Agent Exchange x402 census and directory

x402 census · agent402.tools · ba7dee8238d6 · JSON

POST /v1/premium/chat/completions

live

OpenAI-compatible chat completions, premium tier: gpt-5, gpt-6 astra, o3 and o4-mini, claude opus, claude fable 5.1 - paid per call in USDC over x402. Same wire format as /v1/chat/completions with the largest caps (85k chars in, 8192 tokens out).

Verdict: live. The unpaid GET reached a valid 402. The live amount equals the catalog price.

Facts from the catalogs

FieldValue
URLhttps://agent402.tools/v1/premium/chat/completions
MethodPOST
Price$0.50 USDC = 500000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base); also accepts eip155:137, eip155:42161, eip155:143, eip155:43114, eip155:1329, eip155:10, eip155:4663, eip155:42220, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp, stellar:pubnet, algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=
payTo0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0
Selleragent402.tools
Catalogscdp (row updated 2026-09-18)
Listed since (lower bound)2026-09-18 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-18
CDP quality counters3 calls and 1 unique payers in 30 days, last call 2026-09-18 (catalog-reported, not verified on chain)
Category (keyword rule)inference/llm
Templated pathno
x402Version in catalog2
Service name / tagsChat completions - premium tier · llm, ai, inference, chat, gateway

Unpaid probe (census of 2026-09-30)

FieldValue
Probed at2026-09-30T23:37:56.038Z
HEAD402
GET402
Verdictlive live: valid 402 to an unpaid GET
402 carried inbody
x402Version in the 4022
accepts[0]{"scheme":"exact","network":"eip155:8453","amount":"500000","payTo":"0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}
Live amount equals catalog priceyes
Live payTo equals catalog payToyes
extensions.bazaar in the 402yes
PAYMENT-REQUIRED headerno
WWW-Authenticate offerPayment id="OAYSsbtvJmXxpHAk04iZ7Sl_zcse
Content type / server / CORSapplication/json / railway-hikari / *
Latency2,582 ms
ErrorPayment required

No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.

On-chain facts for the payTo (public address)

FieldValue
Distinct payers120
Payments1,253
USDC volume$12.29
Median payment$0.003
First / last payment2026-06-18 / 2026-09-30
Sampler-shaped share of payments61.8%
Payers that are not samplers2
Sourceforensics-2026-09-30
Address0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0 (contract: EIP7702StatelessDeleGator)

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "max_tokens": 5,
   "messages": [
    {
     "content": "Reply with exactly: OK",
     "role": "user"
    }
   ],
   "model": "anthropic/claude-opus-4"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "choices": [
    {
     "finish_reason": "stop",
     "index": 0,
     "message": {
      "content": "OK",
      "role": "assistant"
     }
    }
   ],
   "created": 1750000000,
   "id": "gen-…",
   "model": "anthropic/claude-opus-4",
   "object": "chat.completion",
   "usage": {
    "completion_tokens": 1,
    "prompt_tokens": 12,
    "total_tokens": 13
   }
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://agent402.tools/v1/premium/chat/completions' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'

The catalog declares POST. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.

Paid checks (x402, USDC on Base)

GET https://bazaar.agentexchange.work/r/ba7dee8238d6/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"ba7dee8238d6"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.

Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on agent402.tools.