payment-infrastructure

TypeScript SDK for the π-SPI Business API.

Agent wallet infrastructure

A curated list of platforms, APIs, tools, standards, and learning resources for payments.

An ongoing & curated collection of awesome software best practices and techniques, libraries and frameworks, E-books and videos, websites, blog posts, links to github Repositories, technical guidelines and important resources about PCI DSS Compliance Standard in Cybersecurity.

Complyr is a private audit infrastructure for onchain business payments.

MCP-native pay-per-tool-call micropayments for AI agents (Solana + USDC + x402)

AI financial action infrastructure for African payment rails, with MCP tools, M-Pesa/Daraja integration, approvals, auditability, Redis rate limiting, PostgreSQL persistence, and a React operator dashboard.

Daily signals for agentic payment infrastructure, stablecoin rails, wallets, risk, compliance, and agent-executable commerce.

Infrastructure backend for crypto payment orchestration that enables merchants to create pay orders, generate route-backed payment details, and process on-chain transactions through a FastAPI + PostgreSQL service.

Bring Your Own Payment Gateway — a payment orchestration platform that lets you plug in any payment gateway (Stripe, PayPal, Razorpay, Adyen, Square, and more) and automate payment workflows through a unified interface. Route, switch, and manage multiple gateways from one platform.

Core platform

Post-quantum-ready compliance ledger for AI agent payments. AP2/ACP/x402-compatible SpendEnvelopes signed with ML-DSA-65 (FIPS 204). Built for the HKMA Quantum Preparedness Index era.

ReviveOS is an autonomous revenue recovery engine for Razorpay. When transactions fail from bank downtime, expired cards, or checkout dropouts, it uses multi-model AI (Gemini/OpenRouter) and strict safety guardrails to restore lost sales via instant rerouting and 1-tap WhatsApp payment links—recovering 80%+ of dropped GMV with zero customer spam.

Legacy callback vs. autonomous x402 settlement: a complexity comparison. Quantifies the 100% reduction in state management code when moving to programmable payment settlement.

ARIA - Adaptive Revenue Intelligence & Action. An ATLAS-class payment revenue-recovery system: maps payment dependencies as a graph, observes degradation, traces failures to root cause with evidence, selects bounded recovery actions, and measures recovered revenue against a graph-blind baseline. Deterministic, explainable, honestly evaluated.

💳 Enable instant fund transfers across West Africa with the π-SPI SDK for real-time payment processing and cross-border transactions.

Architecture examples for payout orchestration, stablecoin settlement, financial ledgers, and modern fintech infrastructure.

Precium — independent third-party profile of a public API surface, by API Evangelist. Precium is a South African fintech that provides local payment infrastructure for global merchants expanding into Africa. Its enterprise-grade platform handles payment processing across cards, instant EFT, mobile wallets and debit orders, plus intelligent smart ro

Three-stage migration from Lithic webhook rails to native x402 settlement on Base. Removes 100% of state management code. Benchmarked with Toxiproxy under African network conditions.

Depay — independent third-party profile of a public API surface, by API Evangelist. Depay (Depayments S.A.) is a Latin American cross-border payment infrastructure company that connects banks, wallets, and fintechs to the region's instant payment rails through a single API integration, enabling real-time international payments with settlement in lo