{"api":"v1","generated_at":"2026-09-15T18:45:37.013Z","licence":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/","attribution":"TOLL, with a link to the page cited"},"description":"TOLL's public data, version 1. Free, no key. Every body names the quality snapshot it was built from; add ?at=<stamp> (for example 2026-09-12T15-30Z) to pin a Ledger body to the latest snapshot at or before that minute, the same resolution as a pinned page.","endpoints":{"series":{"url":"https://tollindex.com/api/v1/series","body":"one point per quality snapshot: endpoints with counters, calls, sum of unique payers, Pearson correlation, whether the snapshot changed"},"headline":{"url":"https://tollindex.com/api/v1/headline","body":"the Ledger's readings on one snapshot"},"concentration":{"url":"https://tollindex.com/api/v1/concentration","body":"the distributions of calls and unique payers, top endpoints and top wallets"},"bursts":{"url":"https://tollindex.com/api/v1/bursts","body":"every candidate burst window with its measurements and verdict, the rule, and the endpoints in passing windows"},"single_payer":{"url":"https://tollindex.com/api/v1/single-payer","body":"every endpoint with at least the rule's calls from exactly one payer"},"validation":{"url":"https://tollindex.com/api/v1/validation","body":"the latest finished daily sweep, state by state and check by check"},"delistings":{"url":"https://tollindex.com/api/v1/delistings","body":"every endpoint absent from every registry at the last pull, raw and confirmed"},"endpoint":{"url":"https://tollindex.com/api/v1/endpoint/{slug}","body":"one endpoint's record: listing, accepts, counters, validation history, presence events"}},"stamps":"a stamp is a snapshot's UTC minute with hyphens for colons, 2026-09-12T15-30Z; the series body lists every snapshot's stamp","method":"https://tollindex.com/ledger/method#json"}