AgentSAPI - Base Onchain Data API (x402)

Per-call Base onchain and SEC data API sold over x402 (HTTP 402, USDC on Base, payTo 0x381cdbb664608bf7b1dd4f9403a572c1c57332c2). Address labels from the open eth-labels dataset (104,209 entries; mostly generic category tags such as token-contract/exchange rather than named entities, and unknown addresses return label:null while still being charged per call), plain-language Base transaction explanation, funding-cluster / sybil analysis, CCTP cross-chain USDC burn-mint tracking, historical onchain alerts plus paid alert subscriptions by webhook or Telegram, and US SEC 8-K material-event filings