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 2026-09-25T23:51:15Z in 0.147 seconds.

total_count:
6
hits:

6 results

  1. id:
    2026-101611
    buyer:

    1 results

    1. id:
      c882ebae51fdf3173bdfcbdeca10c48f
      organization_id:
      974761157
      name:
      Politiets fellestjenester
    heading:
    Simulatorløsning
    description:
    Anskaffelsen skal dekke oppdragsgivers behov for simulatorløsning til bevisinstrument Evidenzer Mobile 240. Avtalen skal gjelde for Politi- og lensmannsetaten. For nærmere informasjon se konkurransegrunnlaget i sin helhet.
    location_id:

    1 results

    1. NO020
    estimatedValue:
    currencyCode:
    NOK
    amount:
    12600000.0
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2026-01-21T11:01:02Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2026-01-22
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  2. id:
    2025-112264
    buyer:

    1 results

    1. id:
      c882ebae51fdf3173bdfcbdeca10c48f
      organization_id:
      974761157
      name:
      Politiets fellestjenester
    heading:
    Simulatorløsning
    description:
    Anskaffelsen skal dekke oppdragsgivers behov for simulatorløsning til bevisinstrument Evidenzer Mobile 240. Avtalen skal gjelde for Politi- og lensmannsetaten. For nærmere informasjon se konkurransegrunnlaget i sin helhet.
    location_id:

    1 results

    1. NO020
    estimatedValue:
    currencyCode:
    NOK
    amount:
    12600000.0
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. COMPETITION
    2. ANNOUNCEMENT_OF_COMPETITION
    status:
    AWARDED
    issueDate:
    2025-08-25T11:42:12Z
    deadline:
    2025-10-29T11:00:00Z
    sentToTed:
    yes
    publicationDate:
    2025-08-27
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  3. id:
    2022-387008
    buyer:

    1 results

    1. id:
      c882ebae51fdf3173bdfcbdeca10c48f
      organization_id:
      974 761 157
      name:
      Politiets Fellestjenester
    heading:
    Simulatorløsning
    description:
    Formålet med anskaffelsen er å inngå rammeavtale for leveranse av simulatorløsning. Med simulatorløsning menes en løsning av etanol i vann med en bestemt konsentrasjon. Produktet benyttes ved periodisk kontroll av bevisinstrument for alkoholutåndingsprøver. Bevisinstrumentet som benyttes er av type Evidenzer Mobile 240.
    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:
    2022-02-23T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2022-02-23
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  4. id:
    2021-371917
    buyer:

    1 results

    1. id:
      c882ebae51fdf3173bdfcbdeca10c48f
      organization_id:
      974 761 157
      name:
      Politiets fellestjenester
    heading:
    Simulatorløsning
    description:
    Formålet med anskaffelsen er å inngå rammeavtale for leveranse av simulatorløsning. Med simulatorløsning menes en løsning av etanol i vann med en bestemt konsentrasjon. Produktet benyttes ved periodisk kontroll av bevisinstrument for alkoholutåndingsprøver. Bevisinstrumentet som benyttes er av type Evidenzer Mobile 240.
    location_id:

    No results.

    estimatedValue:
    currencyCode:
    NOK
    amount:
    1200000.0
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. COMPETITION
    2. ANNOUNCEMENT_OF_COMPETITION
    status:
    EXPIRED
    issueDate:
    2021-11-30T10:00:00Z
    deadline:
    2022-01-07T10:00:00Z
    sentToTed:
    yes
    publicationDate:
    2021-11-30
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2017-068999
    buyer:

    1 results

    1. id:
      c882ebae51fdf3173bdfcbdeca10c48f
      organization_id:
      974 761 157
      name:
      Politiets fellestjenester
    heading:
    Simulatorløsning
    description:
    Formålet med anskaffelsen er å inngå rammeavtale for leveranse av simulatorløsning (kalibreringsvæske). Med simulatorløsning menes en løsning av etanol i vann med en bestemt konsentrasjon. Simulatorløsningen brukes ved periodisk kontroll av bevisinstrument for alkoholutåndingsprøver. Bevisinstrumentet som benyttes er av type Evidenzer Mobile 240.
    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:
    2017-03-27T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    no
    publicationDate:
    2017-03-27
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  6. id:
    2023-399429
    buyer:

    1 results

    1. id:
      62ed7a4eab708b7b199f26477cadb7a5
      organization_id:
      817920632
      name:
      Trøndelag fylkeskommune
    heading:
    Intensjonskunngjøring oppgradering skipssimulator
    description:
    Trøndelag Høyere Yrkesfagskole har til hensikt å anskaffe oppgradert maskinvare til vår skipssimulator levert fra Wärtsilä Voyage Limited i 2015/2016. Dette inkluderer nye datamaskiner til Wärtsilä's simulatorer for både navigasjon og maskinrom. Maskinvaren trenger oppgradering for å opprettholde oppetid og til å møte kravene til de nyeste programvarene. I tillegg innebærer oppgraderingen bytte av de aldrende storskjermene for bedre visualisering samt en oppgradering av datakraft for raskere opplasting. Trøndelag Høyere Yrkesfagskole har en intensjon om å signere kontrakt med Wärtsilä Voyage Limited i løpet av kort tid dersom ikke noen andre momenter dukker opp. En fungerende og dagsaktuell simulator er et krav for å utdanne våre studenter til skipsoffiserer. Eventuelle innsigelser til inngåelse av kontrakt må være levert senest 30.09.2023 kl. 23.59.
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_INTENT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_INTENT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2023-09-18T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2023-09-18
    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:
    2026-101611
    buyer:

    1 results

    1. id:
      c882ebae51fdf3173bdfcbdeca10c48f
      organization_id:
      974761157
      name:
      Politiets fellestjenester
    heading:
    Simulatorløsning
    description:
    Anskaffelsen skal dekke oppdragsgivers behov for simulatorløsning til bevisinstrument Evidenzer Mobile 240. Avtalen skal gjelde for Politi- og lensmannsetaten. For nærmere informasjon se konkurransegrunnlaget i sin helhet.
    location_id:

    1 results

    1. NO020
    estimatedValue:
    currencyCode:
    NOK
    amount:
    12600000.0
    type:
    ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2026-01-21T11:01:02Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2026-01-22
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  2. id:
    2025-112264
    buyer:

    1 results

    1. id:
      c882ebae51fdf3173bdfcbdeca10c48f
      organization_id:
      974761157
      name:
      Politiets fellestjenester
    heading:
    Simulatorløsning
    description:
    Anskaffelsen skal dekke oppdragsgivers behov for simulatorløsning til bevisinstrument Evidenzer Mobile 240. Avtalen skal gjelde for Politi- og lensmannsetaten. For nærmere informasjon se konkurransegrunnlaget i sin helhet.
    location_id:

    1 results

    1. NO020
    estimatedValue:
    currencyCode:
    NOK
    amount:
    12600000.0
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. COMPETITION
    2. ANNOUNCEMENT_OF_COMPETITION
    status:
    AWARDED
    issueDate:
    2025-08-25T11:42:12Z
    deadline:
    2025-10-29T11:00:00Z
    sentToTed:
    yes
    publicationDate:
    2025-08-27
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  3. id:
    2022-387008
    buyer:

    1 results

    1. id:
      c882ebae51fdf3173bdfcbdeca10c48f
      organization_id:
      974 761 157
      name:
      Politiets Fellestjenester
    heading:
    Simulatorløsning
    description:
    Formålet med anskaffelsen er å inngå rammeavtale for leveranse av simulatorløsning. Med simulatorløsning menes en løsning av etanol i vann med en bestemt konsentrasjon. Produktet benyttes ved periodisk kontroll av bevisinstrument for alkoholutåndingsprøver. Bevisinstrumentet som benyttes er av type Evidenzer Mobile 240.
    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:
    2022-02-23T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2022-02-23
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  4. id:
    2021-371917
    buyer:

    1 results

    1. id:
      c882ebae51fdf3173bdfcbdeca10c48f
      organization_id:
      974 761 157
      name:
      Politiets fellestjenester
    heading:
    Simulatorløsning
    description:
    Formålet med anskaffelsen er å inngå rammeavtale for leveranse av simulatorløsning. Med simulatorløsning menes en løsning av etanol i vann med en bestemt konsentrasjon. Produktet benyttes ved periodisk kontroll av bevisinstrument for alkoholutåndingsprøver. Bevisinstrumentet som benyttes er av type Evidenzer Mobile 240.
    location_id:

    No results.

    estimatedValue:
    currencyCode:
    NOK
    amount:
    1200000.0
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. COMPETITION
    2. ANNOUNCEMENT_OF_COMPETITION
    status:
    EXPIRED
    issueDate:
    2021-11-30T10:00:00Z
    deadline:
    2022-01-07T10:00:00Z
    sentToTed:
    yes
    publicationDate:
    2021-11-30
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2017-068999
    buyer:

    1 results

    1. id:
      c882ebae51fdf3173bdfcbdeca10c48f
      organization_id:
      974 761 157
      name:
      Politiets fellestjenester
    heading:
    Simulatorløsning
    description:
    Formålet med anskaffelsen er å inngå rammeavtale for leveranse av simulatorløsning (kalibreringsvæske). Med simulatorløsning menes en løsning av etanol i vann med en bestemt konsentrasjon. Simulatorløsningen brukes ved periodisk kontroll av bevisinstrument for alkoholutåndingsprøver. Bevisinstrumentet som benyttes er av type Evidenzer Mobile 240.
    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:
    2017-03-27T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    no
    publicationDate:
    2017-03-27
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  6. id:
    2023-399429
    buyer:

    1 results

    1. id:
      62ed7a4eab708b7b199f26477cadb7a5
      organization_id:
      817920632
      name:
      Trøndelag fylkeskommune
    heading:
    Intensjonskunngjøring oppgradering skipssimulator
    description:
    Trøndelag Høyere Yrkesfagskole har til hensikt å anskaffe oppgradert maskinvare til vår skipssimulator levert fra Wärtsilä Voyage Limited i 2015/2016. Dette inkluderer nye datamaskiner til Wärtsilä's simulatorer for både navigasjon og maskinrom. Maskinvaren trenger oppgradering for å opprettholde oppetid og til å møte kravene til de nyeste programvarene. I tillegg innebærer oppgraderingen bytte av de aldrende storskjermene for bedre visualisering samt en oppgradering av datakraft for raskere opplasting. Trøndelag Høyere Yrkesfagskole har en intensjon om å signere kontrakt med Wärtsilä Voyage Limited i løpet av kort tid dersom ikke noen andre momenter dukker opp. En fungerende og dagsaktuell simulator er et krav for å utdanne våre studenter til skipsoffiserer. Eventuelle innsigelser til inngåelse av kontrakt må være levert senest 30.09.2023 kl. 23.59.
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_INTENT
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_INTENT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2023-09-18T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2023-09-18
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

limit:
25
offset:
0
returned:
6
has_more_results:
no
truncated:
no
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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.