An API to Get All Events a Given Company Participated In
An api to get all events a given company participated in must distinguish the participation it can document from activity it cannot observe. Evaluate company identity, event editions, roles and provenance, and require the application to describe returned results as available records rather than a complete history of everywhere the company attended.
The word “all” hides the hardest part of the requirement. It can mean every matching record available from the provider, or every participation that happened in the world. Put the answer inside an AI assistant and that distinction can disappear into a confident sentence unless your integration preserves it.
What is the company-first question?
A company-first lookup begins with an identified business and asks which event relationships are recorded for it. An event-first lookup begins with an edition and asks which companies are associated with it. Do not assume that an API designed for one direction automatically supports the other.
Write an acceptance question your application can test: given a resolved company identity, can it retrieve the relevant recorded editions and participation roles? Then specify the evidence the user needs to understand each result.
Confirm the actual interface, available fields and access terms through the WHR partner offering.
How should you resolve the company identity?
Supply the domain and company context where available. Ask how the provider handles aliases, subsidiaries, renamed businesses and ambiguous matches. A successful request is not useful if it returns the history of the wrong entity.
Keep the submitted identity separate from the resolved identity in your evaluation. That allows you to inspect a match instead of trusting a normalised name without explanation. Ask what happens when the provider cannot resolve the input confidently.
Large enterprises require particular care. A parent brand does not identify the relevant division. If the available record names only the parent, your interface should not silently attribute the role to a particular unit or product team.
What must each participation result explain?
A useful result needs enough information to identify the company, the event edition and the role being recorded. Ask how a reader can inspect the basis of that relationship and understand any uncertainty.
The distinction between an event and an edition is essential. A recurring event name cannot explain which occurrence the company was associated with. The same applies to roles: exhibiting, sponsoring and speaking should remain interpretable rather than becoming an undifferentiated attendance field.
Keep occurrence dates separate from observation or delivery dates. A newly supplied record about a past edition is not new activity by the company. If your application sends alerts or builds a timeline, that difference changes the meaning of the result.
How should missing records appear?
An empty result can follow an unresolved identity, a query outside the agreed scope or a lack of available participation evidence. Ask how your integration can distinguish those conditions instead of displaying a single unexplained blank.
Our article on the meaning of no participation record explains the central boundary. Absence from the available record does not establish that a company did not participate.
Preserve that boundary in interface language. “No recorded participation available for this query” describes the result. “This company has never attended an event” makes a claim the result cannot support. The distinction should survive exports as well as the main display.
What changes when an AI agent calls the API?
The November 2025 Model Context Protocol specification describes structured tool results and optional output schemas that clients can validate. In plain language, an assistant can receive named fields with defined types, rather than having to interpret a paragraph. That makes the meaning of each returned field part of the integration's quality.
For a participation lookup, test whether your application can preserve company identity, edition, role and evidence when it turns results into an answer.
Use a proposed acceptance test: ask the assistant for a company's history, then inspect what happens when the query has an unresolved company match, an empty result or a failed request. Those situations should produce different explanations. A failed request must not become “the company has no event history”.
Also check a company with exhibiting and sponsorship roles at the same edition. The answer should preserve both roles without inventing two event appearances. Valid formatting helps software handle a result; it cannot establish that the underlying company match is correct.
What does a responsible product promise look like?
Promise access to the records your arrangement actually provides. Describe their scope and preserve the difference between observed participation and complete attendance. Do not let “all available results” become “all events in the world” as the data moves into product copy.
WHR focuses on company participation records, kept current. Where an organiser publishes an attendee list, WHR includes it; no provider has attendee lists for every event. Discuss the companies, editions, roles and intended application you need before assuming a particular delivery or access arrangement.
The integration succeeds when a user can understand both a result and its limits. That is a stronger foundation for a company-history feature than a universal claim that cannot be established from published participation evidence.
What else do buyers ask?
Is there a data provider that shows which trade shows a company exhibits at?
WHR's participation-data offering is relevant to that company-first question. Confirm that the relevant identities, editions and exhibiting records are available for your intended use.
What should a company event history include?
A useful history keeps event editions, roles and evidence distinct. Describe it as recorded participation unless you can substantiate a broader claim.
How can my platform show each customer every event they attended?
Begin by defining which recorded company roles the platform can display and what the customer identity represents. Participation evidence cannot establish every employee's attendance or a complete history of unrecorded visits.
Explore WHR's participation data at whr.ai/api.