# NFT Alpha — OpenSea Market Signals (RAEN x402)

> Real-time OpenSea market-signal metrics for watched NFT collection slugs for $0.02 USDC on eip155:8453: send { collection } or { collections[] } (<=10, or omit for all watched) to POST /api/nft-signal and receive 5-minute rolling listings, sales, bids, offers, sell-through, floor pressure and signal classifications (HIGH_DEMAND, UNDERPRICED_LISTING, BID_FRENZY, DUMP_WARNING, LOW_DEMAND). Pay per call via x402 — no API keys, no subscription. Results are recent buffered Stream data, not a floor-price oracle or profit forecast. Not financial advice. Free surfaces: GET /sample (output shape), GET /openapi.json, GET /pricing.md, GET /llms.txt, GET /docs, GET /about, GET /health, GET /.well-known/x402.json.

- **Domain**: `nft-alpha-x402.fly.dev`
- **Provider**: Royal Agentic Enterprises (https://nft-alpha-x402.fly.dev)
- **A2A protocol version**: 1.0
- **Kind**: paid_api
- **Live-responds (last probe)**: True
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 100%
- **Payment protocol**: x402 · ≥ $0.1
- **Wallet**: `0x7861db4efc14a1ed5dd8c96c528a3796560f1393`

## Skills
- **Paid OpenSea market-signal analysis per collection** — Explains how to buy POST /api/nft-signal ($0.02 USDC on eip155:8453): body { collection: slug } or { collections: [slugs] } (<=10) or omit for all watched colle
- **Free sample + contract preview** — Points to the free validation surfaces before any payment: GET /sample returns the output shape, GET /openapi.json carries the full contract, GET /pricing.md an
- **Machine-readable discovery surfaces** — Guides agents to this wall's free machine surfaces: /pricing.md, /llms.txt, /openapi.json, /docs, /about, /.well-known/x402.json (live 402 accepts), /.well-know

## URLs
- Agent card: https://nft-alpha-x402.fly.dev/.well-known/agent-card.json
- Page (HTML): https://agenstry.com/agents/nft-alpha-x402.fly.dev
- Documentation: https://nft-alpha-x402.fly.dev/pricing.md