Kit API-Design

Company API style guide: naming, methods, status codes, RFC 9457 errors, pagination, versioning, security, webhooks, governance

API lifecycle policy: versioning scheme, compatibility promises, breaking changes, timelines, Deprecation and Sunset headers

HTTP/JSON API contract: auth, conventions, QUERY, streaming, pagination, RFC 9457 errors, endpoints, webhooks, OpenAPI 3.2 skeleton

Async event contract: brokers, channels, operations, CloudEvents envelope, ordering, delivery, DLQ, schema evolution, AsyncAPI YAML

GraphQL API spec: types, queries, mutations, subscriptions, connections, nullability, errors, auth, cost limits, federation

gRPC service spec: .proto contract, package versioning, field compatibility, google.rpc errors, deadlines, retries, streaming

ICD between two systems – parties, requirements allocation, data element table, protocol sequence, errors, security, timing, change control

One REST endpoint: auth, parameter tables, request example, responses per status, RFC 9457 errors, limits, idempotency, paging

API landing page – what it does, base URLs, auth in 3 steps, first request, key resources, errors, limits, next steps

Developer guide – setup, auth, multi-language quick start, errors, pagination, rate limits, webhooks, sandbox, versioning