Questflow Facilitator for x402 Goes Multi-Chain — Now Open for Developer and Chain Integrations
From protocol to product: Questflow offers a full-stack x402 agent infrastructure — with SANTA as the first live integration
We’re excited to announce that Questflow’s x402 multi-chain facilitator is now live and open for integration. Developers and public chain ecosystems can now apply to onboard via this application form.
And this didn’t happen overnight — Questflow began working with Coinbase Devs as early as May, exploring and developing the x402 protocol. Here’s our original demo proving early collaboration.
Why a Multi-Chain Facilitator Matters
x402 unlocks autonomous payment interactions between agents, bots, and services — but many chains still lack EIP-3009 support, making integration complex.
Questflow solves that friction with a unified multi-chain facilitator layer that:
Abstracts away gas and token compatibility
Manages all relayer logic
Supports EIP-3009, and fallback mechanisms
Provides a plug-and-play API for developers
But there’s more: multiple facilitators mean decentralization, redundancy, and diversity of service.
In the future, different facilitator nodes can:
Specialize in different chains or apps
Offer differentiated fee models
Act as decentralized micro-service hubs for agents
And Questflow is not just a facilitator — it’s the full stack to x402-powered agent applications.
Questflow Powers the Full Agent Stack
While x402 defines the protocol layer, Questflow provides everything needed to activate it:
MAOP (Multi-Agent Orchestration Protocol) — to manage agent swarms and workflows
Agent Wallets — secure, x402-enabled identities for machines
Block-based Visual Builder (”the canvas”) — to compose, deploy, and monetize agent apps
This gives builders something no other x402 provider offers:
A complete path from infrastructure → application → user
Seamless plug-in of Questflow facilitator into agent logic
Composable UX + payment + execution in one stack
In short: new technology must come with new application layers — or it won’t unlock new assets, services, or user behavior.
Questflow offers the full surface area for creation.
For Developers
You don’t need to worry about:
Which chain supports EIP-3009
How to relay and settle x402 payments
How to design user UX for agent payments
Questflow gives you:
A single facilitator API
Unified support across chains
Composable UI and agent frameworks
Integration with Canvas and the app layer
With just a few steps, you can:
Launch bots that pay and charge on their own
Add payments to dashboards, automations, trading tools
Let users interact via chat, wallets, or visual flows
Please request your API key and follow this Dev Reference.
For Public Chain Ecosystems
x402 isn’t just for Base. If your L1 or L2 wants to:
Support agent-native micropayments
Add onchain monetization options for devs
Expand into agent economy infrastructure
To begin integration, please prepare:
Chain scan URL
RPC URL
Test ETH or Native gas token
Test stablecoin (EIP-3009 preferred, but alternatives are OK — just note in the form)
We’ll handle compatibility — and support your chain’s rollout.
Ecosystem Launch & First Application
S.A.N.T.A is the first live application to integrate with the Questflow Facilitator, already using it as a gateway to serve external agent requests. You can now interact through the S.A.N.T.A Canvas, bringing x402-based payment utilities to life.
This early integration showcases how a facilitator, paired with the full Questflow agent stack, can turn payments into usable, programmable workflows — and create real agent-based services for end users.
The Future Is Agent-to-Agent
Questflow is building the infrastructure, coordination, and application layers for the agent-powered economy. The real power of x402 comes when it’s paired with a modular agent architecture and a clear path to real user interaction.
S.A.N.T.A’s live integration is only the beginning — showing how payment, logic, and UI can fuse into one composable surface.
New technology isn’t enough.
It takes usable tools, intuitive entry points, and permissionless monetization — all of which we provide.
We invite builders, chains, and infra teams to join us in shaping the future of composable, agent-native value transfer.