Postfix pipe + x402 client: send headers only to a paid API; server classifies From+Subject with OpenRouter; stamp X-CTJ-Spam-Check. No SpamAssassin, no body, no local heuristic scoring.
my-x402-postfix-email-antispam-header-check-app is an early-stage Shell project in the AI payments / x402 ecosystem, focused on coinbase-x402, email, machine-payments, openrouter. It currently has 0 GitHub stars and 0 forks, and sits alongside related tools like faremeter, X402-audio-to-audio, sample-agentcore-cloudfront-x402-payments.
A universal framework designed to allow agents and other utilities to transparently make machine payments using web infrastructure.
Transmits signed USDC payments over sound using a custom OOK audio modem with Goertzel detection. Compresses x402 handshakes to 138 bytes, settling on Base through 36 seconds of 2400 Hz beeping.
AWS payment demo of x402 using Bedrock AgentCore, Strands SDK, and CloudFront.
A payments protocol for the internet. Built on HTTP.
Self-healing infrastructure for AI agent payments. 90.3% auto-recovery.
Daydreams is a set of tools for building agents for commerce
The best way to monetize AI applications & MCP, using x402, CDP Smart Wallets & Paymaster
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Cloudera CDP SDK for Java