A fast, local-first REST client for VS Code

Build, send, and test HTTP APIs without leaving the editor. Free forever for commercial use — unlimited collections, environments, secrets, scripts, and collection runner. No account. No telemetry. Your data stays on your machine.

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Extension id kienvo.puffin · MIT · VS Code ^1.95.0

Local-first privacy

Collections, environments, history, and secrets stay on device. Secrets use VS Code SecretStorage. Nothing phoned home.

Agent draft → human review

Language-model tools stage a draft request bundle. Agents never auto-send or return secret values — you Approve / Run in-panel.

Built for VS Code teams

cURL and .http interop, collection runner, scripts. Pro adds Git-native storage, CLI/CI, OpenAPI, and BYOK AI.

Free forever

Unlimited HTTP — collections, environments, secrets, scripts, collection runner
Interop — cURL import/export and .http file workflows
Language-model tools — stage request drafts for human Apply / Run review
Commercial OK — free tier is free forever for commercial use

Safe agent bridge

Coding agents (Claude, Copilot, and similar) can call Puffin tools such as puffin_getCapabilities, puffin_getContext, puffin_listRequests, puffin_stageDraft, and puffin_reviewDraft. Drafts use puffin.draftBundle.v1. Secrets and response bodies are never returned to the model. The human stays in the loop.

Pricing

Free

Unlimited HTTP client features. Commercial use allowed. Forever.

Solo Pro

$59 life · $6/mo

WebSocket / SSE / gRPC, Git-native storage, CLI & CI with JUnit, OpenAPI import/export, BYOK AI (OpenAI-compatible or Anthropic) to explain responses and generate tests. 30-day trial.

Who it’s for

Developers and small teams who live in VS Code and want a Postman-class API client that stays local, works with Git, and hands off safely to coding agents.