# nsgoods — x402 service suite

> Front door for four pay-per-call x402 services on Base (USDC): signed responses, a public
> hash-chain proof, and a free preview on each. This hub is a directory only — it does not take
> payments. Pay per call at each service's own endpoint.

## Services
- Kraken Crypto Signals (markets) — https://signals.nsgoods.org — Signed BUY/SELL/HOLD trading signals + confidence for Kraken pairs. Paid $0.01/call.
    - manifest: https://signals.nsgoods.org/.well-known/x402 · free preview + /health · signed + hash-chain proof
- Agent Trust Oracle (agent-infra) — https://trust.nsgoods.org — ERC-8004 agent reputation / trust scores (0-100) for agent-to-agent decisions. Paid $0.005/call.
    - manifest: https://trust.nsgoods.org/.well-known/x402 · free preview + /health · signed + hash-chain proof
- CMC Regime Skill (markets) — https://regime.nsgoods.org — Deterministic market regime (TREND_UP/DOWN/CHOP/RISK_OFF) + strategy spec. Paid $0.01/call.
    - manifest: https://regime.nsgoods.org/.well-known/x402 · free preview + /health · signed + hash-chain proof
- Extractability Oracle (web/GEO) — https://schema.nsgoods.org — GEO extractability score (0-100) for any web page: can AI crawlers quote it? Paid $0.01/call.
    - manifest: https://schema.nsgoods.org/.well-known/x402 · free preview + /health · signed + hash-chain proof
- Solar Legality Oracle (open-data) — https://solar.nsgoods.org — US 50-state plug-in / balcony solar legality — status, utilities, legislation. Paid $0.005/call.
    - manifest: https://solar.nsgoods.org/.well-known/x402 · free preview + /health · signed + hash-chain proof

## Hub endpoints
- GET / — catalog landing (human + JSON-LD Organization/ItemList)
- GET /health — live up/down of all four services
- GET /.well-known/x402 — aggregated discovery index (points to per-service manifests)
- GET /openapi.json — hub API description

## Payment
All services use the x402 protocol on Base mainnet, settled in USDC. An agent calls a paid
endpoint, receives HTTP 402 with price + instructions, submits a signed USDC payment, and retries.