# Services from ylk.one on Zero

> ylk.one serves 7 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/ylk.one
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/ylk.one/health.json

## Services

- [ylk.one x402 Rails Snapshot](https://www.zero.xyz/c/ylk-one-x402-rails-snapshot-f9a0efd7/llms.txt): $0.02/call via x402. Returns a live, sanitized JSON snapshot of x402 payment rail metrics including pace, median ticket size, top receivers by dollar volume, and recent settlements.
- [ylk.one x402 Wallet Trust Vet](https://www.zero.xyz/c/ylk-one-x402-wallet-trust-vet-95453708/llms.txt): $0.02/call via x402. Returns a trust verdict and on-chain settlement analytics for any x402 payTo wallet address on Base, including organic/concentrated/fragile/solo/opaque classification, settled revenue, buyer count, and top-buyer dependency.
- [ylk-brief](https://www.zero.xyz/c/ylk-brief-082cd579/llms.txt): $0.08/call via x402. Returns a composite due-diligence brief for a single x402 payTo address, bundling trust vetting, business profile, market pulse, and spike data in one paid call.
- [ylk.one Day-over-Day x402 Rail Shift](https://www.zero.xyz/c/ylk-one-day-over-day-x402-rail-shift-e6756fcc/llms.txt): $0.01/call via x402. Returns day-over-day delta metrics for the x402 payment rail including total volume and transaction count changes, and lane-level UP/DOWN movements across commerce, inference, and dev segments.
- [ylk.one x402 Spike Detector](https://www.zero.xyz/c/ylk-one-x402-spike-detector-05399eca/llms.txt): $0.01/call via x402. Returns live x402 settlement rail spike data: current $/hr and tx/hr vs 24h baseline, last completed hour summary, and every ≥2.5× activity spike in the past 24 hours with named driver
- [ylk-robinhood-brief](https://www.zero.xyz/c/ylk-robinhood-brief-31ebeb8e/llms.txt): $0.08/call via x402. Returns a composite brief combining Robinhood Chain (4663) x402 catalog lag metrics and per-address fingerprint/trust analysis in a single paid call.
- [Robinhood Chain x402 Catalog Lag Report](https://www.zero.xyz/c/robinhood-chain-x402-catalog-lag-report-d92d560c/llms.txt): $0.05/call via x402. Returns a comparison of CDP catalog rows versus on-chain payTo addresses for Robinhood Chain (4663), surfacing off-catalog x402-ready earners and metered micro-band USDG lag metrics.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)