Ask about SvelteKit.Get Next.js patterns.Every time.
LLMs are wrong on 45% of cross-framework questions. They generate deprecated APIs, wrong auth patterns, and stale syntax — confidently.
Grounded Code reads the actual docs. Paste a URL, ask a question, get cited code that works.
“I was integrating the Gmail API — a simple notification hook. I asked an AI: read through the Gmail docs and write me a utility function.
It generated code from training data. The auth pattern was deprecated. The scopes were wrong.
Two hours later I had the right answer — from the actual docs. That was the moment.”
— Alvin Quach, founder
How it works
Three steps. Zero docs-reading.
Import
Paste any docs URL — Stripe's API reference, Next.js App Router guide, Prisma's query docs. We crawl every page and understand the structure. Takes about 10 seconds.
docs.stripe.com/apiAsk
Ask in plain English. Get working code grounded in the live documentation. Every answer traces back to the exact section it came from.
"Create a subscription with a trial period"Ship
Copy the code. It works. The endpoints are current. The auth is correct. The parameters are right. Because it came from the docs, not from training data.
// cited, tested, correctThis happened to you last week
Real questions. Real failures. Real answers from Grounded Code.
ChatGPT generates Next.js middleware with a deprecated package (auth-helpers-nextjs). You spend 2 hours debugging before finding the SvelteKit guide uses safeGetSession(), sequence(), and a completely different cookie API.
safeGetSession() wrapper, filterSerializedResponseHeaders, sequence() from hooks, the correct getAll/setAll cookie pattern — with citations to the exact SvelteKit guide section.
Every LLM generates authMiddleware() in middleware.ts. Both were renamed months ago — authMiddleware to clerkMiddleware (which doesn't protect routes by default), middleware.ts to proxy.ts (CVE fix). Your app silently lets unauthenticated users through.
clerkMiddleware() with createRouteMatcher, proxy.ts filename, auth() is now async in v6 — all from Clerk's current migration guide.
ChatGPT generates an Express handler with req.body and app.post(). Astro doesn't have req or res. You need export async function POST, context.request.text() for the raw body, and prerender = false. None of it transfers from Express.
The correct Astro endpoint pattern: export POST function, APIContext type, output: 'server' in config, and the raw body via request.text() for Stripe signature verification.
Every tutorial is for Next.js. You get useChat from the wrong package, StreamingTextResponse (removed in v4), and maxToolRoundtrips (renamed to maxSteps, then to stopWhen). Three layers of wrong.
useChat from the SvelteKit-specific package, +server.ts endpoint pattern, toUIMessageStreamResponse() (current API), and the correct streaming setup for SvelteKit — not translated from Next.js.
No tool can answer this. ChatGPT gives you Next.js patterns for all three. Cursor @Docs can only search one source at a time. You open three browser tabs and spend an afternoon stitching docs together.
One answer combining all three sources: SvelteKit +server.ts endpoint for Stripe, Supabase auth from hooks.server.ts, and the correct way to pass the client_secret through SvelteKit's load function. Three docs, one coherent answer.
Why not the tools you already use?
Every tool fails differently. Grounded Code fixes the root cause.
ChatGPT / Claude
Generate Next.js patterns for everything
- Stale training data (months behind)
- Confidently generates deprecated APIs
- Re-reads docs every conversation
- No persistence across sessions
- Same answer for SvelteKit and Next.js
Cursor @Docs
Retrieve from one source at a time
- Keyword indexing, not structural understanding
- Can't search across multiple doc sources
- Falls back to model knowledge when index fails
- Re-index per project
- No cross-source synthesis
Copilot
Autocomplete with no doc awareness
- Completes based on your current file
- No knowledge of which API is current
- Can't tell you if a pattern is deprecated
- Great for boilerplate, wrong for integration
- Suggests what looks right, not what is right
Stack Overflow
You are the retrieval engine
- You search, open 5 tabs, cross-reference
- Top answers often years out of date
- You decide which answer applies to your version
- No framework-specific filtering
- That's the hour of reading we eliminate
Perplexity
Search the web, not the docs
- Returns blog posts and tutorials, not official docs
- Popularity-ranked, not accuracy-ranked
- Top result for 'Supabase auth SvelteKit' is a 2023 blog
- Summarizes secondary sources, not primary docs
- No persistent source library
Crawls live docs
We index every page of the documentation at crawl time. When you ask, we retrieve from current docs — not training data.
Cross-source retrieval
Ask one question, get answers synthesized from all your imported sources. Stripe + SvelteKit + Supabase in one response.
Framework-native code
Grounded Code knows which framework's docs it's reading. SvelteKit answers come from SvelteKit docs — not translated from Next.js.
Real test, real results
We asked all three the same question.
“How do I get the current user in a Supabase SvelteKit app?”
1import { createServerSupabaseClient }2 from "@supabase/auth-helpers-nextjs"34export async function middleware(req) {5 const sb = createServerSupabaseClient(6 { req, res }7 )8 // auth-helpers-nextjs: removed 20239}
1const { data: { user } } =2 await supabase.auth.getUser()34// getUser() makes a network request5// every time it's called.6// Use getClaims() for cached access.78if (!user) redirect("/login")
1const { data: { session } } =2 await supabase.auth.getClaims()34// getClaims() reads from JWT — no5// network round-trip. Introduced in6// @supabase/ssr v0.5+.78// Source: Supabase Auth Docs §3.2
Live example
What it actually looks like
How do I create a checkout session with a 14-day free trial?
const session = await stripe.checkout.sessions.create({mode: 'subscription',line_items: [{ price: priceId, quantity: 1 }],subscription_data: {trial_period_days: 14,},success_url: `${baseUrl}/success?session_id={CHECKOUT_SESSION_ID}`,cancel_url: `${baseUrl}/pricing`,});
Your source library
Import once. Search across everything.
My Sources (20)
all indexedListen for events on your Stripe account to trigger reactions...
Twilio sends HTTP POST requests to your webhook URL...
Send real-time data from your database to another system...
On the roadmap
The core works today. Here's what's next.
Personal notes
Pin what the docs don't say. Your discoveries improve every future answer.
Doc change alerts
Get notified when library or framework docs change between versions.
Team sharing
Share sources and notes across your team. One person's discovery helps everyone.
More source types
Data docs, service configs, internal specs. Same crawl pipeline, more coverage.
Shipping based on what beta users actually need. Your feedback shapes the roadmap.
Free to start. $12/mo when you're hooked.
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FAQ