payments

Molt is an open protocol for letting an AI agent make bounded purchases through disposable, single-use payment credentials. The repo includes a clear quickstart, MCP integration, a threat model, and a working test-mode demo.

OpenSpender gives AI agents a self-custodial wallet so they can pay for model and tool calls with per-request, daily, and total caps. It connects through MCP and supports clients like Claude Code, ChatGPT, Codex, and opencode, with itemized spend and a catalog of x402 and MPP services.

On-demand Docker containers for AI agents, paid per hour with USDC on Base. The page shows a full API flow, pricing tiers, prebuilt images, internet access options, and quick-start examples for both shell and JavaScript.

Open-source CLI and agent infrastructure for handling paid API requests. It detects 402 payment challenges, signs stablecoin payments with a local wallet, supports MCP, and includes a payment debugger plus catalog tooling.

TypeScript SDK for AI agents and backends that connect to Squid Pay, letting agents propose payments or trades while the owner wallet remains the final signer.

An open agent-identity protocol with a shipped reference implementation, TypeScript SDK, conformance test vectors, and protocol docs for identity, discovery, payments, and audit flows.

Authoryze is an MCP-native payment layer for AI agents that issues single-use virtual cards for approved purchases and adds spending limits, merchant rules, approvals, and audit trails.

Pay-per-fetch China data and analysis API for AI agents, with x402 micropayments, MCP tools, and live endpoint docs.

Stripe’s llms.txt entry surfaces core docs, API reference, SDKs, webhooks, Checkout, Connect, and a note to always check the latest package version before installing.