Supabase Tutorial 8 min read

How to Create an llms.txt File for Supabase (Full Guide + Example)

Make your Supabase project visible to AI systems like ChatGPT, Claude, and Perplexity. This guide shows you exactly how to create and deploy an llms.txt file for Supabase—with three different methods and a complete example you can copy.

If you're building with Supabase—whether it's a SaaS app, documentation site, or API service—you want AI systems to understand and accurately represent your project. That's where llms.txt comes in.

This guide walks you through creating an llms.txt file specifically for Supabase projects, with three deployment methods: Supabase Storage, Edge Functions, or using our free generator.

What you'll learn

• What llms.txt is and why Supabase projects need it
• A complete llms.txt example for a Supabase project
• 3 methods to deploy: Storage, Edge Functions, or Generator
• Best practices for Supabase-specific documentation

✅ Works with any Supabase setup

• Next.js • SvelteKit • Remix • Astro • Vue / Nuxt • Flutter Web • Plain HTML • Any other

⚠️ Where does llms.txt go?

Most Supabase projects use Supabase for backend and Vercel/Netlify for frontend. In that case, place llms.txt in your /public folder on your frontend—not in Supabase. Only use Supabase Storage or Edge Functions if Supabase hosts your entire site.

# What is llms.txt?

llms.txt is a standardized file that helps AI systems understand your website. Unlike robots.txt (which controls access) and sitemap.xml (which lists URLs), llms.txt provides descriptions of what each page contains.

When someone asks ChatGPT "What does [your Supabase project] do?", the AI needs to understand your documentation, features, and pricing. Without llms.txt, AI often hallucinates—inventing features you don't have or quoting wrong prices.

❌ Without llms.txt

"I think this project might offer real-time subscriptions... but I'm not sure about the pricing."

✅ With llms.txt

"This project offers real-time subscriptions, auth, and storage. Free tier includes 500MB database. Pro starts at $25/month."

For a deeper dive, read our complete guide: What is llms.txt and how do you create one?

# Why Your Supabase Project Needs llms.txt

Supabase projects often include documentation, API references, pricing pages, and feature explanations. AI systems struggle to parse these complex pages—especially when they're JavaScript-rendered or behind authentication.

📚

Documentation Sites

Help AI understand your API endpoints, SDKs, and integration guides

💰

Pricing Pages

Ensure AI quotes accurate pricing and plan features

🚀

Feature Pages

Describe Auth, Storage, Realtime, Edge Functions, etc.

🔗

API References

Make your REST and GraphQL endpoints discoverable by AI

Fun fact: Supabase itself has an llms.txt file! Check it out at supabase.com/llms.txt. You can follow their example for your own project.

# Complete llms.txt Example for Supabase

Here's a complete, copy-paste example of an llms.txt file for a typical Supabase-powered SaaS application. Customize it for your specific project:

llms.txt Supabase Project

# YourApp - Built on Supabase

> YourApp is a [type of application] built on Supabase that helps 
> [target audience] achieve [outcome]. We provide [key features] 
> with real-time capabilities, secure authentication, and scalable 
> infrastructure. Founded in [year], we serve [customer count] users 
> across [regions/industries].

## Core Features

- [Dashboard](https://yourapp.com/dashboard): Main application 
  dashboard with real-time data visualization, user analytics, 
  and project management. Built with Supabase Realtime for 
  instant updates.

- [Authentication](https://yourapp.com/auth): Secure sign-up and 
  login powered by Supabase Auth. Supports email/password, magic 
  links, OAuth (Google, GitHub, Discord), and SSO for enterprise.

- [API](https://yourapp.com/api): RESTful API documentation with 
  endpoints for all core functionality. Auto-generated from 
  Supabase PostgREST with row-level security.

## Documentation

- [Getting Started](https://yourapp.com/docs/getting-started): 
  Quick start guide covering account setup, API key generation, 
  and first integration in under 5 minutes.

- [SDK Reference](https://yourapp.com/docs/sdk): Complete SDK 
  documentation for JavaScript, Python, and Flutter. Includes 
  code examples and type definitions.

- [Database Schema](https://yourapp.com/docs/schema): Database 
  structure documentation including tables, relationships, and 
  row-level security policies.

- [Edge Functions](https://yourapp.com/docs/functions): Guide to 
  our serverless functions for custom business logic, webhooks, 
  and third-party integrations.

## Pricing

- [Pricing](https://yourapp.com/pricing): Three tiers available:
  - Free: Up to 500MB database, 1GB storage, 50K auth users
  - Pro ($25/month): 8GB database, 100GB storage, unlimited auth
  - Enterprise (custom): Dedicated infrastructure, SLA, support

## Resources

- [Blog](https://yourapp.com/blog): Technical tutorials, product 
  updates, and best practices for building with Supabase.

- [Changelog](https://yourapp.com/changelog): Recent updates, new 
  features, and improvements to the platform.

- [Status](https://status.yourapp.com): Real-time system status 
  and incident history.

## Support

- [Help Center](https://yourapp.com/help): FAQ, troubleshooting 
  guides, and common integration patterns.

- [Community](https://discord.gg/yourapp): Discord community with 
  5,000+ developers for questions and discussions.

- [Contact](https://yourapp.com/contact): Direct support via email 
  for Pro and Enterprise customers.

Key elements in this example:

Supabase-specific features

Mentions Auth, Realtime, PostgREST, Edge Functions, RLS

Concrete pricing

Specific numbers for database, storage, and auth limits

Developer resources

SDK docs, API reference, and database schema

Support channels

Help center, Discord community, and contact info

# Method 1: Deploy via Supabase Storage

The simplest method—upload llms.txt as a static file to Supabase Storage and serve it publicly. Best for projects with stable documentation that doesn't change frequently.

Create the llms.txt file locally

Create a file named llms.txt on your computer with your content (use the example above as a template).

Create a public Storage bucket

In your Supabase dashboard, go to Storage → Create bucket. Name it public and enable public access.

-- Or create via SQL:
INSERT INTO storage.buckets (id, name, public)
VALUES ('public', 'public', true);

Upload the file

Upload llms.txt to the root of your public bucket. The file will be available at:

https://[project-ref].supabase.co/storage/v1/object/public/public/llms.txt

Set up a redirect (optional)

If you have a custom domain, set up a redirect so yourdomain.com/llms.txt points to the Storage URL. You can do this in your frontend framework or via DNS/CDN rules.

# Method 2: Deploy via Edge Functions

For dynamic llms.txt content—maybe you want to pull from your database or update based on your latest docs—use a Supabase Edge Function.

supabase/functions/llms-txt/index.ts

import { serve } from "https://deno.land/std@0.168.0/http/server.ts"

const llmsTxtContent = `# YourApp - Built on Supabase

> YourApp is a [description]. We help [audience] achieve [outcome].

## Features

- [Dashboard](https://yourapp.com/dashboard): Real-time dashboard
- [API Docs](https://yourapp.com/docs/api): REST API reference

## Pricing

- [Pricing](https://yourapp.com/pricing): Free, Pro ($25/mo), Enterprise
`;

serve((req) => {
  // Only respond to GET requests for /llms.txt
  const url = new URL(req.url);
  
  if (url.pathname === "/llms.txt" || url.pathname === "/llms-txt") {
    return new Response(llmsTxtContent, {
      headers: {
        "Content-Type": "text/plain; charset=utf-8",
        "Cache-Control": "public, max-age=86400", // Cache for 24 hours
      },
    });
  }

  return new Response("Not Found", { status: 404 });
});

Deploy the function:

Terminal

# Create the function
supabase functions new llms-txt

# Deploy to production
supabase functions deploy llms-txt --project-ref your-project-ref

# Your llms.txt is now available at:
# https://[project-ref].supabase.co/functions/v1/llms-txt

Pro tip: You can make the Edge Function dynamic by querying your database for page titles and descriptions, then generating the llms.txt content on-the-fly.

# Method 3: Use Our Free Generator

The fastest way to create an llms.txt file for your Supabase project. Our free llms.txt generator automatically scans your sitemap, analyzes each page, and generates AI-optimized descriptions.

1

Go to llmstxtgenerator.org

Enter your Supabase project's domain
2

Wait ~30 seconds for AI analysis

We scan your sitemap and generate descriptions
3

Download your llms.txt file

First 20 URLs free, full file for $0.10/URL
4

Upload to Supabase Storage or your domain

Use Method 1 above to deploy

Generate Your llms.txt Free

No signup required · Works with any Supabase project

# Best Practices for Supabase llms.txt

✓ Mention Supabase features explicitly

If you use Supabase Auth, Realtime, or Edge Functions, say so. AI systems can then accurately describe your tech stack.

✓ Include your database structure (if public)

If you have public API documentation that shows your schema, link to it with descriptions of key tables and relationships.

✓ Document your API endpoints

Supabase auto-generates REST APIs. Link to your API documentation and describe what each major endpoint does.

✓ Be specific about limits and pricing

"500MB database on free tier" is better than "generous free tier." Specific numbers help AI give accurate answers.

✗ Don't expose sensitive endpoints

Only include publicly accessible pages. Don't list admin dashboards, internal tools, or authenticated-only content.

✗ Don't forget to update it

When you add features, change pricing, or update documentation, regenerate your llms.txt to keep it current.

# Verify Your Deployment

After deploying, verify your llms.txt is accessible and formatted correctly:

Visit the URL directly

Go to yourdomain.com/llms.txt in your browser. You should see plain text, not HTML.

Check the Content-Type header

Should be text/plain. Check in browser DevTools → Network tab.

Test with curl

curl -I https://yourdomain.com/llms.txt

Ask AI about your project

Try asking ChatGPT or Claude about your product. With a good llms.txt, answers should be more accurate.

# Troubleshooting

Common issues when deploying llms.txt with Supabase and how to fix them:

❌ llms.txt shows 404

You likely uploaded to the wrong bucket or forgot to enable public access. In Supabase Storage, ensure the bucket is set to public: true and the file path is correct.

❌ File downloads instead of showing text

The Content-Type header is wrong. If using Edge Functions, ensure you return Content-Type: text/plain; charset=utf-8. Supabase Storage sets this automatically for .txt files.

❌ Edge Function URL includes /functions/v1

Use rewrites or redirects to map /llms.txt to your Edge Function URL. In Vercel, add a rewrite in vercel.json. In Netlify, use _redirects.

❌ Vercel/Netlify frontend overrides your file

Ensure your public/llms.txt exists and isn't blocked by route handlers or middleware. In Next.js, check that the file isn't being caught by a catch-all route.

❌ CORS errors when accessing llms.txt

If using Edge Functions, add appropriate CORS headers. For AI crawlers, this usually isn't an issue since they make server-side requests, but browser testing may fail without CORS.

# Frequently Asked Questions

Does Supabase have official llms.txt support?

Yes! Supabase itself has an llms.txt file at supabase.com/llms.txt. However, you need to create your own for your Supabase-powered projects.

Should I include my Supabase API keys in llms.txt?

Absolutely not. llms.txt is public. Never include API keys, secrets, or sensitive configuration. Only include publicly accessible information.

Can I use llms.txt with Supabase's built-in hosting?

If you're using Supabase for backend only with a frontend on Vercel/Netlify, put llms.txt in your frontend's public folder. If hosting on Supabase, use Storage or Edge Functions as described above.

How often should I update my llms.txt?

Update whenever you add features, change pricing, or significantly update documentation. At minimum, review quarterly. Use our generator to quickly regenerate.

What if my Supabase project is private/internal?

llms.txt is designed for public websites. If your project is internal or behind authentication, you likely don't need llms.txt—AI systems wouldn't be accessing it anyway.

Ready to Create Your Supabase llms.txt?

Use our free generator to create an AI-optimized llms.txt for your Supabase project in seconds. Works with any domain.

Generate Your llms.txt Free

No signup required · First 20 URLs free

🧩 Related search terms (for developers searching variations)

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Complete Guide

What is llms.txt?

Everything you need to know about llms.txt and how to create one for your website.

Comparison

llms.txt vs robots.txt vs sitemap.xml

Understand the differences between these three files and when to use each.

# What is llms.txt?

❌ Without llms.txt

✅ With llms.txt

# Why Your Supabase Project Needs llms.txt

# Complete llms.txt Example for Supabase

Key elements in this example:

# Method 1: Deploy via Supabase Storage

Create the llms.txt file locally

Create a public Storage bucket

Upload the file

Set up a redirect (optional)

# Method 2: Deploy via Edge Functions

Deploy the function:

# Method 3: Use Our Free Generator

# Best Practices for Supabase llms.txt

✓ Mention Supabase features explicitly

✓ Include your database structure (if public)

✓ Document your API endpoints

✓ Be specific about limits and pricing

✗ Don't expose sensitive endpoints

✗ Don't forget to update it

# Verify Your Deployment

# Troubleshooting

❌ llms.txt shows 404

❌ File downloads instead of showing text

❌ Edge Function URL includes /functions/v1

❌ Vercel/Netlify frontend overrides your file

❌ CORS errors when accessing llms.txt

# Frequently Asked Questions

Does Supabase have official llms.txt support?

Should I include my Supabase API keys in llms.txt?

Can I use llms.txt with Supabase's built-in hosting?

How often should I update my llms.txt?

What if my Supabase project is private/internal?

Ready to Create Your Supabase llms.txt?

Related Articles

What is llms.txt?

llms.txt vs robots.txt vs sitemap.xml