b402 is built with security-first principles, utilizing audited smart contracts and a trust-minimized facilitator to handle verification and settlement of payments between agents and service providers.

b402:คู่มือโปรเจกต์ | อัปเดตล่าสุด การขายล่วงหน้าและ Airdrop

Q: What is the Purpose of b402?

The primary goal of b402 is to provide an open, on-chain payment standard that extends the HTTP 402 Payment Required status code into a programmable settlement layer for AI agents and web services on the BNB Chain.

Q: How Can I Participate in b402's Ecosystem?

Developers and service providers can integrate b402 to enable programmatic, per-request, or usage-based payments. This involves setting up a server or seller service and configuring it to interact with the b402 facilitator for payment verification and settlement.

Q: What Sets b402 Apart from Competitors?

b402 differentiates itself by offering agent-to-agent payments with native crypto primitives, low-fee micropayments without custodians, integrated identity through ERC-8004, and BNB-native deployment with EVM compatibility.

Q: What are the Risks Associated with b402?

As with any blockchain-based protocol, potential risks include smart contract vulnerabilities, reliance on the facilitator's security, and the evolving regulatory landscape affecting crypto payments. b402 mitigates these risks through open-source development, audits, and community engagement.

b402

x402 Payment

b402 is a complete internet-native payment infrastructure built on the BNB Chain, inspired by the HTTP 402 standard and x402 protocol.

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What is b402?

b402 is an open protocol for internet-native payments on the BNB Chain, extending the HTTP 402 Payment Required standard into a programmable settlement layer for AI agents and web services. It enables instant, verifiable payments, identity verification, and service access without intermediaries, accounts, or manual steps.

How Does b402 Work?

b402 operates by allowing services to require payment or identity proof before responding to a request. When a client requests a resource, the service responds with a 402 Payment Required status and b402-formatted payment instructions. The client then sends a payment payload to the b402 facilitator for settlement. Once verified, the server releases the requested resource.

What Makes b402 Unique?

b402 stands out by providing seamless agent-to-agent payments using native crypto primitives, enabling low-fee micropayments and usage-based monetization without custodians. It integrates identity through ERC-8004 for verified agent transactions and is BNB-native with compatibility toward EVM.

Who Are the Founders of b402?

b402 is initiated and maintained by Vistara Labs, an internet agent execution layer. Vistara Labs was selected for Binance Labs' sixth season incubation program in September 2023 and completed its Pre-Seed round of financing in November 2023, led by D1 Ventures and Factor.

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What Key Events Have There Been for b402?

On October 25, 2025, Vistara Labs announced bringing x402 to the BNB Chain via b402, supporting proxy payments using all BEP-20 tokens through the B402 relay acting as a trusted intermediary layer.

Project Announcements

Vistara Labs' in-house manufacturing facility, Zara, recently enabled seamless inter-agent payments using the x402 protocol, supporting one-click deployment of AI-driven Web3 micro-businesses such as content monetization.

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What is the Purpose of b402?

How Can I Participate in b402's Ecosystem?

What Sets b402 Apart from Competitors?

Is b402 Secure?

What are the Risks Associated with b402?

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