API Protocol Guide

RESTful API + OpenAPI 3.0 spec

• Request type: {HttpMethod}{Name}Params (e.g., GetUserParams, ListUsersParams)
• Response type: {HttpMethod}{Name}Result (e.g., GetUserResult, ListUsersResult)

HTTP Method Rules

• GET + singular → single item (e.g., GET /sunreis/{id})
• List + plural → list items (e.g., GET /sunreis)
• POST → create
• PUT → full update
• PATCH → partial update
• DELETE → delete

Response Format

• Success: { "data": ... } or domain key (e.g., { "sunreis": [...] })
• Error: { "error": { "code": "...", "message": "..." } }
• Pagination: { "items": [...], "nextToken": "..." }