Full-Stack LLM Developer API Cheat Sheet
Quick reference card for Anthropic, OpenAI, Mistral, and Ollama REST APIs, function calling schemas, streaming responses, and token cost formulas.
What's Inside This Handbook?
Engineered by senior artificial intelligence researchers at NextAI, this resource provides battle-tested production prompts, XML schema tags, and vector memory integration blueprints.
Chapter 1 REST API Endpoint Quick Reference
cURL and JavaScript fetch snippets for OpenAI, Anthropic, and Ollama.
Chapter 2 Server-Sent Events (SSE) Streaming
Consuming token event streams in Node.js, Laravel, and Next.js.
Chapter 3 Structured Function Calling Schemas
Defining JSON schema tool definitions for automated backend execution.
XML Guardrail Pattern Sample
<system_instructions>
<role>Senior Full-Stack Code Auditor</role>
<constraints>
1. Output strictly valid JSON without markdown quotes.
2. Audit private parameters for SOC2 compliance.
3. Return error_code 422 if confidence < 0.90.
</constraints>
</system_instructions>
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Download Now (2.1 MB)Frequently Asked Questions
Does this include token pricing formulas?
Yes, includes cost per 1M input/output tokens formulas for all 2026 flagship models.