Add Agentprobe — 13-probe agentic commerce readiness scorer

[unitedideas]

What is Agentprobe?

Agentprobe is a free public tool that scores any seller URL across 13 agentic commerce readiness checks:

• llms.txt / OpenAPI / ai-plugin.json / MCP presence
• commerce.json with payment rail declaration
• Machine-readable catalog (/api/v1/catalog)
• Quote endpoint (/api/v1/quote)
• Checkout endpoint (/api/v1/checkout)
• Explicit payment rail declaration (UCP/ACP/Stripe)
• Refund/contact metadata
• Unsupported-rail declaration (x402/SPT/MPP correctly marked)
• No fake/unsubstantiated x402/SPT/MPP claims
• Fulfillment proof endpoint

Why it fits this list

The "Developer Tools → UCP Validation & Testing" section already includes UCP Checker and UCP Lighthouse for schema/payload validation. Agentprobe covers the broader agentic commerce readiness surface — not just UCP schema compliance, but whether an AI agent can actually complete a purchase end-to-end.

Live

• Probe any URL: https://agentprobe.fly.dev
• API: GET /api/probe?url=<url>
• MCP endpoint: /mcp (probe_site tool)
• Registry/leaderboard: https://agentprobe.fly.dev/registry
• Badge: /badge/{domain}.svg

Currently certifying 4 production seller sites at 100–110/110.