x402 census · netintel.dev · 99a85bae401c · JSON

POST /openai/gpt-4o

live

Call OpenAI's gpt-4o via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.10 per request in USDC. Standard OpenAI chat.completions shape. EVERY call is bounded by a 16000-token combined input budget (real tokenizer) plus the 48000-char cap; output 2048. Vision: up to 4 https image_url parts (detail low/high/auto).

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

Facts from the catalogs

Field Value

URL https://netintel.dev/openai/gpt-4o

Method POST

Price $0.10 USDC = 100000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base); also accepts solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp

payTo 0xdaDc335482AD545296Fd7b28518A251fFCbEb9Df

Seller netintel.dev

Catalogs cdp (row updated 2026-09-24)

Listed since (lower bound) 2026-09-24 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-24

CDP quality counters 59 calls and 2 unique payers in 30 days, last call 2026-09-24 (catalog-reported, not verified on chain)

Category (keyword rule) inference/llm

Templated path no

x402Version in catalog 2

Service name / tags NetIntel · chat completion, llm api, ai chat, openai, no api key

Unpaid probe (census of 2026-09-30)

Field Value

Probed at 2026-09-30T23:59:29.841Z

HEAD 402

GET 402

Verdict live live: valid 402 to an unpaid GET

402 carried in header+body

x402Version in the 402 2

accepts[0] {"scheme":"exact","network":"eip155:8453","amount":"100000","payTo":"0xdaDc335482AD545296Fd7b28518A251fFCbEb9Df","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}

Live amount equals catalog price yes

Live payTo equals catalog payTo yes

extensions.bazaar in the 402 no

PAYMENT-REQUIRED header yes

WWW-Authenticate offer none

Content type / server / CORS application/json / railway-hikari / *

Latency 1,694 ms

Error Payment 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)

Field Value

Distinct payers 121

Payments 848

USDC volume $23.56

Median payment $0.01

First / last payment 2026-06-05 / 2026-09-30

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0xdaDc335482AD545296Fd7b28518A251fFCbEb9Df

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "max_tokens": 16,
   "messages": [
    {
     "content": "Say hi in one word.",
     "role": "user"
    }
   ]
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "choices": [
    {
     "finish_reason": "stop",
     "index": 0,
     "message": {
      "content": "Hi!",
      "role": "assistant"
     }
    }
   ],
   "created": 1735689600,
   "id": "chatcmpl-abc123",
   "model": "gpt-4o",
   "object": "chat.completion",
   "usage": {
    "completion_tokens": 2,
    "prompt_tokens": 11,
    "total_tokens": 13
   }
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://netintel.dev/openai/gpt-4o' -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/99a85bae401c/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"99a85bae401c"} 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 netintel.dev.