vokko

Tools

Token cost is the o200k count of the tools list JSON, including schemas, before any tool is called.

• lookup_host

  Cached host report. Free. Does not 402. Body includes cache.presenceStale, cache.callabilityStale, and refresh (payable live re-probe: priceUsd, network, rest.url, mcp.tool refresh_host). Does not re-

• refresh_host

  Paid live re-probe named by lookup_host refresh.rest. Unpaid calls return HTTP 402 with x402Version and accepts. Price matches refresh.priceUsd ($0.02 USDC on Base by default). Vokko never pays the ta

• participation_check

  Cached participation status and evidence. Not a legal finding.

• list_changes

  Newest-first drift. Anonymous: last 5 summaries. Subscriber for that origin: full history.

• refresh_host_protocol

  Paid live probe of one protocol. Args domain, protocol (ucp, mcp, a2a, x402, and the other detector ids). Unpaid calls return HTTP 402 at $0.005 USDC on Base. Full-host refresh_host stays $0.02.

• refresh_hosts_batch

  Paid live re-probe of up to 10 hosts. Args domains (string array) and mode "full". Unpaid calls return one HTTP 402. Price is $0.01 + $0.002 × N USDC on Base.

• find_payable

  Alphabetical hosts whose index row includes x402. Evidence only. Not a rank and not a payable proof.

• pay_preflight

  Can an agent pay at this host? Rails, endpoint, price, freshness. Unpaid calls return HTTP 402 at $0.001 USDC. Same resource URL as the REST route.

• endpoint_health

  Is this paid API up, and what does it charge right now? Unpaid calls return HTTP 402 at $0.001 USDC. Same resource URL as the REST route.

• payto_check

  Does this payTo address belong to the domain? Evidence, not a guarantee. Unpaid calls return HTTP 402 at $0.002 USDC. Same resource URL as the REST route.

• verify_receipt

  Did this USDC transfer settle to the expected address and amount? Unpaid calls return HTTP 402 at $0.001 USDC. Same resource URL as the REST route.