"Amazon RDS" matching MCP servers:

x402 Ads lets AI agents buy and verify ad placements with per-request USDC payments. Agents can discover inventory, submit campaign context, receive structured placement options, and pay through x402 without API keys or accounts. Built for autonomous promotion, attribution, and pay-per-action agent commerce.

Provides AI assistants with real-time access to Cardano DeFi data, including token, pool, wallet, swap, trade, OTC, and DCA information via Cardexscan's DEX scanner and aggregator.

A self-contained Rust MCP server for Polymarket that enables market discovery, exact order book queries, wallet analytics, realtime market state, and simulated fills, with optional gated trading.

A Model Context Protocol (MCP) server for Substrate blockchains, written in Rust and interfacing the subxt crate.

Enables AI agents to programmatically purchase physical and virtual goods from platforms like Amazon and Shopify using stablecoins, without the need for virtual debit cards or browser automation.