har2sdk

Paste a HAR (Chrome / Firefox network export) → typed TypeScript fetch SDK with LLM-named methods, resource grouping, and auth detection.

Live: https://har2sdk.vercel.app/

No signup. Free. Same shape as our two sibling tools:

• jsontosdk — paste JSON → typed SDK
• dotenv2types — paste .env → typed env + Zod
• har2sdk — paste HAR → typed fetch SDK ← you are here

What's it good for

Wrapping a third-party API that has no published OpenAPI spec. Capture traffic in DevTools (filter by API origin → right-click → Save all as HAR), paste the HAR here, get back:

• client.ts — a typed SDK class with semantic method names (client.users.create({...}), not request('POST', '/v1/users', ...))
• types.ts — request and response interfaces
• README.md — three usage examples + auth notes

Three examples

1. Wrapping an unofficial vendor API

HAR captured from api.somesaas.com/v2/... → SDK with client.users.create(), client.users.list(), client.messages.send(), all typed from real payloads.

2. Generating a client for an internal API without OpenAPI

Run your e2e tests → save the HAR → paste → typed client your frontend can import — kept in sync by re-pasting whenever the backend ships shape changes.

3. Bootstrapping an agent / scraping workflow

Browser through the target site once → HAR → typed SDK → call from a Claude or Composio tool integration. Zero spec-reading.

What we redact before upload

Before your HAR ever leaves the browser, we scan and replace these patterns with <REDACTED> (the header NAMES are kept so the LLM can detect auth shape, but VALUES are stripped):

• Authorization: Bearer ...
• X-API-Key: ...
• JWT-shaped values (eyJ...)
• AWS access key ids (AKIA...)
• Stripe-style live/test keys (sk_live_..., sk_test_...)

We also dedupe (one sample per method + normalized path), cap input at 50 KB / 50 unique endpoints, and never log paste content.

Limits

• 50 KB or 50 unique endpoints per paste (whichever hits first; larger HARs are sampled)
• 20 generations / hour / IP (move to paid in v2 if anyone asks)
• Browser HAR v1.2 format (DevTools default)

Repo layout

This repo is the public site. Built on Astro + Vercel + Anthropic Haiku 4.5, plumbing mirrors dotenv2types. No npm package yet — paste output into your repo directly.