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Annalist Web Readiness
x402
Annalist Web Readiness is a paid API for AI agents from api.annalist.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-16).
Returns a comprehensive agent-readiness report for a given website, including MCP/A2A endpoints, payment capabilities, llms.txt, robots.txt AI rules, Shopify store facts, and change history.
Price / call$0.005
Success—
StatusUnknown
How this service works
One site's agent readiness from our weekly census of 65,000 top sites: UCP and ACP agent checkout (its MCP endpoint, capabilities, payment handlers), A2A and MCP cards, a real llms.txt, robots.txt rules for 15 AI agents, x402, store and platform, Shopify store facts (ships-to countries, currency), and every change dated. A site not yet in the census is visited live. Measured by us. Signed.
Output
A structured, signed report covering: MCP endpoint URL and capabilities, ACP agent checkout support, A2A and MCP cards, presence and content of llms.txt, robots.txt rules for 15 named AI agents, x402 payment handler details, Shopify store metadata (ships-to countries, currency), platform/store type, and a dated changelog of all detected changes. For sites not yet in the weekly census, a live visit is performed.
Example use cases
Pre-integration agent capability check
“Before I build an integration, can you check shopify.com's agent readiness — does it have an MCP endpoint, ACP checkout, x402 support, and an llms.txt?”
Shopify store shipping and currency lookup
“I want to know which countries gymshark.com ships to and what currency their Shopify store uses — can you pull that from the agent readiness report?”
Monitoring site for new AI agent support
“Has patagonia.com added any new AI agent capabilities recently — like a new MCP endpoint or llms.txt — according to the latest readiness data?”
Technical details
Endpoint
GEThttps://api.annalist.dev/v1/web/readiness?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a comprehensive, signed, single-call assessment of a website's AI agent readiness — covering MCP, ACP, A2A, x402, llms.txt, and robots.txt — rather than scraping and parsing those signals yourself. Prefer this over manual inspection when you need structured, dated change history or Shopify store facts like shipping destinations and currency. Especially valuable for agents doing pre-integration due diligence or monitoring a portfolio of sites for new agent capabilities.
Side effects
- Domain not found or unreachable — live visit attempted but may time out
- Invalid or malformed domain parameter — returns error
- Site has no agent-readiness signals — returns empty/null fields
- Payment failure — x402 payment of $0.005 USDC required per call
- Census data may be up to one week stale for sites already in the index
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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