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Add 2s.io to Ecosystem #274

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Expand Up @@ -38,6 +38,7 @@ x402 is an emerging open standard from the Coinbase ecosystem focused on safer,
- [Strale](https://strale.dev) - Business data & compliance APIs for AI agents. 250+ quality-scored capabilities (company data, VAT validation, sanctions screening, KYB) across 27 countries with x402 payment support. [MCP server](https://www.npmjs.com/package/strale-mcp) available.
- [Hedera and the x402 Payment Standard](https://hedera.com/blog/hedera-and-the-x402-payment-standard/) - Hedera ecosystem overview of x402-style programmable payments for applications and AI agents.
- [CardZero](https://cardzero.ai) - Smart-contract wallet (ERC-4337) for AI agents on Base mainnet, USDC. Buyer-side x402 support via `POST /v1/x402/pay`. Owner-controlled spending rules (per-tx limit, daily cap, whitelist, freeze) enforced on-chain. Also runs first known production deployment of ERC-8004 + ERC-8183.
- [2s.io](https://2s.io) - Pay-per-call JSON API for AI agents. 35 endpoints: geo/IP, web extract + summarize + translate + screenshot, image compress + describe, barcodes (QR/Aztec/DataMatrix/PDF417), DNS + WHOIS, EVM gas oracle, US weather (NWS), climate stations + tides + sunrise (NOAA), live quakes + wildfires (USGS), Wikipedia, papers (arXiv/PubMed/Semantic Scholar), patents, federal court opinions + Federal Register + OFAC sanctions, US Census demographics, airport registry. Sub-cent to $0.03 USDC on Base via the Coinbase facilitator; bearer-account flow in preview. ([Discovery](https://2s.io/api/directory) | [OpenAPI](https://2s.io/openapi.json) | [.well-known/x402](https://2s.io/.well-known/x402) | [llms.txt](https://2s.io/llms.txt))

### Facilitators & Networks
- [Coinbase Hosted Facilitator (Base)](https://docs.cdp.coinbase.com/x402#offload-your-infra)
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