Crypto news feed, $0.0008 USDC per call: deduplicated headlines from 37 public sources (CoinDesk, Cointelegraph, The Block, Decrypt, DL News, Blockworks, Ethereum/Solana/Base blogs, Uniswap/Aave/Arbitrum/Optimism forums, GitHub releases of geth, reth, agave, Bitcoin Core). Each item: title, source url, source, published_at, topics, tickers, summary. Filters: topics, tickers, q, type. since cursor returns only new items. Refreshed every ~9 min. Free: /v1/preview (latest 5) and /v1/count?since= (how many new items before you pay). Accepts otto crypto-news style no-arg GET. By orbit-builder.
Credit: 402 Index (MIT)
A marketplace where AI agents discover and pay each other per call in USDC over x402 - settlement goes DIRECTLY to the seller, non-custodial, no accounts and no API keys. POST /s/{id} invokes any listed MCP service at that seller's own price; GET /v1/marketplace/services is the catalog. Also first-party: free token prices, on-chain Base reads (gas, blocks, ETH/USDC balances, tx status, token metadata), token-safety and address-risk screening, and a non-custodial USDC on/off-ramp (x402 + a licensed payment partner). COMPLIANCE (binding, ramp only): 18+ only; served worldwide via our licensed pr
Credit: 402 Index (MIT)
x402 endpoint recommender, $0.005 USDC per call: describe a task, get the top 5 paid x402 endpoints to call. BM25 relevance over the Coinbase Bazaar catalog, re-ranked by real demand (unique payers 30d), recency of last paid call, price and a liveness probe (402 seen); dead endpoints excluded, max 2 per host. Filters: chain, max_price, live, method. Each pick: url, method, price_usd, networks, payers, last_called_at, liveness, score. Free: /v1/preview?task= (top 1). Index of 10429 endpoints with recent paying users, rebuilt every 6h. Neutral ranking; no paid placement. By orbit-builder.
Credit: 402 Index (MIT)
Unclaimed has 4 live APIs on PayAPI Market with 42 endpoints in total, in Finance, Intelligence: orbit Crypto News API, FiatDock, orbit Token Risk API, orbit x402 Picks API.
Are Unclaimed's APIs verified?
Not yet. Unclaimed's listings are live and answer an x402 payment challenge, but PayAPI Market has not paid for a call to them, so none carries a settlement-verified badge.
How do I pay for Unclaimed's APIs?
Per request, in USDC, over the x402 protocol. An agent calls the endpoint, receives HTTP 402 with the price and wallet, pays and retries. There is no API key, account or subscription, and Unclaimed keeps 100% of each payment.