supabase.com
A (89/100) Open to Search & TrainingSupabase | The Postgres Development Platform
| AI & /llms.txt Readiness | Signal-to-Noise Ratio | Token Savings via /llms.txt | Network TTFB | TLS & HTTP Security | DNS & Edge Stack |
|---|---|---|---|---|---|
| 90/100 | 0.6% (1,905 / 337,513 tok) | -99.7% fewer tokens | 48 ms (98/100) | 65/100 | Vercel (Next.js) |
Web-to-Token Efficiency & Agent Ingestion Cost
~4 bytes/token UTF-8 heuristic| Ingestion Source | Payload | Est. Tokens | Cost / 1k Reads (Flash $0.35) | Cost / 1k Reads (Pro $1.25) |
|---|---|---|---|---|
Raw HTML DOM (GET /) |
1,318.4 KB | 337,513 | $118.1296 | $421.8913 |
| Stripped Readable Text | 7.4 KB | 1,905 | $0.6668 | $2.3813 |
/llms.txt Manifest |
3.4 KB | 879 | $0.3077 | $1.0988 |
/llms.txt Spec Linter & Agent Endpoint Probe
Status: Spec Compliant
| GET /llms.txt | HTTP 200 · 3,516 bytes (~879 tokens · 59 lines) |
| Spec Check: # H1 Title | Pass ("Supabase Docs") |
| Spec Check: > Summary | No > blockquote summary |
| ## H2 Sections & Links | 4 sections · 44 canonical markdown links |
| GET /llms-full.txt | HTTP 200 · 6,773,668 bytes (~1,693,417 tokens) |
| GET /.well-known/mcp.json | Not advertised |
| JSON-LD Schema Entities | Organization, ImageObject, ContactPoint, PostalAddress, WebSite, SoftwareApplication, Service, OfferCatalog, Offer |
# Supabase Docs For the complete documentation in a single file, see [Full Documentation](https://supabase.com/llms-full.txt). ## Documentation - [Supabase - AI & Vectors](https://supabase.com/docs/guides/ai.md) - [Supabase - AI Tools](https://supabase.com/docs/guides/ai-tools.md) - [Supabase - Data REST API](https://supabase.com/docs/guides/api.md) - [Supabase - Auth](https://supabase.com/docs/guides/auth.md) - [Supabase - Cron](https://supabase.com/docs/guides/cron.md) - [Supabase - databas
AI Crawler /robots.txt Access Matrix
Open to Search & Training
| User-Agent Token | Purpose / Operator | Effective Directive |
|---|---|---|
| OAI-SearchBot | ChatGPT Search Citations | Allow: / |
| PerplexityBot | Perplexity Answer Citations | Allow: / |
| ChatGPT-User | Live User Agent Browsing | Allow: / |
| Claude-SearchBot | Anthropic Search Grounding | Allow: / |
| GPTBot | Foundation Model Training | Allow: / |
| ClaudeBot | Foundation Model Training | Allow: / |
| Google-Extended | Gemini Training Control | Allow: / |
| Applebot-Extended | Apple Intelligence Training | Allow: / |
| Meta-ExternalAgent | Llama Training & Indexing | Allow: / |
| CCBot | Open Dataset Training Corpus | Allow: / |
HTTP Response & Handshake Timing
GET https://supabase.com/| DNS Lookup | 4 ms | HTML Document | 1318.4 KB |
| TCP Connect | 9 ms | Script Tags | 45 |
| TLS Handshake | 0 ms | Stylesheets | 4 |
| Time to First Byte (TTFB) | 48 ms | Images (with alt) | 51 / 57 |
| Total Transfer | 54 ms | HTTP/3 (Alt-Svc) | Not advertised |
Edge Network & Application Stack
Header & DOM Signatures| Edge / Reverse Proxy | Vercel |
| Application Framework | Next.js |
| Server Header | Vercel |
| Mail Provider (MX) | Google Workspace |
| Telemetry Signatures | Server-Side / None |
| TXT Verifications | Google Search Console |
TLS Certificate & HTTP Security Policy
Port 443 X.509| Certificate Issuer | Let's Encrypt (87 days remaining) |
| Strict-Transport-Security | Present |
| Content-Security-Policy | Not set |
| X-Content-Type-Options | Not set |
| X-Frame-Options | Not set |
| Referrer-Policy | Not set |
| Permissions-Policy | Not set |
| SPF / DMARC Policy | SPF: Yes · DMARC: Yes |
Authoritative DNS & Document Head
A / AAAA / NS / Canonical| A (IPv4) | 216.150.1.193 |
| AAAA (IPv6) | None |
| NS (Nameservers) | neil.ns.cloudflare.com, christina.ns.cloudflare.com |
| HTML Title (44c) | Supabase | The Postgres Development Platform |
| /sitemap.xml | Valid XML Sitemap |
Hosted /llms.txt Mirror & Status Badge
Platform Setup Guide →
<head> Tag (for Shopify, Webflow, Framer, Wix, Squarespace & WordPress):
Technical Synthesis & Agentic Ingestion Analysis: supabase.com
Automated Engineering Assessment1. HTML-to-Token Efficiency & LLM Context Window Cost
An unauthenticated HTTPS GET request to https://supabase.com/ returns an initial HTML payload of 1,318.4 KB, corresponding to approximately 337,513 UTF-8 tokens when ingested raw by an AI coding agent, retrieval pipeline, or headless browser. After stripping inline <script>, <style>, <svg>, and DOM markup tags, the human-readable text footprint measures 1,905 tokens (7.4 KB)—yielding an HTML Signal-to-Noise Ratio of 0.6%.
Because supabase.com publishes a valid /llms.txt manifest (measuring 879 tokens across 59 lines), AI retrieval agents that read /llms.txt instead of scraping the raw DOM reduce token consumption by 99.7%—cutting 1,000-read inference input costs from $421.8913 to $1.0988 at frontier model rates ($1.25/1M tokens), or $0.3077 on Gemini 4 Hydrogen ($0.35/1M).
2. Indexed Structure Inside supabase.com/llms.txt
Sitecube’s specification linter verified 4 H2 section headings and 44 Markdown links inside https://supabase.com/llms.txt under the primary heading "Supabase Docs".
Documented sections include: Documentation</code>, <code>Pricing</code>, <code>Product overviews</code>, <code>API and agent resources.
Key canonical endpoints referenced in the manifest include
Full Documentation (https://supabase.com/llms-full.txt), Supabase - AI & Vectors (https://supabase.com/docs/guides/ai.md), Supabase - AI Tools (https://supabase.com/docs/guides/ai-tools.md), Supabase - Data REST API (https://supabase.com/docs/guides/api.md), Supabase - Auth (https://supabase.com/docs/guides/auth.md).
3. Edge Delivery, TLS Handshake & Security Header Assessment
Traffic for supabase.com resolves to 216.150.1.193 via Vercel running Next.js, achieving a measured Time to First Byte (TTFB) of 48 ms (DNS lookup: 4 ms, TCP connect: 9 ms, TLS handshake: 0 ms). The port 443 TLS certificate is issued by Let's Encrypt with 87 days remaining before expiration (valid through 2027-02-10). Outbound email authentication via SPF is present and DMARC (_dmarc.supabase.com) is enforced.
Comparable Hosts in Web-to-Token & /llms.txt Registry
Full Index (26 hosts) →| Host | Rating | /llms.txt | HTML Tokens | Text Tokens | Signal % | Crawler Posture | TTFB |
|---|---|---|---|---|---|---|---|
| sitecube.com | A+ 98 | 1,600 tok | 11,832 | 1,132 | 9.6% | Open to Search & Training | 99 ms |
| cloudflare.com | A+ 96 | 4,294 tok | 333,631 | 471 | 0.1% | Open to Search & Training | 291 ms |
| trendyflash.com | A+ 95 | 2,987 tok | 12,123 | 1,660 | 13.7% | Open to Search & Training | 112 ms |
| multifactor.com | A+ 94 | 656 tok | 98,275 | 673 | 0.7% | Open to Search & Training | 97 ms |
| github.com | A+ 92 | 7,165 tok | 131,504 | 1,159 | 0.9% | Open to Search & Training | 35 ms |
| vercel.com | A+ 92 | 1,385 tok | 149,859 | 889 | 0.6% | Open to Search & Training | 53 ms |
| aiimpacted.org | A+ 92 | 971 tok | 17,598 | 3,568 | 20.3% | Open to Search & Training | 55 ms |
| tierones.io | A+ 92 | 481 tok | 3,744 | 693 | 18.5% | Open to Search & Training | 95 ms |
| cloq.com | A 91 | 1,169 tok | 2,109 | 690 | 32.7% | Open to Search & Training | 51 ms |
| supabase.com | A 89 | 879 tok | 337,513 | 1,905 | 0.6% | Open to Search & Training | 48 ms |
| dosefacts.org | A 89 | 10,936 tok | 29,008 | 7,291 | 25.1% | Open to Search & Training | 335 ms |
| postman.com | A 89 | 5,375 tok | 118,892 | 11,040 | 9.3% | Open to Search & Training | 947 ms |