# x402r Documentation

## Docs

- [Architecture](https://docs.x402r.org/contracts/architecture.md): System architecture, payment flows, and contract relationships
- [Audits](https://docs.x402r.org/contracts/audits.md): Audit status, trust assumptions, and security roadmap for x402r contracts
- [AlwaysTrueCondition](https://docs.x402r.org/contracts/conditions/always-true.md): Allow anyone to call an action with no restrictions
- [Combinators](https://docs.x402r.org/contracts/conditions/combinators.md): Compose conditions with And, Or, and Not logical operators
- [Custom Conditions](https://docs.x402r.org/contracts/conditions/custom.md): Build your own condition contracts for specialized authorization logic
- [EscrowPeriod](https://docs.x402r.org/contracts/conditions/escrow-period.md): Time-lock condition that records authorization time and enforces escrow windows
- [Freeze](https://docs.x402r.org/contracts/conditions/freeze.md): Block payment release when frozen, with configurable freeze/unfreeze authorization
- [Conditions Overview](https://docs.x402r.org/contracts/conditions/overview.md): Pluggable condition system for flexible payment authorization and state tracking
- [PayerCondition](https://docs.x402r.org/contracts/conditions/payer.md): Singleton condition that restricts operator actions to the payment payer address
- [ReceiverCondition](https://docs.x402r.org/contracts/conditions/receiver.md): Singleton condition that restricts operator actions to the payment receiver address
- [StaticAddressCondition](https://docs.x402r.org/contracts/conditions/static-address.md): Restrict operator actions to a specific designated address via immutable check
- [Configuration Examples](https://docs.x402r.org/contracts/examples.md): Complete configuration examples for common x402r use cases
- [Factories](https://docs.x402r.org/contracts/factories.md): Factory patterns, CREATE2 deployments, and deterministic addresses
- [Fee System](https://docs.x402r.org/contracts/fees.md): Additive modular fee architecture with protocol and operator fee layers
- [Gas Costs](https://docs.x402r.org/contracts/gas-costs.md): Simulated gas measurements for every on-chain operation, with per-plugin overhead breakdown
- [License](https://docs.x402r.org/contracts/license.md): BUSL-1.1 licensing terms, permissions, and restrictions for x402r smart contracts
- [Overview](https://docs.x402r.org/contracts/overview.md): Introduction to x402r smart contracts and their relationship to commerce-payments
- [PaymentOperator](https://docs.x402r.org/contracts/payment-operator.md): The core payment operator contract with pluggable conditions and fee management
- [Commerce Payments](https://docs.x402r.org/contracts/periphery/auth-capture-escrow.md): AuthCaptureEscrow and ERC3009PaymentCollector — the base layer from commerce-payments
- [Periphery Overview](https://docs.x402r.org/contracts/periphery/overview.md): Supporting contracts that extend the PaymentOperator: escrow, refund requests, token collectors, and more
- [ReceiverRefundCollector](https://docs.x402r.org/contracts/periphery/receiver-refund-collector.md): Pulls funds from receiver for post-escrow refunds
- [RefundRequest](https://docs.x402r.org/contracts/periphery/refund-request.md): Manages refund request lifecycle and approvals independent of operator implementation
- [RefundRequestEvidence](https://docs.x402r.org/contracts/periphery/refund-request-evidence.md): On-chain evidence submission for refund disputes
- [AuthorizationTimeRecorder](https://docs.x402r.org/contracts/recorders/authorization-time.md): Records authorization timestamp for time-based conditions
- [RecorderCombinator](https://docs.x402r.org/contracts/recorders/combinator.md): Chain multiple recorders into a single operator slot for composite state tracking
- [Custom Recorders](https://docs.x402r.org/contracts/recorders/custom.md): Build your own recorder contracts for specialized state tracking
- [Recorders Overview](https://docs.x402r.org/contracts/recorders/overview.md): State recording system for tracking payment lifecycle events
- [PaymentIndexRecorder](https://docs.x402r.org/contracts/recorders/payment-index.md): Index payments by sequential count for on-chain queries and multiple refund requests
- [What is x402r?](https://docs.x402r.org/index.md): x402r adds escrow deposits, refund windows, and dispute resolution to HTTP-native payments
- [Roadmap](https://docs.x402r.org/roadmap.md): Current progress and upcoming features for the x402r protocol and SDK
- [Arbiter Guide](https://docs.x402r.org/sdk/arbiter.md): Review refund requests, approve or deny refunds, and distribute fees.
- [Create x402r Client](https://docs.x402r.org/sdk/create-client.md): Client factory, role presets, and configuration reference.
- [Arbiter Setup](https://docs.x402r.org/sdk/delivery-arbiter.md): Build a service that evaluates responses and releases funds.
- [Merchant Setup](https://docs.x402r.org/sdk/delivery-merchant.md): Configure forwardToArbiter() to send responses to the arbiter for evaluation.
- [Delivery Protection](https://docs.x402r.org/sdk/delivery-protection.md): Automated quality verification for every transaction.
- [Deploy an Operator](https://docs.x402r.org/sdk/deploy-operator.md): Deploy a PaymentOperator with escrow, freeze, and dispute resolution in one call
- [Examples](https://docs.x402r.org/sdk/examples.md): Runnable examples for every SDK operation.
- [Merchant Guide](https://docs.x402r.org/sdk/merchant.md): Accept a payment into escrow, check state, and release funds.
- [Overview](https://docs.x402r.org/sdk/overview.md): TypeScript SDK for adding escrow, refunds, and dispute resolution to x402 payments
- [Payer Guide](https://docs.x402r.org/sdk/payer.md): Check payment state, request a refund, freeze a payment, and submit evidence.
- [Escrow vs Exact](https://docs.x402r.org/x402-integration/comparison.md): Detailed comparison of escrow and exact payment schemes
- [Escrow Scheme Specification](https://docs.x402r.org/x402-integration/escrow-scheme.md): Technical specification for the x402 escrow payment scheme
- [X402 Protocol Overview](https://docs.x402r.org/x402-integration/overview.md): How x402r extends the x402 HTTP payment protocol with escrow capabilities