Daivin
DAIVIN! is a deep-tech hardware company (Y Combinator Winter 2026, based in San Francisco and Finland) building tankless diving technology. Its core product, SPRING, is marketed as the "world's first tankless diving technology": instead of carrying heavy pressurized oxygen tanks, a diver wears a lightweight vest of electrolyzers and a battery belt that use electricity to split water on demand into breathable oxygen (O2) and hydrogen (H2), targeting depths up to 200 meters / 650 ft. Founder Leo Kankkunen frames breathing as "fundamentally an energy problem," and the company envisions applications beyond recreational and professional diving across space exploration, high-altitude rescue, hospitals, and aircraft. Added to the API Evangelist network as a venture-capital portfolio lead surfaced via y-combinator. Daivin runs a conceptual marketing website (Wix) and a news blog; it publishes no public API, developer portal, SDK, or other machine-readable developer surface, so no API artifacts apply to this provider.
Index entry only — little beyond a description and a link, and nothing machine-readable enough for an agent to act on without a human reading the site first.
API Evangelist profiles Daivin the way a machine reads it — 1 machine-readable artifact, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Daivin scores 7.2/100 (minimal), with a separate agent-readiness read of 0/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Daivin
Each block below is one kind of artifact we hold for Daivin. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
Security Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Daivin — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Access & Security 1
Authentication, authorization, and security posture
Learn 1
Tutorials, courses, talks, and written guidance
Company 4
The organization behind the API
← All providers · Data indexed from github.com/api-evangelist/daivin · machine-readable index on apis.io