Guides
Developer guides for VS Code
Step-by-step answers to everyday development questions — testing APIs, connecting to databases, editing data files, working with LLMs and checking for security issues — without leaving your editor.
APIs
How to test REST APIs in VS Code
Send your first request, use environments instead of hard-coded hosts, save collections, test error cases and generate code — all inside VS Code.
How to test a GraphQL API in VS Code
Send GraphQL queries from VS Code with variables, an operation name and auth, read data and errors correctly, and generate TypeScript types from a schema.
Free Postman alternative in VS Code: which API client to use
Text-file, GUI and all-in-one API clients for VS Code compared honestly — what each is good at, and what DevSnip Pro does not do yet.
AI and LLMs
How to count LLM tokens and estimate cost in VS Code
Estimate prompt tokens and per-request, daily and monthly cost across 18 models locally, then clean up model output and plan RAG context — no API key.
How to install and use OpenCode in VS Code
Install or repair the OpenCode AI coding agent from VS Code, launch it in your workspace, and check its work with deterministic local tools.
Looking for a specific setting or command? The documentation covers every feature, and the FAQ answers common questions.