An open SDK for agentic payments. Let AI agents make payments, hold funds, and move money across chains with policy enforcement and human approval built in.
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Updated
May 7, 2026 - Rust
An open SDK for agentic payments. Let AI agents make payments, hold funds, and move money across chains with policy enforcement and human approval built in.
A curated list of protocols, specs, SDKs, and tools powering the emerging agentic commerce stack.
Golang Interface for Machine Payments Protocol by cp0x
An open-source, serverless and agentic design for pay-per-use AI content generation using USDC stablecoin payments via x402, featuring browser wallet and autonomous agent flows on AWS.
Security middleware for x402 agentic payments — PII redaction, spending policy, and replay detection before blockchain commit
This will be used as the repository for the demo with x402 and fastset
Bipa CLI — payment rails for AI agents. Pre-built binaries and managed installer.
Production reference for agentic commerce: protocols (ACP, AP2, x402, MCP), stablecoin rails, agent skills, and the merchant playbooks specs leave out — refunds, multi-chain settlement, catalog discovery, fraud, jurisdiction, receipts. Maintained by Cryptorefills.
MCP server for 402 Index: discover 15,000+ paid API endpoints across L402, x402, and MPP
Trust and quality infrastructure for AI agents. 225+ quality-scored capabilities, SQS scoring, EU AI Act support.
x402 debugger CLI for Base. bazaar-check, validate, explain, reconcile — read-only, local, Sepolia + mainnet.
x402 micropayments for AI agents - no wallets, no blockchain, just credits.
MCP-native pay-per-tool-call micropayments for AI agents (Solana + USDC + x402)
x402 payment middleware for Cloudflare Workers — POC 1 of the Stable402 reference implementation series
Wash-filtered intelligence layer for the x402 ecosystem. Real-time service catalog, category price benchmarks, wash trading detection, and time-series analytics across Base, Solana, Polygon, and Arbitrum. Free public data, open methodology, AI-native API and MCP server for autonomous agents. Built on agentic payments and stablecoin micropayments.
Dart implementation of the x402 payment protocol. 🎯
The first universal payment wallet for AI Agents. USDC on Base.
Multi-chain settlement cost router for the x402 payment protocol. Selects the cheapest or fastest blockchain for each AI agent micropayment.
Payment gateway for MCP servers — monetize your tools with one wrapper. Supports x402, MPP, and Stripe.
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