Llm Claude Sonnet

Last 30 days

Uptime

100%

Response time

170 ms typical, 170 ms slowest 5%

Last check

2 h ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://x402.agentindex.world/llm/claude-sonnet" \
  -H "content-type: application/json" \
  -d '{"max_tokens":150,"messages":[{"content":"Summarize in one sentence: The Eiffel Tower is a wrought-iron lattice tower on the Champ de Mars in Paris, France. It was designed by Gustave Eiffel's engineering company and built as the entrance arch for the 1889 World's Fair. Initially criticized by some of France's leading artists and intellectuals for its design, it has become a global cultural icon of France and one of the most recognizable structures in the world, attracting millions of visitors every year.","role":"user"}]}'

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fx402.agentindex.world%2Fllm%2Fclaude-sonnet
const res = await pay("https://x402.agentindex.world/llm/claude-sonnet", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"max_tokens":150,"messages":[{"content":"Summarize in one sentence: The Eiffel Tower is a wrought-iron lattice tower on the Champ de Mars in Paris, France. It was designed by Gustave Eiffel's engineering company and built as the entrance arch for the 1889 World's Fair. Initially criticized by some of France's leading artists and intellectuals for its design, it has become a global cultural icon of France and one of the most recognizable structures in the world, attracting millions of visitors every year.","role":"user"}]}),
});
console.log(await res.json());

Example input

{
  "max_tokens": 150,
  "messages": [
    {
      "content": "Summarize in one sentence: The Eiffel Tower is a wrought-iron lattice tower on the Champ de Mars in Paris, France. It was designed by Gustave Eiffel's engineering company and built as the entrance arch for the 1889 World's Fair. Initially criticized by some of France's leading artists and intellectuals for its design, it has become a global cultural icon of France and one of the most recognizable structures in the world, attracting millions of visitors every year.",
      "role": "user"
    }
  ]
}

Example output

{
  "choices": [
    {
      "finish_reason": "stop",
      "index": 0,
      "message": {
        "content": "The Eiffel Tower, a wrought-iron lattice tower in Paris designed by Gustave Eiffel's company for the 1889 World's Fair, was initially criticized by prominent French artists and intellectuals but has since become a globally recognized cultural icon that draws millions of visitors annually.",
        "role": "assistant"
      }
    }
  ],
  "created": 1790780999,
  "id": "gen-1790780999-5D8mNBe2jJJ4gO8UyUsm",
  "model": "anthropic/claude-sonnet-5.5",
  "object": "chat.completion",
  "provider": "Anthropic",
  "usage": {
    "completion_tokens": 100,
    "cost": 0.00132,
    "prompt_tokens": 160,
    "total_tokens": 260
  },
  "x402_receipt": {
    "latency_ms": 1700,
    "model_served": "anthropic/claude-sonnet-5.5",
    "price_paid_usdc": 0.001892,
    "upstream": "llm/claude-sonnet"
  }
}

Security scan

• No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks