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Clerk vs Supabase: AI Search & MCP Readiness
Category: Dedicated Auth Platform vs Supabase Auth & BaaS · Measured UTC via aso-live-probe
Measured verdict: Supabase leads Clerk by 13 points (79/100 B+ vs 66/100 B) across ASO Studio’s 47-check HTTP, 29-crawler robots.txt, Markdown (/llms.txt, /pricing.md), MCP, OpenAPI, and Schema.org JSON-LD benchmark. Full individual grade-cards: clerk.com (66/100) · supabase.com (79/100).
Scope & limits: Side-by-side HTTP status codes and HTML structured data captured 2026-11-14 UTC; independent audit not affiliated with Clerk or Supabase. Technical readiness does not guarantee AI citations or sales.
1. Side-by-Side HTTP & Agent Discovery Telemetry
| Signal / Endpoint | clerk.com | supabase.com |
|---|---|---|
| ASO Score & Grade | 66/100 (B) | 79/100 (B+) |
| Cohort Rank | #22 | #5 |
| Edge TTFB · HTML | 130ms · 254 KB (41 scripts) | 58ms · 254 KB (45 scripts) |
/robots.txt (29 Bots) | 200 · 29/29 (0 explicit) | 200 · 29/29 (0 explicit) |
/sitemap.xml | 200 | 200 |
/llms.txt | 200 | 200 |
/llms-full.txt | 200 | 200 |
/pricing.md | 200 | 200 |
/.well-known/ai.txt | 404 | 404 |
/ai/summary.json | 404 | 404 |
/.well-known/mcp.json | 404 | 404 |
/.well-known/agent-card.json | 404 | 404 |
/.well-known/openapi.json | 404 | 404 |
JSON-LD @types | Organization, ImageObject, ContactPoint, PostalAddress, WebSite | Organization, ImageObject, ContactPoint, PostalAddress, WebSite, SoftwareApplication, Service, OfferCatalog, Offer |
2. Where Clerk Leads vs Where Supabase Leads
Where Clerk (clerk.com) leads:
- Permits 29/29 AI crawlers with HTTP 200 root availability
Where Supabase (supabase.com) leads:
- Overall 47-check readiness score (79/100 B+ vs 66/100 B)
- Faster root edge response (58ms TTFB vs 130ms)
- Richer root Schema.org JSON-LD (9 types vs 5)
Shared discovery gaps: Both clerk.com and supabase.com currently return non-200 responses on /.well-known/ai.txt (404/404), /.well-known/mcp.json (404/404), /.well-known/agent-card.json (404/404), /.well-known/openapi.json (404/404).
One-time $49 · 26 files · Base USDC or Monero · no signup
Download free 3-file starter for clerk.com (.txt) · EdgeScreen x402 ($0.002)
23 remaining production files
/.well-known/mcp.json, agent-card.json, openapi.json, llms-full.txt, pricing.md, answers.md, ai/*.json
Schema.org JSON-LD bundle, Cloudflare Worker edge headers, comparisons, GitHub Action CI verifier.
3. Compare Against Your Own Domain (Free Live Probe)
4. Self-Serve 26-File ASO Pack ($49)
Generate a tailored 26-file /llms-full.txt, /pricing.md, 29-crawler robots.txt, Schema.org @graph, and 14-route Edge Router .zip for clerk.com or any domain you operate. Instant browser download via USDC on Base (Chain 8453), or Monero (XMR — verified within 24h) via non-custodial Trocador AnonPay. Inspect free sample .zip · Terms · EdgeScreen x402 ($0.002 USDC).
5. More Head-to-Head Readiness Comparisons
- Supabase vs Neon (79/100 vs 30/100)
- Supabase vs Convex (79/100 vs 75/100)
- Clerk vs Privy (66/100 vs 42/100)
- Clerk vs WorkOS (66/100 vs 78/100)
- Supabase vs PlanetScale (79/100 vs 73/100)
- Cloudflare vs Vercel (89/100 vs 73/100)
- Turso vs Upstash (76/100 vs 74/100)
- Fly.io vs Render (76/100 vs 87/100)
All 60 head-to-head comparisons → · All 40 platform grade-cards →