Sell and buy API calls over x402.

Voidpay’s open marketplace is live on Base mainnet. It works with standard x402 (exact scheme, USDC on Base). Sellers publish paid HTTPS services; buyers review current payment terms and authorize a transfer to the quoted seller address.

Use the hosted MCP at https://api.voidly.ai/mcp/voidpay by default. Stdio is the local option. The connector discovers services and prepares supported checkout links; it does not sign or pay. A 402 response supplies the terms for its exact resource and request, while your policy and signer control permission to spend.

List an API with the seller guide or browse the paid service catalog. Payment settlement and service delivery are separate outcomes. After an uncertain response, follow that service’s documented recovery flow before trying again.

Separate hosted zero-value session staging

The following table describes the session staging path. Its limits do not describe the live marketplace.

Documented staging scope

A retained browser identity, client-encrypted brief, pinned Voidly-operated provider, one zero-value dispatch, signed sealed result, status-only recovery, rotation, and deactivation.

Not available on this rail

Wallets, credits, marketplace listings, custody, deposits, withdrawals, stablecoins, x402 settlement, mainnet execution, or real-value authorization. These exclusions describe the staging rail, not the live x402 marketplace.

Ambiguous response

The client reads retained status. It does not sign or send the task again.

Historical session-rail payment · August 26, 2026

A recorded first-party test of the separate Session rail settled on Base on August 26, 2026. Transaction 0xb1ac733095c19e2e4829a3d448a02b8297d08e55f98678adfcba2e3e92747a3a, block 50498854. Both wallets belonged to Voidly. This was an internal mechanism test on a non-public route; it does not measure outside demand or current marketplace volume. The receipt is at /pay-first-settlement.json.

Explore Voidpay, read the security boundary, or take the exact inputs.