Attendease (now EventUp Planner, following its acquisition by Tripleseat) is an event and meeting management platform for planning, promoting, and running virtual, in-person, and hybrid events such as conferences, webinars, roadshows, and product launches. Attendease exposes a public developer API in two tiers: an Event API scoped to a single event subdomain (attendee tokens, sessions, presenters, surveys, sponsors, rooms, venues, and content) and an Organization API (`/api/v2/`) that spans business units, events, members, attendees, session attendance, check-ins, partners, and contact lists. The Organization API is authenticated with HMAC-SHA1 request signing (`Authorization: APIAuth access_key:signature`) while the Event API uses attendee/event tokens and HTTP Basic auth. First-party JavaScript and Ruby SDKs plus a Jekyll plugin are published to npm and RubyGems.
Attendease is listed with 2 APIs on the APIs.io network. Tagged areas include Company, Event, Event Management, Event Marketing, and Conferences.
Attendease’s developer surface includes documentation, API reference, signup flow, support, engineering blog, authentication, pricing, and 25 more developer resources.
Regulatory Posture applies to this provider. Its tags matched the
Horizontal (data, software, accessibility, platform) regime, so
Regulatory Posture carries 15 points of the composite.
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applicability map is public and we will correct it.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for
this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero:
never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and
several others — scorable at all.
The six quality facets above are damped to 85 points between them,
because the conditional facet above carries the other
15. That is why each facet's contribution is shown against a damped
maximum: raising a quality facet moves the composite by 85% of its nominal
weight, not 100%. The full arithmetic is at apis.io/rating/.
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Agent readiness — checks not met, largest first (exact, from this profile):
Idempotency+9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card+8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples+7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
9 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
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its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted:
not part of the Kin Score or agent readiness.
Registered MCP server and declares compatibility are report only — not weighted.
Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Event-scoped REST API bound to a single event subdomain covering event properties, sessions and session instances, presenters, surveys, sponsors, rooms, venues, filters, and con...
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