The request/response protocol that carries almost every API, page, and download on the modern internet — methods, status codes, headers, caching, and three wire formats (HTTP/1.1, HTTP/2, HTTP/3).
Text-based data interchange format derived from JavaScript object literals and standardised as RFC 8259 / ECMA-404.
The Anthropic Claude API — Python and TypeScript SDKs, streaming, tool use, batches, prompt caching, files, vision, and agentic loops.
The Anthropic Message Batches API — create, poll, retrieve, and stream results at 50% off list price for asynchronous bulk processing of thousands of Claude requests.
The Anthropic Files API — upload PDFs, images, and text once and reference them by `file_id` across multiple messages, with citations, lifecycle management, and Workbench integration.
Anthropic prompt caching — `cache_control`, 5-minute TTL, 1-hour beta, cache breakpoints, cost math, multi-turn caching patterns, and recipes for system prompts, tools, and documents.
Complete Python SDK reference for the Anthropic Claude API — messages, streaming, vision, extended thinking, prompt caching, batch processing, and token counting.
Streaming responses from the Anthropic API — server-sent events, event types, async iteration in Python and TypeScript, partial tool input, error handling, and retry strategies.
Define tools, handle tool calls, run agentic loops, use parallel tools, and manage errors with the Claude API.
Complete TypeScript SDK reference for the Anthropic Claude API — install, messages.create, streaming, tool use, vision, types, and Node/Deno/Bun integration.
Transfer data with URLs. Covers HTTP methods, headers, authentication, forms, TLS, cookies, proxies, timeouts, parallel downloads, and a comprehensive recipe collection.
Slice, filter, map, and transform JSON data from the command line. Covers all essential filters, built-in functions, select, map, reduce, streaming, jq 1.7/1.8 additions, and real-world API response processing.
Build high-performance async REST APIs with FastAPI. Covers path params, request bodies, Pydantic models, dependency injection, and auto-generated OpenAPI docs.
Build lightweight web apps and REST APIs with Flask. Covers routes, request handling, JSON responses, blueprints, and the debug-server warning.
Make sync and async HTTP requests with httpx. Covers GET/POST, async usage, HTTP/2, streaming, and how it compares to requests.
Make HTTP requests in Python with the requests library. Covers GET/POST, JSON, sessions, authentication, retries, and common pitfalls.
Call Google's Gemini models from Python for text, multimodal, streaming, chat, function calling, and embeddings. Covers the genai SDK, safety settings, file API, and async usage.
Build fast, type-safe HTTP APIs and web apps with Litestar. Covers route handlers, path/query/body params, DTOs, dependency injection, middleware, WebSockets, and OpenAPI.
The browser and Node 18+ built-in HTTP client that returns Promises. Covers GET/POST/PUT/DELETE, headers, error handling, streaming, AbortController, uploads, credentials, and CORS.
navigation
actions
cheat sheet pages
