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 - [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.
+- [melis.ai](https://agents.melis.ai) - 22 pay-per-call utility tools for AI agents: web scraping (ScrapePay), markdown conversion (MarkdownOpt), prompt injection scoring (PromptGuard, MEMSCRUB), URL safety (LinkRisk, LinkSafe), schema validation (SchemaGate, xAudit), transactional notifications (NotifyRelay email/telegram/webhook), embeddings (EmbedPay), vector memory (MemoryServe), image moderation (ImageGuard), PDF rendering (DocConvert-PDF, PDF Render), wallet trust scoring (KYA Oracle), agent context relay (IntentFlow), multi-agent chain firewall (Loopwall). Canonical RAG pipeline: ScrapePay → MarkdownOpt → EmbedPay → MemoryServe → MEMSCRUB. No accounts, no API keys. USDC on Base. MCP wrapper: `npx @melis-ai/x402-tools-mcp`. ([catalogue](https://agents.melis.ai), [npm](https://www.npmjs.com/package/@melis-ai/x402-tools-mcp), [RAG pipeline](https://agents.melis.ai/pipelines/rag))
 
 ### Facilitators & Networks
 - [Coinbase Hosted Facilitator (Base)](https://docs.cdp.coinbase.com/x402#offload-your-infra)