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Tentacle Pay ships the economic rails for AI agents on Sui — so agents can pay and get paid without a human in the loop. Agents need to buy data, call APIs, and settle with other agents at machine speed. Tentacle Pay gives them a wallet they control, an HTTP-native payment rail (x402), and a single Sui balance they can spend across chains.

Wallet

A wallet your agent holds and spends on its own — with limits it can’t break. Drop-in tpay curl clears x402 paywalls automatically.

x402 on Sui

Any API, MCP server, or agent can charge for a request over HTTP. Stablecoins settle gasless on Sui through the Tentacle Pay facilitator.

Cross-Chain

Hold one Sui wallet, pay services on other chains. The agent pays in Sui stablecoins; Tentacle Pay settles on the destination.

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Why Sui

Sui offers gasless stablecoin transfers: an agent can move USDC and other stablecoins without holding a gas token, with sub-second finality and parallel execution. That makes Sui a natural home for high-frequency, low-value agent payments. Tentacle Pay builds on that foundation — the facilitator sponsors gas for every supported Sui coin, so an agent only ever needs a stablecoin balance to start paying.

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Start building

Set up the wallet

Install tpay, create a wallet, and let your agent pay for its first x402 API.

Charge for your API

Put an x402 paywall in front of any endpoint in a few lines.

Pay from an agent

Wrap fetch so your agent settles x402 payments automatically.

How it works

The protocol end to end — x402, the facilitator, gasless settlement, and MPC dWallets.

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Hosted endpoints

facilitator.tentaclepay.com

The x402 facilitator — verifies payment payloads and settles them on Sui.

github.com/tentaclepay

Open-source SDKs, the wallet, smart contracts, and the facilitator.