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 2026-10-29T12:11:21Z in 0.177 seconds.

total_count:
5
hits:

5 results

  1. id:
    2019-393645
    buyer:

    1 results

    1. id:
      1172c118d3c0d86c04061c211258f772
      organization_id:
      985 198 292
      name:
      Avinor AS
    heading:
    Enveissluser / One-way corridors
    description:
    Background Avinor will procure one-way corridors to ensure transition points from security-controlled areas to landside / airside, etc. The agreements will apply throughout Avinor AS, and Svalbard lufthavn AS, and be part of the standardization of the equipment at all the airports. The agreements will be used to change old one-way corridors, as well as new projects that will come in the future It is Avinors intention to enter into long time frame agreements of until eight (8) years for the scope of supply. Scope of supply The procurement will be for frame agreement for: • One-way corridors • One-way doors • Return-barriers • SBG /SBK (self boarding gate) The delivery includes installation of the locks, as well as an option for maintenance / service, etc. One-way corridors in Norway today: 96 SBG in Norway today: 341 New projects will come in addition to these numbers.
    location_id:

    1 results

    1. NO0
    estimatedValue:
    not reported by source
    type:
    ADVISORY_NOTICE
    allTypes:

    2 results

    1. PLANNING
    2. ADVISORY_NOTICE
    status:
    not reported by source
    issueDate:
    2019-02-25T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2019-02-25
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  2. id:
    2023-688018
    buyer:

    1 results

    1. id:
      8258994a1c9a2c9b60041b1ad1b5b115
      organization_id:
      994598759
      name:
      Norsk Helsenett SF
    heading:
    RFI - Molecular test for detection and/or quantification of hepatitis virus A, B, C, D and E
    description:
    The Norwegian Institute of Public Health (NIPH) plan to acquire molecular test for detection and/or quantification of hepatitis virus (A, B, C, D and E) certified in according to the new EU IVDR regulations that will apply from May 2025 (class D). The virology department at the Norwegian Institute of Public Health is reference laboratory for hepatitis virus in Norway, and hence offer primary, confirmational or supplementary analysis primarily to the microbial laboratories around Norway. The number of samples are generally low compared to the primary microbial laboratories, and varies over time, depending on the demand and ongoing projects. There is therefore a need for a small and flexible system, preferably with automated extraction. In this regard we would like to have information of test that are or will soon be available on the marked, as well as their specifications. This is in preparation for a tender.
    location_id:

    1 results

    1. NO08
    estimatedValue:
    currencyCode:
    NOK
    amount:
    1000000.0
    type:
    ADVISORY_NOTICE
    allTypes:

    2 results

    1. PLANNING
    2. ADVISORY_NOTICE
    status:
    not reported by source
    issueDate:
    2023-03-28T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2023-03-28
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  3. id:
    2023-687599
    buyer:

    1 results

    1. id:
      a17f0c4d9b21ae6f264d342bcf640d49
      organization_id:
      985 198 292
      name:
      AVINOR AS
    heading:
    Avinor AS - K-191255 - Common Use Passenger Processing platforms and services
    description:
    Avinor is currently operating Common Use systems at several airports in Norway. For CUPPS there are currently 15 airports using the platform, For CUSS there are currently 16 airports using the kiosks, For BRS there are currently 43 airports using the BRS System. These are all airports currently under Avinor operations. The existing framework agreement Avinor has, is coming to an end on 31st may 2024, and a new agreement needs to be established. The new agreement will apply to Avinor AS, and all subsidiaries shall be able to make use of the agreement. In the new agreement, Avinor is considering the following deliveries: See the attached document "K-191255 Avinor general needs description - Common Use" for more information.
    location_id:

    1 results

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

    2 results

    1. CANCELLED_OR_MISSING_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2023-10-19T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2023-10-19
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  4. id:
    2023-626160
    buyer:

    1 results

    1. id:
      a17f0c4d9b21ae6f264d342bcf640d49
      organization_id:
      985 198 292
      name:
      AVINOR AS
    heading:
    Avinor AS - K-191255 - Common Use Passenger Processing platforms and services
    description:
    Avinor is currently operating Common Use systems at several airports in Norway. For CUPPS there are currently 15 airports using the platform, For CUSS there are currently 16 airports using the kiosks, For BRS there are currently 43 airports using the BRS System. These are all airports currently under Avinor operations. The existing framework agreement Avinor has, is coming to an end on 31st may 2024, and a new agreement needs to be established. The new agreement will apply to Avinor AS, and all subsidiaries shall be able to make use of the agreement. In the new agreement, Avinor is considering the following deliveries: See the attached document "K-191255 Avinor general needs description - Common Use" for more information.
    location_id:

    1 results

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

    2 results

    1. COMPETITION
    2. ANNOUNCEMENT_OF_COMPETITION
    status:
    EXPIRED
    issueDate:
    2023-02-07T10:00:00Z
    deadline:
    2023-03-08T10:00:00Z
    sentToTed:
    yes
    publicationDate:
    2023-02-07
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2024-105920
    buyer:

    1 results

    1. id:
      1ec60ce623cbaa2b243d1ce55863be9e
      organization_id:
      874783242
      name:
      KYSTVERKET
    heading:
    Application for participation in Work Package 4 - IMAROS 2 project
    description:
    Objective Work Package 4 (WP4) in IMAROS 2 projectIn the first IMAROS project, we documented limited and poor performance of several oil skimmers when used on the new Low sulphur fuel oils. To explore potential solutions, manufacturers of oil-recovery equipment are invited to participate in basin testing their products as part of WP4 in the IMAROS 2 project.Interested companies can apply to participate in the trials in Norway and Finland.Purpose and objective of WP4:Involve mechanical recovery equipment manufacturers in order to promote development or modification of existing equipment.To collaborate with oil-recovery equipment manufacturers to explore potential solutions for developing effective oil-recovery equipment suitable for low-sulphur fuel oils.To give recommendations to the applicability of different mechanical recovery systems based on the challenging low-sulphur fuel oils gives.�To identify promising technologies and possible modifications on existing equipment.For more information on the IMAROS 2 pleas refere to the IMAROS web page https://civil-protection-knowledge-network.europa.eu/projects/imaros-2
    location_id:

    3 results

    1. NO094
    2. NO093
    3. NO091
    estimatedValue:
    currencyCode:
    NOK
    amount:
    1500000.0
    type:
    ADVISORY_NOTICE
    allTypes:

    2 results

    1. PLANNING
    2. ADVISORY_NOTICE
    status:
    not reported by source
    issueDate:
    2024-04-22T13:44:28Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2024-04-24
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

limit:
25
offset:
0
returned:
5
has_more_results:
no
Show all fields in HTML
total_count:
5
hits:

5 results

  1. id:
    2019-393645
    buyer:

    1 results

    1. id:
      1172c118d3c0d86c04061c211258f772
      organization_id:
      985 198 292
      name:
      Avinor AS
    heading:
    Enveissluser / One-way corridors
    description:
    Background Avinor will procure one-way corridors to ensure transition points from security-controlled areas to landside / airside, etc. The agreements will apply throughout Avinor AS, and Svalbard lufthavn AS, and be part of the standardization of the equipment at all the airports. The agreements will be used to change old one-way corridors, as well as new projects that will come in the future It is Avinors intention to enter into long time frame agreements of until eight (8) years for the scope of supply. Scope of supply The procurement will be for frame agreement for: • One-way corridors • One-way doors • Return-barriers • SBG /SBK (self boarding gate) The delivery includes installation of the locks, as well as an option for maintenance / service, etc. One-way corridors in Norway today: 96 SBG in Norway today: 341 New projects will come in addition to these numbers.
    location_id:

    1 results

    1. NO0
    estimatedValue:
    not reported by source
    type:
    ADVISORY_NOTICE
    allTypes:

    2 results

    1. PLANNING
    2. ADVISORY_NOTICE
    status:
    not reported by source
    issueDate:
    2019-02-25T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2019-02-25
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  2. id:
    2023-688018
    buyer:

    1 results

    1. id:
      8258994a1c9a2c9b60041b1ad1b5b115
      organization_id:
      994598759
      name:
      Norsk Helsenett SF
    heading:
    RFI - Molecular test for detection and/or quantification of hepatitis virus A, B, C, D and E
    description:
    The Norwegian Institute of Public Health (NIPH) plan to acquire molecular test for detection and/or quantification of hepatitis virus (A, B, C, D and E) certified in according to the new EU IVDR regulations that will apply from May 2025 (class D). The virology department at the Norwegian Institute of Public Health is reference laboratory for hepatitis virus in Norway, and hence offer primary, confirmational or supplementary analysis primarily to the microbial laboratories around Norway. The number of samples are generally low compared to the primary microbial laboratories, and varies over time, depending on the demand and ongoing projects. There is therefore a need for a small and flexible system, preferably with automated extraction. In this regard we would like to have information of test that are or will soon be available on the marked, as well as their specifications. This is in preparation for a tender.
    location_id:

    1 results

    1. NO08
    estimatedValue:
    currencyCode:
    NOK
    amount:
    1000000.0
    type:
    ADVISORY_NOTICE
    allTypes:

    2 results

    1. PLANNING
    2. ADVISORY_NOTICE
    status:
    not reported by source
    issueDate:
    2023-03-28T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2023-03-28
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  3. id:
    2023-687599
    buyer:

    1 results

    1. id:
      a17f0c4d9b21ae6f264d342bcf640d49
      organization_id:
      985 198 292
      name:
      AVINOR AS
    heading:
    Avinor AS - K-191255 - Common Use Passenger Processing platforms and services
    description:
    Avinor is currently operating Common Use systems at several airports in Norway. For CUPPS there are currently 15 airports using the platform, For CUSS there are currently 16 airports using the kiosks, For BRS there are currently 43 airports using the BRS System. These are all airports currently under Avinor operations. The existing framework agreement Avinor has, is coming to an end on 31st may 2024, and a new agreement needs to be established. The new agreement will apply to Avinor AS, and all subsidiaries shall be able to make use of the agreement. In the new agreement, Avinor is considering the following deliveries: See the attached document "K-191255 Avinor general needs description - Common Use" for more information.
    location_id:

    1 results

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

    2 results

    1. CANCELLED_OR_MISSING_CONCLUSION_OF_CONTRACT
    2. RESULT
    status:
    not reported by source
    issueDate:
    2023-10-19T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2023-10-19
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  4. id:
    2023-626160
    buyer:

    1 results

    1. id:
      a17f0c4d9b21ae6f264d342bcf640d49
      organization_id:
      985 198 292
      name:
      AVINOR AS
    heading:
    Avinor AS - K-191255 - Common Use Passenger Processing platforms and services
    description:
    Avinor is currently operating Common Use systems at several airports in Norway. For CUPPS there are currently 15 airports using the platform, For CUSS there are currently 16 airports using the kiosks, For BRS there are currently 43 airports using the BRS System. These are all airports currently under Avinor operations. The existing framework agreement Avinor has, is coming to an end on 31st may 2024, and a new agreement needs to be established. The new agreement will apply to Avinor AS, and all subsidiaries shall be able to make use of the agreement. In the new agreement, Avinor is considering the following deliveries: See the attached document "K-191255 Avinor general needs description - Common Use" for more information.
    location_id:

    1 results

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

    2 results

    1. COMPETITION
    2. ANNOUNCEMENT_OF_COMPETITION
    status:
    EXPIRED
    issueDate:
    2023-02-07T10:00:00Z
    deadline:
    2023-03-08T10:00:00Z
    sentToTed:
    yes
    publicationDate:
    2023-02-07
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2024-105920
    buyer:

    1 results

    1. id:
      1ec60ce623cbaa2b243d1ce55863be9e
      organization_id:
      874783242
      name:
      KYSTVERKET
    heading:
    Application for participation in Work Package 4 - IMAROS 2 project
    description:
    Objective Work Package 4 (WP4) in IMAROS 2 projectIn the first IMAROS project, we documented limited and poor performance of several oil skimmers when used on the new Low sulphur fuel oils. To explore potential solutions, manufacturers of oil-recovery equipment are invited to participate in basin testing their products as part of WP4 in the IMAROS 2 project.Interested companies can apply to participate in the trials in Norway and Finland.Purpose and objective of WP4:Involve mechanical recovery equipment manufacturers in order to promote development or modification of existing equipment.To collaborate with oil-recovery equipment manufacturers to explore potential solutions for developing effective oil-recovery equipment suitable for low-sulphur fuel oils.To give recommendations to the applicability of different mechanical recovery systems based on the challenging low-sulphur fuel oils gives.�To identify promising technologies and possible modifications on existing equipment.For more information on the IMAROS 2 pleas refere to the IMAROS web page https://civil-protection-knowledge-network.europa.eu/projects/imaros-2
    location_id:

    3 results

    1. NO094
    2. NO093
    3. NO091
    estimatedValue:
    currencyCode:
    NOK
    amount:
    1500000.0
    type:
    ADVISORY_NOTICE
    allTypes:

    2 results

    1. PLANNING
    2. ADVISORY_NOTICE
    status:
    not reported by source
    issueDate:
    2024-04-22T13:44:28Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2024-04-24
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

limit:
25
offset:
0
returned:
5
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.