The operating system for agentic commerce.
Research, architectures, risk controls, and implementation guides for payments initiated by AI agents.
Working definition
Agentic payments are transactions that AI agents prepare, authorize, initiate, or complete for a person or organization under explicit, enforceable constraints.
Read the definitive guideThe field in one map
Money moves last.
The hard problem is preserving authority and evidence across every system that acts before and after the rail.
Intent
Capture the principal’s goal and constraints.
Identity
Know the principal, agent, and counterparty.
Authority
Turn intent into an enforceable mandate.
Execution
Present the narrowest useful credential.
Settlement
Verify value movement on the chosen rail.
Assurance
Connect receipt, fulfillment, and recourse.
Research desk
Build from first principles.
Definitive guide
Agentic payments: the definitive field guide
A rigorous guide to agentic payments: what they are, how the stack works, which protocols matter, and what production systems must control.
System design
Reference architecture for agentic payments
A production reference architecture for agentic payments, from agent runtime and policy engine to credentials, rails, receipts, and reconciliation.
Assurance
Security and risk controls for agentic payments
Threat model and control framework for agentic payments: prompt injection, credential isolation, replay, fraud, compliance, disputes, and monitoring.
Implementation guide
How to build agentic payments without building a liability machine
A practical build sequence for agentic payments: scope the use case, model authority, isolate credentials, choose rails, add evidence, test failure, and launch safely.
Protocol index
No single protocol is the stack.
Compare each system by the responsibility it owns, the artifact it leaves behind, and the gaps another layer must fill.
Open the protocol mapREAPP thesis 01
“The model can plan. It should never invent permission.”
Production agentic payments separate adaptive planning from deterministic policy, isolate credentials from the model runtime, and bind every financial effect to reviewable evidence.
Study the authorization layerThe production test
Can your system explain the transaction after the happy path disappears?
Who authorized the exact order?
Which policy version allowed it?
Was value settled or only submitted?
What recourse remains for the principal?
The complete operating brief
Every layer. One field guide.
The landing page is the map; each route is a source-backed chapter. Start anywhere and follow the transaction from human intent to financial outcome.
Foundations
Define the category, follow the transaction lifecycle, and design the authority boundary before choosing infrastructure.
Agentic payments
A rigorous guide to agentic payments: what they are, how the stack works, which protocols matter, and what production systems must control.
LifecycleHow it works
Follow an agentic payment from user intent through policy, payment execution, settlement, fulfillment, refund, and audit evidence.
System designArchitecture
A production reference architecture for agentic payments, from agent runtime and policy engine to credentials, rails, receipts, and reconciliation.
Control planeAuthorization
How to turn user intent into enforceable mandates, spending policies, scoped credentials, and step-up approvals for agentic payments.
Protocols & rails
Place each protocol in the correct layer and compare the payment rails that actually move and settle value.
Protocols
Compare AP2, x402, MPP, MCP, UCP, ACP, and card-network approaches by responsibility, authority model, rail, evidence, and maturity.
Protocol briefGoogle AP2
A technical guide to Google’s Agent Payments Protocol (AP2), including mandates, human-present and delegated flows, payment-method neutrality, and system boundaries.
Protocol briefCoinbase x402
A technical guide to x402: the HTTP 402 payment flow, facilitators, stablecoin settlement, wallets, receipts, reversibility, and production controls.
Protocol briefCard networks
How Visa, Mastercard, and tokenized card credentials approach trusted agents, consumer intent, merchant recognition, and existing payment rails.
Decision guideChoosing a rail
Compare card, bank, and stablecoin rails for agentic payments by acceptance, credential model, settlement, reversibility, value size, and operations.
Risk & implementation
Turn bounded authority into operational controls, merchant interfaces, evidence, reconciliation, and recourse.
Security & risk
Threat model and control framework for agentic payments: prompt injection, credential isolation, replay, fraud, compliance, disputes, and monitoring.
Control mapCompliance
A role-based compliance map for agentic payments across custody, cards, stablecoins, AML, sanctions, privacy, consumer protection, and evidence.
Opportunity mapUse cases
A practical map of agentic payment use cases across paid APIs, procurement, retail, subscriptions, replenishment, and machine-to-machine services.
Implementation guideBuild guide
A practical build sequence for agentic payments: scope the use case, model authority, isolate credentials, choose rails, add evidence, test failure, and launch safely.
Merchant guideMerchant readiness
A merchant readiness guide for agent traffic, catalogs, checkout APIs, trusted-agent recognition, payment credentials, fraud, fulfillment, refunds, and support.
Research & reference
Track the market without confusing announcements for adoption, and keep terminology, sources, and methodology inspectable.
2026 landscape
A source-backed 2026 map of agentic payments across Google AP2, Coinbase x402, Cloudflare, Stripe, Visa, Mastercard, stablecoins, and merchant infrastructure.
About REAPP NETWORKMethodology
How REAPP NETWORK researches, sources, reviews, updates, corrects, and discloses commercial relationships in its agentic-payments coverage.
48 conceptsAgentic payments glossary
Precise definitions for mandates, credentials, protocols, rails, settlement, and assurance.
Open evidencePrimary source index
The official protocol, network, standards, security, and regulatory documentation behind the research.
Field guide · 2026
Design the authority before the payment.
Start with a complete transaction model, then choose the protocols and rails that fit it.
Open the build guide