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 2026-09-12T04:14:53Z in 0.156 seconds.

total_count:
7
hits:

6 results

  1. id:
    2025-104200
    buyer:

    1 results

    1. id:
      ed5f322b992ae741c6c1808d48c2acb0
      organization_id:
      914807077
      name:
      A/S Norske Shell
    heading:
    Leveranse av Elektrisk personell for gjennomføring av kabelutskiftingsprosjek
    description:
    AS Norske Shell har til hensikt å forlenge eksisterende avtale med Elmo Teknikk AS for leveranse av Elektrisk personell for gjennomføring av kabelutskiftingsprosjektet på Nyhamna Gassanlegg. AS Norske Shell har vurdert at vilkårene for direkte anskaffelse er oppfylt. Dette følger av forsyningsforskriften § 9-3. «Vilkår for anskaffelser uten konkurranse», bokstav b. «konkurranse er umulig av tekniske årsaker» ved at:Personell involvert i oppdraget har opparbeidet koblingsmyndighet som er nødvendig for gjennomføring av oppdraget. Slik myndighet vil ta relativt lang tid å opparbeide slik at et ombytte vil ha vesentlig påvirkning på produktivitet.Personell involvert i oppdraget har tilgang til oppdragsgivers tekniske dokument system for uthenting av oppdrag samt oppdatering av tekniske data. Slik tilgang krever opplæring og kjennskap til både arbeidsprosesser og system og vil være kreve betydelig tid og ressurser ved et ombytte.Avtalen vil forlenges med 3 år fra 01.12.2025 til og med 30.11.2028.Dersom det er innsigelser til A/S Norske Shell sin intensjon om avtaleinngåelse med Elmo Teknikk AS, må beskjed om dette gis innen 10 dager etter utlysning av denne intensjonskunngjøring.
    location_id:

    1 results

    1. NO0A3
    estimatedValue:
    not reported by source
    type:
    CHANGE_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. RESULT
    2. CHANGE_OF_CONCLUSION_OF_CONTRACT
    status:
    not reported by source
    issueDate:
    2025-03-18T10:02:41Z
    deadline:
    2028-11-30T00:00:00Z
    sentToTed:
    yes
    publicationDate:
    2025-03-18
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  2. id:
    2022-978827
    buyer:

    1 results

    1. id:
      931faa095d11ea795b7f69188e47f6aa
      organization_id:
      992 100 400
      name:
      E&P INFORMATION MANAGEMENT ASSOCIATION (EPIM)
    heading:
    Magnet Joint Qualification System (Magnet JQS)
    description:
    Utlysning av pre-kvalifikasjonsordning for A/S Norske Shell og Equinor Energy AS. Utlysningen gjelder for de anskaffelser A/S Norske Shell og Equinor Energy AS foretar i sine roller som technical service providers for Gassco AS i Norge.
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_COMPETITION
    2. COMPETITION
    status:
    not reported by source
    issueDate:
    2022-10-14T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2022-10-14
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  3. id:
    2021-361850
    buyer:

    1 results

    1. id:
      8b5bd63cb0e43a8893d8e629f335ed78
      organization_id:
      956 685 818
      name:
      Norsk olje og gass
    heading:
    EPIM Joint Qualification System (EPIM JQS)
    description:
    Utlysning av pre-kvalifikasjonsordning for A/S Norske Shell og Equinor Energy AS. Utlysningen gjelder for de anskaffelser A/S Norske Shell og Equinor Energy AS foretar i sine roller som technical service providers for Gassco AS i Norge.
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_COMPETITION
    2. COMPETITION
    status:
    not reported by source
    issueDate:
    2021-10-23T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2021-10-23
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  4. id:
    2021-370166
    buyer:

    1 results

    1. id:
      8b5bd63cb0e43a8893d8e629f335ed78
      organization_id:
      956 685 818
      name:
      Norsk olje og gass
    heading:
    EPIM Joint Qualification System (EPIM JQS)
    description:
    Utlysning av pre-kvalifikasjonsordning for A/S Norske Shell og Equinor Energy AS. Utlysningen gjelder for de anskaffelser A/S Norske Shell og Equinor Energy AS foretar i sine roller som technical service providers for Gassco AS i Norge.
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_COMPETITION
    2. COMPETITION
    status:
    not reported by source
    issueDate:
    2021-03-22T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2021-03-22
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2020-354852
    buyer:

    1 results

    1. id:
      219524433ea0ecab726e288497f909ca
      organization_id:
      956685818
      name:
      The Norwegian Oil and Gas Association
    heading:
    EPIM Joint Qualification System (EPIM JQS)
    description:
    Utlysning av pre-kvalifikasjonsordning for A/S Norske Shell og Equinor Energy AS. Utlysningen gjelder for de anskaffelser A/S Norske Shell og Equinor Energy AS foretar i sine roller som technical service providers for Gassco AS i Norge.
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_COMPETITION
    2. COMPETITION
    status:
    not reported by source
    issueDate:
    2020-11-07T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2020-11-07
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  6. id:
    2023-646198
    buyer:

    1 results

    1. id:
      3fd93e7a758f4d7f35ff016de0b013ea
      organization_id:
      930 623 903
      name:
      Offshore Qualific AS
    heading:
    Magnet Joint Qualification System (Magnet JQS)
    description:
    not reported by source
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    QUALIFICATION_SCHEME
    allTypes:

    2 results

    1. QUALIFICATION_SCHEME
    2. COMPETITION
    status:
    not reported by source
    issueDate:
    2023-06-21T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2023-06-21
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

note:
Excluded 1 notice(s) with placeholder buyer data (unfilled eForm template). Pass include_placeholders=True to include them.
limit:
25
offset:
0
returned:
6
has_more_results:
yes
truncated:
yes
next_offset:
6
Show all fields in HTML
total_count:
7
hits:

6 results

  1. id:
    2025-104200
    buyer:

    1 results

    1. id:
      ed5f322b992ae741c6c1808d48c2acb0
      organization_id:
      914807077
      name:
      A/S Norske Shell
    heading:
    Leveranse av Elektrisk personell for gjennomføring av kabelutskiftingsprosjek
    description:
    AS Norske Shell har til hensikt å forlenge eksisterende avtale med Elmo Teknikk AS for leveranse av Elektrisk personell for gjennomføring av kabelutskiftingsprosjektet på Nyhamna Gassanlegg. AS Norske Shell har vurdert at vilkårene for direkte anskaffelse er oppfylt. Dette følger av forsyningsforskriften § 9-3. «Vilkår for anskaffelser uten konkurranse», bokstav b. «konkurranse er umulig av tekniske årsaker» ved at:Personell involvert i oppdraget har opparbeidet koblingsmyndighet som er nødvendig for gjennomføring av oppdraget. Slik myndighet vil ta relativt lang tid å opparbeide slik at et ombytte vil ha vesentlig påvirkning på produktivitet.Personell involvert i oppdraget har tilgang til oppdragsgivers tekniske dokument system for uthenting av oppdrag samt oppdatering av tekniske data. Slik tilgang krever opplæring og kjennskap til både arbeidsprosesser og system og vil være kreve betydelig tid og ressurser ved et ombytte.Avtalen vil forlenges med 3 år fra 01.12.2025 til og med 30.11.2028.Dersom det er innsigelser til A/S Norske Shell sin intensjon om avtaleinngåelse med Elmo Teknikk AS, må beskjed om dette gis innen 10 dager etter utlysning av denne intensjonskunngjøring.
    location_id:

    1 results

    1. NO0A3
    estimatedValue:
    not reported by source
    type:
    CHANGE_OF_CONCLUSION_OF_CONTRACT
    allTypes:

    2 results

    1. RESULT
    2. CHANGE_OF_CONCLUSION_OF_CONTRACT
    status:
    not reported by source
    issueDate:
    2025-03-18T10:02:41Z
    deadline:
    2028-11-30T00:00:00Z
    sentToTed:
    yes
    publicationDate:
    2025-03-18
    placeOfPerformance:
    procurementStrategicLabels:

    No results.

  2. id:
    2022-978827
    buyer:

    1 results

    1. id:
      931faa095d11ea795b7f69188e47f6aa
      organization_id:
      992 100 400
      name:
      E&P INFORMATION MANAGEMENT ASSOCIATION (EPIM)
    heading:
    Magnet Joint Qualification System (Magnet JQS)
    description:
    Utlysning av pre-kvalifikasjonsordning for A/S Norske Shell og Equinor Energy AS. Utlysningen gjelder for de anskaffelser A/S Norske Shell og Equinor Energy AS foretar i sine roller som technical service providers for Gassco AS i Norge.
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_COMPETITION
    2. COMPETITION
    status:
    not reported by source
    issueDate:
    2022-10-14T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2022-10-14
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  3. id:
    2021-361850
    buyer:

    1 results

    1. id:
      8b5bd63cb0e43a8893d8e629f335ed78
      organization_id:
      956 685 818
      name:
      Norsk olje og gass
    heading:
    EPIM Joint Qualification System (EPIM JQS)
    description:
    Utlysning av pre-kvalifikasjonsordning for A/S Norske Shell og Equinor Energy AS. Utlysningen gjelder for de anskaffelser A/S Norske Shell og Equinor Energy AS foretar i sine roller som technical service providers for Gassco AS i Norge.
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_COMPETITION
    2. COMPETITION
    status:
    not reported by source
    issueDate:
    2021-10-23T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2021-10-23
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  4. id:
    2021-370166
    buyer:

    1 results

    1. id:
      8b5bd63cb0e43a8893d8e629f335ed78
      organization_id:
      956 685 818
      name:
      Norsk olje og gass
    heading:
    EPIM Joint Qualification System (EPIM JQS)
    description:
    Utlysning av pre-kvalifikasjonsordning for A/S Norske Shell og Equinor Energy AS. Utlysningen gjelder for de anskaffelser A/S Norske Shell og Equinor Energy AS foretar i sine roller som technical service providers for Gassco AS i Norge.
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_COMPETITION
    2. COMPETITION
    status:
    not reported by source
    issueDate:
    2021-03-22T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2021-03-22
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  5. id:
    2020-354852
    buyer:

    1 results

    1. id:
      219524433ea0ecab726e288497f909ca
      organization_id:
      956685818
      name:
      The Norwegian Oil and Gas Association
    heading:
    EPIM Joint Qualification System (EPIM JQS)
    description:
    Utlysning av pre-kvalifikasjonsordning for A/S Norske Shell og Equinor Energy AS. Utlysningen gjelder for de anskaffelser A/S Norske Shell og Equinor Energy AS foretar i sine roller som technical service providers for Gassco AS i Norge.
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    ANNOUNCEMENT_OF_COMPETITION
    allTypes:

    2 results

    1. ANNOUNCEMENT_OF_COMPETITION
    2. COMPETITION
    status:
    not reported by source
    issueDate:
    2020-11-07T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2020-11-07
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

  6. id:
    2023-646198
    buyer:

    1 results

    1. id:
      3fd93e7a758f4d7f35ff016de0b013ea
      organization_id:
      930 623 903
      name:
      Offshore Qualific AS
    heading:
    Magnet Joint Qualification System (Magnet JQS)
    description:
    not reported by source
    location_id:

    No results.

    estimatedValue:
    not reported by source
    type:
    QUALIFICATION_SCHEME
    allTypes:

    2 results

    1. QUALIFICATION_SCHEME
    2. COMPETITION
    status:
    not reported by source
    issueDate:
    2023-06-21T10:00:00Z
    deadline:
    not reported by source
    sentToTed:
    yes
    publicationDate:
    2023-06-21
    placeOfPerformance:

    No results.

    procurementStrategicLabels:

    No results.

note:
Excluded 1 notice(s) with placeholder buyer data (unfilled eForm template). Pass include_placeholders=True to include them.
limit:
25
offset:
0
returned:
6
has_more_results:
yes
truncated:
yes
next_offset:
6
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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.