AI Inference · x402 · early usage

LLM chat completion

Name: LLM chat completion
Price: 0.01 USD
Availability: InStock

LLM chat completion. $0.01 USDC per call on Base, no API key. POST JSON { prompt } or { messages: [{ role, content }] }; optional model (OpenRouter slug) and max_tokens (default 800, max 2000). Falls back across up to 5 models so one outage does not fail the…

by uxus.finance · discovered, not yet claimed by its owner · updated 2026-10-12

30d calls3

30d payers3

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Tags: bazaar

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-12

Input example from Bazaar metadata

{
  "max_tokens": {
    "description": "Max completion tokens. Default 800, max 2000.",
    "type": "number"
  },
  "messages": {
    "description": "Chat messages [{ role, content }]. Alternative to prompt.",
    "type": "array"
  },
  "model": {
    "description": "Optional model slug; still falls back through the chain.",
    "type": "string"
  },
  "prompt": {
    "description": "User prompt. Provide this or messages[].",
    "type": "string"
  }
}

Output example

{
  "content": "The answer is ...",
  "latency_ms": 1200,
  "model": "deepseek/deepseek-chat",
  "usage": {
    "completion_tokens": 80,
    "prompt_tokens": 24,
    "total_tokens": 104
  }
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/40050.json for the price and payment options.
Pay. Call GET https://uxus.finance/api/llm. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
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, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.01 / request
Protocol: x402 v1
Auth: No account or API key. Pay per request.
Networks: Base
Demand: 3 calls · 3 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base base	USDC	$0.01	0xE0Ed7A30589Fec49e98F2085c7162B90FdbB83de	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "base",
    "payTo": "0xE0Ed7A30589Fec49e98F2085c7162B90FdbB83de",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {},
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": null,
  "type": "string"
}

Examples

curl

curl -X POST 'https://uxus.finance/api/llm' -H 'Content-Type: application/json' --data '{"max_tokens":{"description":"Max completion tokens. Default 800, max 2000.","type":"number"},"messages":{"description":"Chat messages [{ role, content }]. Alternative to prompt.","type":"array"},"model":{"description":"Optional model slug; still falls back through the chain.","type":"string"},"prompt":{"description":"User prompt. Provide this or messages[].","type":"string"}}'
# -> 402 Payment Required; read PAYMENT-REQUIRED
# retry the identical request with PAYMENT-SIGNATURE

JavaScript

const res = await fetch("https://uxus.finance/api/llm", {
  "method": "POST",
  "headers": {
    "content-type": "application/json"
  },
  "body": "{\"max_tokens\":{\"description\":\"Max completion tokens. Default 800, max 2000.\",\"type\":\"number\"},\"messages\":{\"description\":\"Chat messages [{ role, content }]. Alternative to prompt.\",\"type\":\"array\"},\"model\":{\"description\":\"Optional model slug; still falls back through the chain.\",\"type\":\"string\"},\"prompt\":{\"description\":\"User prompt. Provide this or messages[].\",\"type\":\"string\"}}"
});
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
import json
res = httpx.request("POST", "https://uxus.finance/api/llm", json=json.loads("{\"max_tokens\":{\"description\":\"Max completion tokens. Default 800, max 2000.\",\"type\":\"number\"},\"messages\":{\"description\":\"Chat messages [{ role, content }]. Alternative to prompt.\",\"type\":\"array\"},\"model\":{\"description\":\"Optional model slug; still falls back through the chain.\",\"type\":\"string\"},\"prompt\":{\"description\":\"User prompt. Provide this or messages[].\",\"type\":\"string\"}}"))
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: uxus.finance
Endpoint: https://uxus.finance/api/llm
Machine-readable: /resources/40050.json