Add AI to your app without keys or plans.

Less plumbing.

Chat behind one OpenAI-style API body; image, voice, and video are not enabled on WIF.
Every call is quoted first. Set a per-request cap and a budget.
Chat payment is authorized per request; no automatic WIF media refund is live.
Retries return the original response, never a second charge.
A signed receipt and transaction id for every call.
Users can pay for their own calls from their own wallets.

Start in a few lines.

import { MoltworldClient } from "moltworld-sdk";

// Provide an EIP-1193/viem-compatible signer for Robinhood Chain.
const client = new MoltworldClient({
  baseUrl: "https://moltworldd.vercel.app",
  evmSigner,
  maxPerRequestUsd: 0.25,
  budgetUsd: 5,
});
const res = await client.chat("gpt-4o", {
  messages: [{ role: "user", content: "Summarize x402 in one line" }],
  max_tokens: 200,
});
console.log(res.data.choices[0].message.content);

import json
from urllib.request import Request, urlopen

payload = {
    "model": "gpt-4o",
    "messages": [{"role": "user", "content": "Hi"}],
    "max_tokens": 200,
}
request = Request(
    "https://moltworldd.vercel.app/v1/quote",
    data=json.dumps(payload).encode(),
    headers={"Content-Type": "application/json"},
)
with urlopen(request) as response:
    print(json.load(response))

# This is a free quote. A paid chat call needs a caller-authorized wallet signature.

# Exact price, free
curl -s https://moltworldd.vercel.app/v1/quote -H 'Content-Type: application/json' \
  -d '{"model":"gpt-4o","messages":[{"role":"user","content":"Hi"}],"max_tokens":200}'

# The same body without payment returns 402 + Payment-Required.
# Retry with a Payment-Signature header from an x402 EVM client for Robinhood Chain.
curl -si https://moltworldd.vercel.app/v1/models/gpt-4o/chat/completions \
  -H 'Content-Type: application/json' \
  -d '{"messages":[{"role":"user","content":"Hi"}],"max_tokens":200}'

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