{"id":"probe.l5.endpoint_live.v1","title":"Live endpoint rate","unit":"ratio (0–1)","chain_set":"eip155:8453 (Base)","window":"most recent sweep","definition":"Share of a uniform random sample of registrations whose declared service endpoint returned a successful response to a plain GET.","method":"Uniform random sample over the registry's token id space, then an HTTP probe with an 8 s timeout, at most 2 redirects, a 256 KB body cap, and no execution of anything returned.","excludes":["Registrations whose only endpoint is a shared hosting platform's submit URL — that proves the platform is up and nothing about the agent. Those cap at L4."],"does_not_assert":["That the agent behind the endpoint works, only that something answered."],"source":"AFG-Pulse liveness probe","since":"2026-09-05","valid_until":"2026-10-13","superseded_by":"probe.l5.endpoint_live.v2","revisions":[{"date":"2026-10-13","what":"Superseded by probe.l5.endpoint_live.v2. This text said at most 2 redirects and that sink-only registrations cap at L4; the code followed 3 redirects, read only the first 4 listed entries, stopped at the first live one, and applied the sink cap only when the sink came before a live endpoint. v2 reads up to 8 web endpoints in any order, never probes a sink, and counts a completed protocol handshake as live."}],"body_sha256":"02889bac1e2e80a22771061dfed9385b2c54cc2a7bce51526af1f3e0b8d5a778","url":"https://agenticfinancegraph.com/def/probe.l5.endpoint_live.v1","ladder":"https://agenticfinancegraph.com/ai-agent-liveness-methodology-l0-l9-ladder","license":"https://creativecommons.org/licenses/by/4.0/","attribution":"Agentic Finance Graph — https://agenticfinancegraph.com"}