x402 census · api.webbersites.com · ef407bf2b07c · JSON

POST /v1/messages

unprobed

ANTHROPIC-COMPATIBLE /v1/messages — Claude Haiku 4.5 through the exact Anthropic API dialect: same request/response shape, no Anthropic account, the x402 payment IS the auth. Point an Anthropic SDK's base_url at https://api.webbersites.com and pay per call. Caps: 16,000 input chars, 1,024 output tokens (max_tokens clamped), text-only, no streaming.

Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.

Facts from the catalogs

Field Value

URL https://api.webbersites.com/v1/messages

Method POST

Price $0.01 USDC = 10000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0xdd5fcEa81CA6f1EB39FEd5B973DE794293B81ba6

Seller api.webbersites.com

Catalogs cdp (row updated 2026-09-28)

Listed since (lower bound) 2026-09-28 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-28

CDP quality counters 18 calls and 5 unique payers in 30 days, last call 2026-09-28 (catalog-reported, not verified on chain)

Category (keyword rule) inference/llm

Templated path no

x402Version in catalog 2

Service name / tags WebberSites x402 Data API · Inference

Unpaid probe (census of )

Field

Value

Probe

not probed in this build

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 73

Payments 162

USDC volume $0.43

Median payment $0.001

First / last payment 2026-06-28 / 2026-09-23

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0xdd5fcEa81CA6f1EB39FEd5B973DE794293B81ba6

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "max_tokens": 256,
   "messages": [
    {
     "content": "Summarize x402 in one sentence.",
     "role": "user"
    }
   ],
   "model": "claude-haiku-4-5"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "content": [
    {
     "text": "x402 is an open protocol...",
     "type": "text"
    }
   ],
   "id": "msg_...",
   "model": "claude-haiku-4-5",
   "role": "assistant",
   "stop_reason": "end_turn",
   "type": "message",
   "usage": {
    "input_tokens": 18,
    "output_tokens": 24
   }
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://api.webbersites.com/v1/messages' -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/ef407bf2b07c/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"ef407bf2b07c"} 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 api.webbersites.com.