acedatacloud-x402 2026.4.20.1

X402 payment protocol client for AceDataCloud APIs. Plugs into the acedatacloud SDK as a payment_handler.

@acedatacloud/x402-client — Python

X402 payment protocol client for AceDataCloud APIs. Plug-in for the acedatacloud SDK.

Pay-per-request with USDC — no API key, no account, no session. When an AceDataCloud API returns 402 Payment Required, this package signs the payment envelope and returns it as an X-Payment header; the SDK retries transparently.

• 🟦 Base — USDC (ERC-20) via EIP-3009 TransferWithAuthorization
• 🟪 Solana — USDC (SPL) via signed TransferChecked
• 🟨 SKALE — USDC (bridged) via EIP-3009

Install

pip install acedatacloud acedatacloud-x402

Quick start

Base or SKALE (EVM)

from acedatacloud import AceDataCloud
from acedatacloud_x402 import create_x402_payment_handler, EVMAccountSigner

client = AceDataCloud(
    payment_handler=create_x402_payment_handler(
        network="base",                         # or "skale"
        evm_signer=EVMAccountSigner.from_private_key("0x..."),
    ),
)

res = client.openai.chat.completions.create(
    model="gpt-4o-mini",
    messages=[{"role": "user", "content": "Say hi in 3 words"}],
    max_tokens=10,
)
print(res.choices[0].message.content)

Solana

from acedatacloud import AceDataCloud
from acedatacloud_x402 import create_x402_payment_handler, SolanaKeypairSigner

client = AceDataCloud(
    payment_handler=create_x402_payment_handler(
        network="solana",
        solana_signer=SolanaKeypairSigner.from_base58("..."),
    ),
)

task = client.images.generate(
    provider="nano-banana",
    prompt="a yellow banana on a white background",
)
result = task.wait()

The same handler works with AsyncAceDataCloud:

from acedatacloud import AsyncAceDataCloud

client = AsyncAceDataCloud(
    payment_handler=create_x402_payment_handler(network="base", evm_signer=signer),
)

Low-level signing

If you need to produce an X-Payment envelope without going through the SDK:

from acedatacloud_x402 import sign_evm_payment, sign_solana_payment

envelope = sign_evm_payment(requirement, evm_signer)          # dict
envelope = sign_solana_payment(requirement, solana_signer)    # dict
# base64-encode json(envelope) → X-Payment header value

Development

cd python
pip install -e ".[dev]"
pytest
ruff check .

License

MIT © AceDataCloud