AdPrompt x402 Gateway Upgrades

By: Behkish Nassirzadeh, PhD, Co-Founder and CTO

In February, AdPrompt announced its entrance into the x402 ecosystem, deploying a selection of agentic capabilities from the AdPrompt intelligence suite to the x402 marketplace. Using Base's Layer 2 infrastructure and the x402 payment standard, this integration lets businesses pay per-use for advanced marketing functions without subscriptions, contracts, or traditional checkout flows. Readers can learn more about the underlying protocol in the earlier "x402 Explained" Q&A post with CTO Behkish Nassirzadeh.

Since launch, x402.adprompt.io has grown from a proof of concept into a fuller pay-per-call marketing gateway, logging nearly 200 transactions to date. AdPrompt rebuilt the gateway from a four-endpoint x402 V1 prototype into a more complete x402 V2 implementation featuring a larger catalog, persistent results, async job handling, and AdPrompt-branded reports.

What Changed With x402 V2

Protocol upgrade: x402 is built around the HTTP 402 Payment Required status code, letting an API state a cost, accept proof of payment, and then execute the request, enabling agents and apps to pay directly over HTTP without API keys or manual checkout.

Standardization: V2 standardizes network and asset identifiers, aligns with modern HTTP header conventions, supports a cleaner extension model, and lays groundwork for richer discovery, wallet-based access, and multi-chain payment flows.

Async delivery: Instead of holding requests open, the client now gets an immediate response with a report URL after payment; work finishes in the background and the URL serves the completed result.

Flexible output: Each result is available as an HTML report, downloadable JSON, or exportable PDF, improving usability for both humans and agents.

Expanded catalog: The engine set has grown to include brand analysis, competitive research, campaign strategy, image generation, video generation, content generation, and creative asset tools.

Discoverability: The catalog is now listed on x402scan, an emerging index for x402-gated APIs, so agents and developers can find AdPrompt's endpoints, check pricing/metadata, and call the right tool on demand.

The larger vision is that marketing work becomes fully callable: an agent can understand a business, plan a campaign, generate creative, and retrieve a branded report, paying only for the specific work it needs.

Here is a look at the AdPrompt Agent Gateway: