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.
MCP server for 402 Index: discover 15,000+ paid API endpoints across L402, x402, and MPP
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.
Trust and quality infrastructure for AI agents. 225+ quality-scored capabilities, SQS scoring, EU AI Act support.
x402 micropayments for AI agents - no wallets, no blockchain, just credits.
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.
x402 payment middleware for Cloudflare Workers — POC 1 of the Stable402 reference implementation series
Dart implementation of the x402 payment protocol. 🎯
Multi-chain settlement cost router for the x402 payment protocol. Selects the cheapest or fastest blockchain for each AI agent micropayment.
The first universal payment wallet for AI Agents. USDC on Base.
MCP-native pay-per-tool-call micropayments for AI agents (Solana + USDC + x402)
Payment gateway for MCP servers — monetize your tools with one wrapper. Supports x402, MPP, and Stripe.
Governed wallet for AI agents on Stellar with x402, MPP, policy controls, and auditable spend
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