Convex

Convex Group Limited is an international specialty insurer and reinsurer founded in 2019 by Stephen Catlin and Paul Brand, headquartered in London with operations in Bermuda, Luxembourg, Guernsey and the United States. Convex writes complex commercial and specialty risk across property, casualty, marine, energy, aviation, cyber, political risk and credit, crisis management, accident and health, and equine/livestock/aquaculture, and writes property, casualty and specialty treaty reinsurance through Convex Re Limited in Bermuda and London. Convex Insurance UK Limited is authorised by the Prudential Regulation Authority and regulated by the FCA and PRA; it is a London company-market carrier rather than a Lloyd's syndicate, and it reported roughly $5.2bn of gross written premium in 2024. Convex operates a named Digital Underwriting function that publicly describes building "a suite of insurance specific APIs" for automated quote and bind on high-volume, low-complexity specialty books, delivered either through a Convex-hosted broker portal or by connecting Convex products into a broker's or client's existing portal via API. That API programme is real but entirely partner-gated: as of 2026-07-25 Convex publishes no public developer portal, no API reference, no OpenAPI or other machine- readable definition, no sandbox and no self-serve signup. The api.convexin.com host is live but answers every anonymous request with HTTP 401 Unauthorized, the digital.convexin.com broker application is an authenticated Unqork-hosted portal, and the Convex Quick Quote event-insurance surface is behind a broker account registration form. Integration is arranged through the Business Development team, not through documentation. No ACORD, AL3, NGDS or IVANS reference appears anywhere on Convex's public web presence.

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.

How we profile Convex

Each block below is one kind of artifact we hold for Convex. 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.

APIs 1

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

Individual APIs this provider publishes, each with its own machine-readable definition.

Convex Digital Underwriting API

The partner-gated REST API surface behind Convex Digital Underwriting. Convex publicly describes building "a suite of insurance specific APIs" that let broker and client platfor...

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.

Convex Insurance Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Every other property we hold for Convex — 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.

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