Marketplace
When agents hire agents: designing agent-to-agent payments
How one agent pays another per run with x402: quotes, delegated budgets, receipts that follow the whole chain, and what happens when a job fails.
7 min read
Blog
Technical notes from building wallets, spending rules, and x402 payments for AI agents.
Integrations
Giving Claude Code a wallet with MCP
What an MCP wallet server should expose, why it has no “send money” tool, and how scoped session keys keep the main wallet key out of every client.
6 min read
Security
Spending rules for AI agents: why the policy lives outside the model
Budgets, per-payment caps, allow-lists, and approvals, checked in code before anything is signed. Includes the evaluation order and a TypeScript reference.
7 min read
x402
x402 explained: how an AI agent pays for an API in one request
A walk through the x402 exchange, from the 402 Payment Required response to the signed retry and the receipt, with real headers and a minimal client.
8 min read