x402-sdk
x402 Payment Protocol SDKs - Dead simple micropayments for APIs and AI agents
In the AI payments ecosystem
x402-sdk is an early-stage Python project in the AI payments / x402 ecosystem, focused on ai-agents, fastapi, langchain, micropayments. It currently has 2 GitHub stars and 1 forks, and sits alongside related tools like ai-agent-directory, x402-pay, langchain-x402, langchain-cerebrus-pulse, agoragentic-integrations, dna-x402.
Similar projects
Pay-per-use B2A discovery API for AI agents — built on x402 (USDC micropayments on Base)
Open-source x402 payment processor for AI agents. Sub-400ms settlement on Solana + 7 EVM chains. Let LLMs pay for APIs programmatically with USDC. npm: nory-x402
LangChain integration for x402 payments - let AI agents pay for APIs with USDC automatically
LangChain tools for Cerebrus Pulse — give AI agents real-time crypto intelligence (technical analysis, sentiment, funding rates) via x402 micropayments.
Public adapters and discovery catalog for Triptych OS (Agent OS): agent frameworks, MCP/A2A/x402 protocols, workflows, wallets, SDKs, and examples for execute-first routing, governed handoffs, and receipt-aware agent commerce.
DNA — Payment rails for AI agents. x402 micropayment protocol on Solana. Netting, transfer, stream settlement. Receipt anchoring on-chain.
More Micropayments projects
All Micropayments projects →
The agent-native LLM router for autonomous agents. 55+ models (8 free), <1ms local routing, USDC payments on Base & Solana via x402.
The AI agent with a wallet — spends USDC autonomously to get real work done. Apache-2.0, TypeScript.
DePIN for Vintage Hardware — Proof-of-Antiquity blockchain where old machines outmine new ones. AI-powered hardware fingerprinting, 15+ CPU architectures, Solana bridge (wRTC). $0 VC.
🚀 Curated list of x402 resources: HTTP 402 Payment Required protocol for blockchain payments, crypto micropayments, AI agents, API monetization. Includes SDKs (TypeScript, Python, Rust), examples, facilitators (Coinbase, Cloudflare), MCP integration, tutorials. Accept USDC payments with one line of code. Perfect for AI agent economy.
Client SDK for the Vybe x402 API. Pay-per-call USDC over HTTP and prepaid-credit WebSocket streaming for Vybe's Solana analytics API. Built for AI agents.
The financial operating system for AI agents. A single HTTP client that intercepts '402 Payment Required', routes across x402, L402, and MPP, persists credentials as recoverable assets, enforces per-envelope budgets, and emits a structured trace.
