Design APIs
by talking them through.
An AI that asks about your use case, your consumers, and your scale — then helps you draft resource models, endpoints, OpenAPI specs, and error contracts. Like pair-designing with someone who's read every API style guide.
Three conversations. One solid API.
You describe what you're building. API Architect asks the right questions, then drafts specs you can actually use.
Describe Your Domain
Tell the AI what you're building — an e-commerce API, a booking system, an IoT data pipeline. It'll ask about your consumers, expected load, and what already exists.
Draft the Architecture
API Architect proposes resource models, endpoint structures, naming conventions, and pagination strategies. You refine together — iterate until the design fits.
Get Concrete Output
Walk away with OpenAPI 3.x YAML, GraphQL type definitions, error response schemas, auth flow documentation, and versioning plans — all generated in the conversation.
openapi: 3.1.0
info:
title: ProjectHub API
version: 2.0.0
paths:
/workspaces/{wid}/projects:
get:
summary: List projects
parameters:
- $ref: '#/.../cursor'
What you can ask about
These are real topics API Architect handles well. It's an AI — it won't always be perfect — but it's deeply tuned for API design conversations.
Resource Modeling
Nouns, relationships, sub-resources, and when to flatten vs. nest. Discuss your domain and get a clean resource hierarchy.
OpenAPI 3.x Specs
Get valid YAML/JSON specs drafted in conversation. Paths, schemas, components, security schemes — ready to paste into your project.
GraphQL Schema Design
Types, queries, mutations, subscriptions, and resolver patterns. Discuss the N+1 problem, DataLoader, and federation strategies.
Error Handling Patterns
RFC 7807 problem details, consistent error envelopes, status code selection, and how to handle validation errors across your API.
Auth & Security Flows
OAuth2 grants, JWT claims, API key rotation, scopes vs. permissions, and where to put auth in your request chain.
Versioning & Evolution
URI versioning vs. headers, deprecation strategies, breaking change detection, and backward-compatible schema evolution.
Things people actually ask
"I have a booking API. Should I use PATCH or PUT for partial availability updates? And how do I handle concurrent booking conflicts?"
"Write me an OpenAPI 3.1 spec for a notification service with webhooks. I need POST to register callbacks and a retry mechanism documented."
"I'm torn between REST and GraphQL for a mobile app with complex nested data. The team is small. What should I consider?"
"Design a rate limiting strategy for a public API. I need different tiers: anonymous, authenticated free, and paid. Show me the headers too."
"Here's my current error response format [pasted JSON]. Can you review it against RFC 7807 and suggest improvements?"
What people have said after chatting
"I was designing an API for the first time and didn't know where to start. It asked me like ten questions about my use case before suggesting anything. That alone was worth it."
"Got a working OpenAPI spec for my side project's API in about 20 minutes of back-and-forth. Had to tweak a few things but the structure was solid."
"I asked about versioning strategies and it laid out the tradeoffs between URL versioning, header versioning, and content negotiation better than any blog post I'd read."
Frequently asked questions
Your next API deserves a second opinion.
Describe what you're building. Get resource models, endpoint specs, and honest design tradeoffs — all in conversation.
Meet API Architect →Chat-based AI on AURVEK. No install, no setup.