A toolkit for building micropayment-gated MCP servers
payflow is an early-stage TypeScript project in the AI payments / x402 ecosystem, focused on base, ethereum, evm, mcp. It currently has 6 GitHub stars and 2 forks, and sits alongside related tools like x402-deploy, tdm-integration-kit, TDM-Agent-Integration-Kit, piprail, Agent402, gold-402.
A toolkit for building micropayment-gated MCP servers.
| Package | Description | Docs |
|---|---|---|
| @chainbound/payflow-mcp | Local MCP server for generating micropayments | docs |
| @chainbound/payflow-sdk | TypeScript SDK for integrating micropayments into your MCP server | docs |
MIT
Turn any API or MCP server into a paid service with x402
Developer integration tools for adding TDM payments to AI agents, apps, and workflows. CLI, MCP server, and copy-paste examples
Developer integration tools for adding TDM payments to AI agents, apps, and workflows. CLI, MCP server, and copy-paste examples
x402 (HTTP 402 Payment Required) SDK + MCP server: let any API charge for itself and any AI agent pay for itself, USDC & stablecoins across EVM, Solana & 8 more chain families, in a couple of lines. Backendless, no fee, self-custodial, paid straight to your wallet. TypeScript, MIT.
500+ pay-per-call web tools + skill packs for AI agents — every one tested, priced, and settled on-chain. Paid in USDC over x402 on 8 chains, or free via proof-of-work on the pure-CPU tools. Self-hostable, MCP-native, deterministic. Plus the open x402 index (Find / Route / Leaderboard).
⚡ The gold standard for x402 resources. 300+ projects, SDKs, tools, facilitators, and ecosystem data for the HTTP 402 Payment Required protocol. Curated by 24K Labs.
Open Source AI trading agent that operates autonomously across 1000+ markets - Polymarket, Kalshi, Binance, Hyperliquid, Solana DEXs, 5 EVM chains. Scans for edge, executes instantly, manages risk while you sleep. Agent commerce protocol for machine-to-machine payments. Self-hosted. Built on Claude.
Drop-in OpenAI Python client with transparent x402 payment support.
TypeScript Interface for Machine Payments Protocol
Drop-in OpenAI Typescript client with transparent x402 payment support.
Production-ready x402 facilitator server.
Rust SDK for the x402 payment protocol.