Building with APIs
Integrate OpenAI, Anthropic, and open models in production.
12·Free resources
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- Docs25 min
OpenAI - Quickstart (Node & Python)
API keys, chat completions, and streaming basics.
Open resource - Docs20 min
Anthropic - First API request
Messages API shape, system prompts, and tool use hooks.
Open resource - Article15 min
Simon Willison - llm CLI tool
CLI for trying models and piping JSON in shell workflows.
Open resource - Docs35 min
Vercel AI SDK - Getting started
Streaming UI hooks and provider-agnostic model calls in Next.js.
Open resource 
Video8 minFireship - REST APIs in 100 seconds
Fast refresher on HTTP verbs and JSON if you are rusty.
Open resource- Article18 min
Stripe-style idempotency for LLM calls
Why retries need idempotency keys for paid API usage.
Open resource - Docs12 min
OpenAI - Rate limits and usage tiers
Throughput planning and backoff strategies.
Open resource - Article15 min
Martin Fowler - Circuit breaker pattern
Resilience when upstream LLM APIs fail or slow down.
Open resource - Docs28 min
Hugging Face - Inference Endpoints
Self-hosted open models behind a simple HTTPS API.
Open resource - Article30 min
OWASP - LLM Top 10 for API-backed apps
Threat model checklist when exposing LLMs to users.
Open resource