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Where the information came from. Everything here is assembled from material a member of the public can reach with a browser and no credentials — the company's own website, developer portal and documentation, the specifications it publishes for public use (OpenAPI, AsyncAPI, JSON Schema,
apis.json,llms.txtand similar), its public repositories, and its public status, pricing and changelog pages. Nothing here is obtained by breaching a system, defeating an access control, or using credentials of any kind.The rating is an independent assessment. The Kin Score and Agent Readiness rating are independently calculated scores of a company's public API artifacts, produced by API Evangelist against a published rubric. They are not certifications, endorsements, security assessments, or audits, and they score published artifacts — not the quality, safety, or security of the software.
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Full detail: Where this data comes from
Sunbit is a Los Angeles based financial technology company providing point-of-sale buy now, pay-over-time financing for everyday needs — auto service and dealerships, dental, eyewear, veterinary, med spa, home services and general retail. Merchants and SaaS platforms integrate through a partner REST API and a hosted JavaScript SDK.
- Website — https://sunbit.com/
- Developer docs — https://docs.sunbit.com/docs/overview/overview
- Developers portal — https://developers.sunbit.com/
- Status — https://status.sunbit.com/
- Integration partners — https://sunbit.com/integration-partners/
| Host | Environment |
|---|---|
https://api.sunbit.com |
production |
https://api-sandbox.sunbit.com |
sandbox |
Authentication is a sunbit-key / sunbit-secret header pair, with IP allowlisting on
checkout initialization and the customer-offer-history report. There is no OAuth, no OIDC and
no scope model.
Fourteen documented operations across six services — purchase (pre-qualification,
estimation), epay (checkout, text-to-pay, lookup, void, refund), onboarding (merchant
locations), reports, alliance (Payment Path auth) and developers-portal-service
(embedded dashboard) — plus 20 webhook event types signed with HMAC-SHA256.
Sunbit publishes no machine-readable contract. No OpenAPI, Swagger, GraphQL, AsyncAPI, gRPC/proto, MCP server or A2A agent card was found on any of the eight Sunbit hosts probed. Every artifact in this repository is therefore transcribed or derived from Sunbit's published prose documentation, with the source URL recorded on each entry.
| Path | What it holds |
|---|---|
authentication/ |
credential schemes, bearer variants, IP allowlisting, credential issuance |
conventions/ |
pagination, versioning, error envelopes, sentinel values, rate limiting, idempotency (absent) |
errors/ |
44 documented errors across 12 operations |
asyncapi/ |
the 20-event webhook catalog and signature scheme (no AsyncAPI is published) |
sandbox/ |
sandbox hosts, SDK modes, transactionId simulation prefixes, demo test values |
data-model/ |
entities and relationships derived from the documented field tables |
components/ |
the hosted browser SDK surface |
packages/ |
client library inventory across eight registries |
lifecycle/ |
versioning, deprecation notices, status page, availability constraints |
conformance/ |
34 standards assertions with evidence |
security/ |
domain security probe, vulnerability disclosure |
well-known/ |
/.well-known probe results across all eight hosts |
skills/ |
five packaged agent skills for the marquee flows |
llms/ |
generated llms.txt |