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Surplus Intelligence | Open Market for AI Inference

https://www.surplusintelligence.ai
● healthy ai

Buy the cheapest inference. Sell your credits. The open order book for AI models. Up to 90% off GPT-5.5, Claude Opus 4.8, and more.

Category
ai
Chains
base, eip155:8453
Price
$0.0033–$0.0033 USDC

Quality grade

How grading works
B+ 81.0 / 100
Availability 40.0 / 40
Endpoint responded (HTTP 200)
Payability 10.0 / 20
  • ✗ Answers a real HTTP 402 challenge
  • ✓ Publishes a /.well-known/x402 descriptor
  • ✓ Payment address on record
  • ✓ Settlement network declared
  • ✓ Price declared
Demand 31.0 / 40
95 distinct payers, 15656 USDC transfers in the last 30 days
Owner verified 0.0 / 3
Nobody has claimed this listing yet
Endpoint last checked 2 h ago. On-chain activity last read 29 h ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

Paid endpoints

4 resource(s) advertised by this origin.

https://www.surplusintelligence.ai/api/inference/v1/chat/completions
https://www.surplusintelligence.ai/api/inference/v1/completions
https://www.surplusintelligence.ai/x402/api/inference/v1/chat/completions
https://www.surplusintelligence.ai/x402/api/inference/v1/completions

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -X POST https://www.surplusintelligence.ai
/.well-known/x402.json
https://www.surplusintelligence.ai/.well-known/x402

Listed in

Directories this entry was found in.

x402scan