# Vokko

> Multi-protocol capability index for the agent web.

Vokko probes a host for UCP, AP2, TAP, MCP, A2A, x402, MPP, llms.txt, and OpenAPI. We do not complete checkout, do not send PAYMENT-SIGNATURE to the target, and do not invent well-knowns.

## API

- [Host report (cached, free)](https://vokko.eu/api/v1/hosts/{domain}): GET JSON protocol matrix. Presence cached 24h; callability 15 minutes.
- [Host report (live)](https://vokko.eu/api/v1/hosts/{domain}?refresh=1): paywalled re-probe. Same path as humans at /pricing (Bearer vok_…) or x402 V2 PAYMENT-SIGNATURE to *Vokko*, never to the target.
- [Host report (live example)](https://www.vokko.eu/api/v1/hosts/allbirds.com?refresh=1): concrete payable URL. GET as-is for a 402.
- [Directory](https://vokko.eu/api/v1/index): indexed hosts.
- [Origin-owner report](https://vokko.eu/report/{domain}): HTML or `Accept: application/json`. Cached free. `?refresh=1` uses the same paywall as the API. Missing spec fields, not grade letters.

## Discovery

- [Methodology](https://vokko.eu/methodology): cell → spec → probe → what we never do.
- [A2A agent card](https://vokko.eu/.well-known/agent-card.json)
- [x402 discovery (Vokko's own paywall)](https://vokko.eu/.well-known/x402)

## Identity

User-Agent: VokkoBot/0.1 (+https://vokko.eu/methodology; multi-protocol capability probe)