Pricing State API — structured public SaaS pricing snapshots for agents

Pricing State API

Closed catalog of public SaaS and cloud pricing pages. Each listed vendor is fetched on a ~6 hour schedule in a real browser, extracted into one JSON shape (plan names, prices, currency, billing period, printed price text, features when present, snapshot time), and diffed for detected plan/price/billing-period changes. Not a live scrape-any-URL service and not unpublished or negotiated rates. Discover slugs free at GET /api/monitors. Paid current-state and change-history calls cost 0.01 USDC on Base via x402 v2. No API key.

Monitored pricing sources (33)

Free endpoints

GET /api/monitors — list every monitored vendor and its last-checked status
GET /api/healthz — service health
GET /api/site/pricing/{slug} — limited website preview, not the paid payload
GET /api/openapi.yaml / GET /api/openapi.json — the full API spec

Paid endpoints — $0.01 USDC per call

GET /api/monitors/{slug} — full structured pricing for one vendor
GET /api/monitors/{slug}/changes — that vendor's recorded pricing changes, newest first

Payment is made via the x402 protocol: 0.01 USDC on Base per paid request, settled per call with no account or subscription.