AI feeds on human content, but creators get nothing in return. That changes with v402, a new payment framework built on Coinbase's x402 protocol, designed for the AI era.
Voyage is reimagining GEOFi beyond the data layer, building the full-stack infrastructure AI indexing compensation needs. As the last mile of GEOFi, v402 makes Voyage the first and only place where human content stays valuable in the age of AI.
What is v402?
x402 is the internet-native payment protocol that enables fast, low-cost, and AI-friendly payments over HTTP.
v402 builds on top of it with multi-language SDK support and multi-chain capabilities, creating a programmable payment framework that allows AI agents, websites, and APIs to handle payments and settlements automatically during the citation process, with every transaction recorded onchain.
In simple terms, v402 is like giving every AI crawler a wallet. No API keys, no subscriptions, just real-time, trustless micropayments across the web. 🌍
What problem does v402 solve?
The modern web wasn't built for the AI indexing economy. As agents start to consume and transact at scale, three core issues emerge:
- Uncompensated access: AI agents extract human-created data without attribution or payment.
- High-friction payments: Legacy APIs rely on centralized keys and manual billing, unfit for automation.
- Fragmented standards: Every platform has its own logic, blocking interoperability.
v402 solves this by introducing a unified API and SDK layer built on x402, enabling agents and platforms to perform verifiable, low-cost micropayments directly, turning content access into an onchain financial interaction.
How v402 works
v402 connects three key layers of the AI web:
Index Platforms (AI / Crawlers / Visitors)
Detect 402 responses, sign payments, and access protected data through the v402_index_client SDK.
Content Providers (Websites / APIs)
Protect and monetize their data using the v402_content_provider SDK.
Facilitator Layer
Verifies, settles, and records every transaction on-chain via the x402 protocol.
The Payment Flow
In practice, here's how a v402 payment flow works:
- The AI agent requests data → the provider replies with HTTP 402 Payment Required.
- The agent checks the request and signs a payment authorization using its wallet.
- The payment is verified by v402 and settled on-chain (ETH, Solana, Polygon…)
- The provider confirms, unlocks the content, and logs proof of payment.
Build with v402
Developers can integrate v402 in minutes using standard APIs and SDKs:
Integrate the SDKs
- Use
v402_index_clientfor agents and crawlers - Use
v402_content_providerfor websites and APIs
Authenticate with keys
- Each participant uses its public key as identity
- Every request is signed and verified cryptographically (Auth 3.0)
Enable payments
- Payments are executed through x402 payment tokens
- Every interaction is recorded onchain for full transparency
With multi-language SDKs, multi-chain support, and standardized APIs, developers can turn any API into an onchain service with automated payments, built for AI agents, powered by x402.