ToolVet
81trust / 100

Llm

by uxus.finance in AI models & inference

x402 APIPassing, checked 4 h ago

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 call. Returns { content, model, usage, latency_ms }.

POST
https://uxus.finance/api/llm
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
144 ms
426 ms slowest 5%
Last check
Passed
4 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://uxus.finance/api/llm

Each call costs $0.01 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

Built from the input schema. Replace the values with your own.

POST https://uxus.finance/api/llm
content-type: application/json

{
  "max_tokens": 1,
  "messages": [
    "example"
  ],
  "model": "example",
  "prompt": "example"
}

Parameters

ParameterTypeRequiredDescription
max_tokensnumberNoMax completion tokens. Default 800, max 2000.
messagesarrayNoChat messages [{ role, content }]. Alternative to prompt.
modelstringNoOptional model slug; still falls back through the chain.
promptstringNoUser prompt. Provide this or messages[].

Example response

The provider's example. We can't check it without paying.

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

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://uxus.finance/api/llm' \
  -H 'content-type: application/json' \
  --data-raw '{"max_tokens":1,"messages":["example"],"model":"example","prompt":"example"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://uxus.finance/api/llm' \
  -H 'content-type: application/json' \
  --data-raw '{"max_tokens":1,"messages":["example"],"model":"example","prompt":"example"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fuxus.finance%2Fapi%2Fllm&method=POST
const res = await pay("https://uxus.finance/api/llm", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "max_tokens": 1,
    "messages": [
      "example"
    ],
    "model": "example",
    "prompt": "example"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://uxus.finance/api/llm",
        json={
            "max_tokens": 1,
            "messages": [
                "example",
            ],
            "model": "example",
            "prompt": "example",
        },
    )
    print(res.status_code, res.text)

Security scan

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Recent checks

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4 h agoPassed402133 ms$0.01
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13 h agoPassed402151 ms$0.01
17 h agoPassed402225 ms$0.01
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25 h agoPassed402100 ms$0.01
30 h agoPassed402124 ms$0.01
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3 days agoPassed40270 ms$0.01