New listings
Trench Lessons: Solana research for payment-enabled AI agents
Trench Lessons joins the directory with paid research feeds and token risk signals on Solana. Explore its scope, payment evidence and activity coverage.
Ideas for an internet
that can pay.
Clear explanations. Practical guides. A closer look at agents, apps and the payments connecting them.
Latest articles
11 published guides
New listings
Agent Kiosk brings paid Base API tools and MCP access to the directory
Explore Agent Kiosk’s reviewed Base listing, its collection of paid agent tools and the difference between wallet receipts and customer usage.
New listings
agent-audit and page-read: two web tools with one shared payment recipient
Meet two reviewed agent tools for seller research and web-page extraction, and learn why their activity cards show a shared wallet total.
AI agents
From discovery to useful work: building AI agents with x402
A practical approach to discovering paid tools, checking x402 payment terms and connecting AI agents to useful APIs with clear spending controls.
New listings
Meet the new listings: Tanod, Horizon Pulse and Vextorium
Discover three newly listed x402 API projects for AI agents, with practical tools for web research, document processing and multichain data workflows.
Payments
x402 payments: from the first request to the final receipt
A practical walkthrough of how HTTP payment requirements, wallet authorization and settlement fit together.
Facilitators
Choosing an x402 facilitator: what builders should check
Compare facilitator compatibility, settlement behavior and recovery support before connecting a paid API.
AI agents
AI agents need payment budgets, not unlimited wallets
How to give an agent access to paid tools while keeping spending, permissions and retries under control.
Analytics
How to read multichain x402 payment activity
Understand transactions, buyers and settlement volume without confusing transfers with real product usage.
Protocol basics
What is x402? A practical guide to HTTP payments
Learn how x402 connects HTTP 402 payment requests with wallet-authorized payments for APIs, apps and software agents.
Agent economy
How AI agents can pay for APIs with x402
Understand how software agents can purchase paid API access with x402 while keeping spending limits and wallet permissions under control.