablere midlertidige undervisningsareal på Flisnes skole, i form av flytting av 42 moduler fordelt på 2 etasjer. Dette vil tilføre skolen ca. 950 kvm nettoareal. Prosjektet omfatter komplett demontering av moduler på adressen Hatlaskaret 9, kraning og transportering av moduler fra nåværende til ny plassering, og reetablering/remontering av moduler. Det skal i tillegg etableres et nytt trapperom mot nord og nytt komplett tak med taktekking. Ved ny adresse skal nødvendig fundamentering med peling og tilhørende grunnarbeid utføres. Nødvendig grøfting til vvs, el. anlegg, dataanlegg, brannanlegg etc. skal være inkludert. Det forventes at arbeidene har oppstart så snart som mulig etter kontraktsinngåelse. Frist for ferdigstillelse er snarest mulig.
    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:
    2023-12-01T11:00:00Z
    deadline:
    not reported by source
    sentToTed:
    no
    publicationDate:
    2023-12-01
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2019-314599
    buyer:

    1 results

    1. id:
      49c99e0774abe91759efcadbe4e7b3e6
      organization_id:
      935 478 715
      name:
      Bærum kommune
    heading:
    Rammeavtale for kjøp av landskapsarkitekttjenester (LARK)
    description:
    Formålet med denne anskaffelsen er å inngå 3 parallelle rammeavtaler med leverandører av landskapsarkitekttjenester. Rammeavtalene vil omfatte forskjellige typer oppdrag innenfor landskapsarkitektfaget. Oppdragene vil normalt følge Bærum kommunes prosjektmetodikk og forholde seg til de ulike fasene i prosjektmodellen.
    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:
    2019-12-24T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2019-12-24
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  6. id:
    2022-988384
    buyer:

    1 results

    1. id:
      0b2f10c7359dda4532f96e2055f8f8af
      organization_id:
      969 159 570
      name:
      Norges miljø- og biovitenskapelige universitet
    heading:
    Rammeavtale arkitekttjenester NMBU 2022-2026
    description:
    NMBU har til hensikt å inngå parallelle rammeavtaler for arkitekttjenester. Avtalene har til hensikt å dekke NMBU sitt behov for slike tjenester. Konkurransen er inndelt i delkontrakter som omfatter områdene ARK, IARK og LARK
    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:
    2022-08-26T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2022-08-26
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

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

6 results

  1. id:
    2025-113230
    buyer:

    1 results

    1. id:
      46a2be9f3ab71bf96cf7390c2d459d45
      organization_id:
      939 760 946
      name:
      Volda Kommune
    heading:
    Konsulentbistand områderegulering indre sentrumssone - Volda kommune
    description:
    Målsettinga med anskaffinga er å få utarbeidd eit komplett planforslag med plankart, planomtale med konsekvensutgreiing, føresegner, ROS-analyse, illustrasjonar og supplering av kunnskapsgrunnlaget, jf. planprogrammet. Sjå konkurransegrunnlagets punkt 2 "Anskaffingsgjenstanden" for meir informasjon.
    location_id:

    1 results

    1. anyw
    estimatedValue:
    currencyCode:
    NOK
    amount:
    2600000.0
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2025-09-15T07:04:29Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2025-09-16
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  2. id:
    2022-327373
    buyer:

    1 results

    1. id:
      42f745e8d75c426617666d6bb0f9d42b
      organization_id:
      921 369 417
      name:
      Senja kommune
    heading:
    Kostebil for veier og gateanlegg
    description:
    Senja kommune skal anskaffe en ny kostebil med volum for slambeholder ca 7 m3 og vannbeholdervolum ca 1600 l. Kostebilen skal brukes til feiing og rengjøring av veier og gateanlegg.
    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:
    2022-01-05T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2022-01-05
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  3. id:
    2021-327612
    buyer:

    1 results

    1. id:
      6d555c5dfed661cd6f62c0350205a4e4
      organization_id:
      920 817 521
      name:
      Moss kommune
    heading:
    Feiebil - fornyet kunngjøring
    description:
    Formålet med anskaffelsen er å inngå kontrakt om kjøp av komplett feiebil. Fullstendig beskrivelse av anskaffelsen følger av oppdragsgivers kravspesifikasjon.
    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:
    2021-01-11T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2021-01-11
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  4. id:
    2023-680559
    buyer:

    1 results

    1. id:
      f6d4ee0b1cab7d220f3adf3bfc519388
      organization_id:
      986 074 988
      name:
      Ålesund kommunale eiendom KF
    heading:
    Anskaffelse - Flytting og reetablering av moduler ved Flisnes skole, 2023
    description:
    Ålesund kommune, ved Ålesund Kommunale Eigedom KF (ÅKE), skal etablere midlertidige undervisningsareal på Flisnes skole, i form av flytting av 42 moduler fordelt på 2 etasjer. Dette vil tilføre skolen ca. 950 kvm nettoareal. Prosjektet omfatter komplett demontering av moduler på adressen Hatlaskaret 9, kraning og transportering av moduler fra nåværende til ny plassering, og reetablering/remontering av moduler. Det skal i tillegg etableres et nytt trapperom mot nord og nytt komplett tak med taktekking. Ved ny adresse skal nødvendig fundamentering med peling og tilhørende grunnarbeid utføres. Nødvendig grøfting til vvs, el. anlegg, dataanlegg, brannanlegg etc. skal være inkludert. Det forventes at arbeidene har oppstart så snart som mulig etter kontraktsinngåelse. Frist for ferdigstillelse er snarest mulig.
    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:
    2023-12-01T11:00:00Z
    deadline:
    not reported by source
    sentToTed:
    no
    publicationDate:
    2023-12-01
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2019-314599
    buyer:

    1 results

    1. id:
      49c99e0774abe91759efcadbe4e7b3e6
      organization_id:
      935 478 715
      name:
      Bærum kommune
    heading:
    Rammeavtale for kjøp av landskapsarkitekttjenester (LARK)
    description:
    Formålet med denne anskaffelsen er å inngå 3 parallelle rammeavtaler med leverandører av landskapsarkitekttjenester. Rammeavtalene vil omfatte forskjellige typer oppdrag innenfor landskapsarkitektfaget. Oppdragene vil normalt følge Bærum kommunes prosjektmetodikk og forholde seg til de ulike fasene i prosjektmodellen.
    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:
    2019-12-24T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2019-12-24
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  6. id:
    2022-988384
    buyer:

    1 results

    1. id:
      0b2f10c7359dda4532f96e2055f8f8af
      organization_id:
      969 159 570
      name:
      Norges miljø- og biovitenskapelige universitet
    heading:
    Rammeavtale arkitekttjenester NMBU 2022-2026
    description:
    NMBU har til hensikt å inngå parallelle rammeavtaler for arkitekttjenester. Avtalene har til hensikt å dekke NMBU sitt behov for slike tjenester. Konkurransen er inndelt i delkontrakter som omfatter områdene ARK, IARK og LARK
    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:
    2022-08-26T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2022-08-26
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

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

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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.