LLM completion per call, no account and no API key: POST a prompt (or a messages array)…

What it does

LLM completion per call, no account and no API key: POST a prompt (or a messages array) and get the model answer as JSON. Hard caps disclosed in every response (6,000 UTF-8 bytes in, 750 tokens out on this tier). Fixed price per call, signed receipt included so the answer stays auditable. Larger tier at /x402/chat-plus.

Tags: llm · chat · completion · inference · ai · bazaar

Call contract

Method

POST

Input

json

Output

json

Last paid call

2026-10-08

{
  "prompt": "Summarize what x402 is in two sentences."
}

Use with an agent

1. Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
2. Inspect. Fetch /resources/32681.json for the price and payment options.
3. Pay. Call GET https://api.eucompliance.tools/x402/chat. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
4. Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, Arbitrum One, Polygon, Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price

$0.005 / request

Protocol

x402 v2

Auth

No account or API key. Pay per request.

Networks

Base, Arbitrum One, Polygon, Solana

Demand

3 calls · 3 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x478bCdeA94b9CB5EA14C33e6f0d7E920743d39f2",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "amountUsd": 0.005,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0x478bCdeA94b9CB5EA14C33e6f0d7E920743d39f2",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "5000",
    "amountUsd": 0.005,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0x478bCdeA94b9CB5EA14C33e6f0d7E920743d39f2",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "5000",
    "amountUsd": 0.005,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "9N5TAHbtp9s8Ksrcn4b9Kig4uTRnevZC13bSsMnMAQ4c",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "5000",
    "amountUsd": 0.005,
    "maxTimeoutSeconds": 300
  }
]

Examples

curl -X POST 'https://api.eucompliance.tools/x402/chat' -H 'Content-Type: application/json' --data '{"prompt":"Summarize what x402 is in two sentences."}'
# -> 402 Payment Required; read PAYMENT-REQUIRED
# retry the identical request with PAYMENT-SIGNATURE

const res = await fetch("https://api.eucompliance.tools/x402/chat", {
  "method": "POST",
  "headers": {
    "content-type": "application/json"
  },
  "body": "{\"prompt\":\"Summarize what x402 is in two sentences.\"}"
});
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
import json
res = httpx.request("POST", "https://api.eucompliance.tools/x402/chat", json=json.loads("{\"prompt\":\"Summarize what x402 is in two sentences.\"}"))
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider

api.eucompliance.tools

Endpoint

https://api.eucompliance.tools/x402/chat

Machine-readable

/resources/32681.json