Agentic Payments & x402 Integration
Payment rails for AI agents: x402 integration, AP2, ACP, and MPP support, and the stablecoin settlement layer underneath, from a team that runs $100M+ of production payment infrastructure.
x402 integration and agent payment standards
x402 turns the long-dormant HTTP 402 status code into a working payment protocol: a server prices a request, the client pays in stablecoins, and the request completes. No API keys, no invoicing, no card forms. We integrate x402 on both sides — making your API payable so agents can buy access programmatically, and equipping your agents with wallets and payment logic so they can spend within policy.
The standards landscape is moving fast. x402, Google-led AP2, ACP, and MPP each cover a different slice of agent commerce, from mandates and authorization to checkout and settlement. We track them as they evolve and design integrations so the protocol layer stays swappable. You should not have to re-platform every time a specification revs.
Stablecoin settlement built for machine speed
Agent payments only work if settlement is fast, cheap, and final, which points directly at stablecoins: USDC on Base settles in seconds for fractions of a cent, which is why x402 uses it as a default rail. We build that settlement layer on the same architecture as our human-facing payment systems, with a double-entry ledger, idempotent orchestration, and continuous reconciliation, because a fraction-of-a-cent machine payment deserves the same correctness as a remittance.
The difference is volume and autonomy. Agents transact far more often than humans and nobody reviews each payment, so we add spend policies, per-agent budgets, anomaly detection, and kill switches. Your finance team gets an auditable ledger of everything every agent spent, and a way to stop any of it instantly.
Why CodeDecoders for agentic payments
This is the intersection of two things we already do in production. On the payments side, our stablecoin settlement infrastructure has processed $100M+ across 100,000+ transactions with roughly 5-second settlement. On the AI side, we build LLM-driven systems with tool use and long-horizon reliability. Agentic payments is not a pivot for us; it is the two halves of our practice meeting.
Because the standards are young, most engagements start small: one API made payable, or one agent given a wallet with strict limits. We instrument everything, prove the economics with real transactions, and expand from evidence rather than from a whitepaper. That keeps the bet cheap while the ecosystem settles.
Engagement model
A typical first engagement is a two-to-four-week integration: x402 middleware in front of your API, or a payment-capable agent on your side, with a real settlement ledger and spend controls from day one. We quote fixed prices for defined scopes, and you own all of the code.
For teams making a bigger bet on agent commerce, we design the full stack — protocol handling, wallets, settlement, treasury, and reporting — and run it with you. Retainers cover standards churn: as x402, AP2, ACP, and MPP evolve, we keep your integration current so your product does not fall behind the specification.
Protocols
Settlement
Agents & backend
Common questions
What is x402 and why does it matter?+
x402 is an open protocol, introduced by Coinbase, that uses the HTTP 402 status code to let clients — including AI agents — pay for web resources in stablecoins as part of the request itself. It removes API keys, subscriptions, and manual billing from machine-to-machine commerce. It matters because agents cannot fill in card forms; they need payments native to the protocols they already speak.
How long does an x402 integration take?+
Making an existing API x402-payable typically takes two to four weeks, including a real settlement ledger, spend controls, and monitoring rather than just the middleware. Giving an agent the ability to pay is a similar scope. Full agent-commerce stacks with treasury and multi-standard support are phased over a few months.
Do we need our own crypto infrastructure to accept agent payments?+
No. Settlement happens in stablecoins, but facilitators handle verification and settlement, and we build the wallet, custody, and off-ramp layer around your preferences, including converting to fiat so your books stay in dollars. You need good accounting more than crypto expertise, and we build the accounting in.
How do we stop an agent from overspending?+
Policy, not hope. We implement per-agent budgets, per-transaction caps, allowlisted counterparties, velocity limits, and human approval above configurable thresholds, enforced in the payment layer rather than in the prompt. Every payment lands in a double-entry ledger, so finance can audit spend and kill switches take effect instantly.
Which standards do you support besides x402?+
We work across the current landscape: x402 for HTTP-native payments, AP2 for mandates and authorization, ACP for agent checkout flows, and MPP. Our integrations isolate the protocol layer from settlement, so you can adopt whichever standard wins without rebuilding the money movement underneath.
Building agentic payments? Let's scope it.
We scope engagements in days, not weeks. Send a few lines about your project and we respond within 24 hours.
Let's build something extraordinary together.
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