Provenance x402 Trust Index · Methodology · Open data

x402 endpoints offering OpenSea data — resale-authorization audit

2 machine-payable (x402) endpoints in the public discovery registries exhibit reseller signatures referencing OpenSea while hosted off OpenSea's own domains. Resale-authorization status: unknown — suspected unauthorized resale, verification recommended. Any of these endpoints may hold a legitimate redistribution license.

Context: OpenSea's keyed API developer terms restrict resale.

2suspected reseller endpoints

0high-confidence signatures (≥70/100)

2with paid activity in the last 30d

0live-402 confirmed by probe

Scan of 23,376 unique x402 endpoints on 2026-07-05, sources: Coinbase Bazaar + GoPlausible registry. Payment counts come from the registries' own published 30-day quality signals. Evidence bullets are automated signature matches — see the methodology for signal definitions, false-positive modes, and the dispute path. If you are on OpenSea's API or trust team and want the full evidence set or a re-verification, open an issue — it's free.

Endpoint	Price/call	Calls 30d	Signature	Evidence (automated signature matches)
https://cc0.company/api/store/agent-services/cc0pedia/invoke — cc0.company — x402 agent-services marketplace on Base (USDC): CC0 image generation, market-data digests, and third-party agent tools. This endpoint: cc0pedia — look up any CC0 crea… pays to 0x1484…c2c5 on eip155:8453 · via bazaar	$0.0100	3 3 payers	medium · 58/100 not probed	references X / Twitter, OpenSea (via "twitter" in schema) but is hosted on cc0.company, not the brand's domain input schema is a bare passthrough (query) — consistent with forwarding to an upstream API $0.0100/call ≈ 2.0× X / Twitter's public ~$0.005/call — consistent with cost-plus resale margin
https://nft-alpha-x402.fly.dev/api/nft-signal — NFT Alpha: OpenSea NFT market signals for an OpenSea collection slug. Body: { collection: string, collections?: string[] }. Returns listing/sale/bid counts, price stats, sell-throu… pays to 0x9b8a…f72f on eip155:8453 · via bazaar	$0.0500	6 3 payers	low · 47/100 not probed	references OpenSea (via "opensea" in description) but is hosted on nft-alpha-x402.fly.dev, not the brand's domain hosted on generic infrastructure (fly.dev) while referencing premium first-party data

Framing note: every row above is a statistical signature match, published so that OpenSea's own team — the only party who can actually verify authorization — can review it. Nothing on this page asserts that any listed operator is acting unlawfully or in breach of any agreement.