# Services from devx-x402-tools.nextill-pos.workers.dev on Zero

> devx-x402-tools.nextill-pos.workers.dev serves 8 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/devx-x402-tools.nextill-pos.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/devx-x402-tools.nextill-pos.workers.dev/health.json

## Services

- [DevX Agent Tools – Web Page Reader (Markdown)](https://www.zero.xyz/c/devx-agent-tools-web-page-reader-markdown-7a058528/llms.txt): $0.002/call via x402. Fetches any public web page and returns its content as clean Markdown, along with extracted links, title, word count, and status metadata.
- [DevX Agent Tools – Multichain USDC Balance Checker](https://www.zero.xyz/c/devx-agent-tools-multichain-usdc-balance-checker-8c371b93/llms.txt): $0.01/call via x402. Returns USDC and native token balances for a crypto address across one or more EVM/Solana chains, paid per-call via x402 USDC on Base.
- [DevX ERC-20 Token Safety Pre-Check](https://www.zero.xyz/c/devx-erc-20-token-safety-pre-check-2ce4130b/llms.txt): $0.005/call via x402. Analyzes an ERC-20 token contract address for security risks, detecting blacklist/bot-list functions, proxy patterns, privileged functions, and returning an overall risk level
- [DevX Domain DNS & Email Security Audit](https://www.zero.xyz/c/devx-domain-dns-email-security-audit-6b1fad0e/llms.txt): $0.003/call via x402. Performs a DNS lookup and email security audit for a domain, returning SPF/DMARC records, MX records, DNSSEC status, and a hygiene score.
- [DevX Agent Tools – Web Link & SEO Metadata](https://www.zero.xyz/c/devx-agent-tools-web-link-seo-metadata-080f493a/llms.txt): $0.001/call via x402. Fetches a URL and returns its title, description, OpenGraph tags, icons, RSS/Atom feeds, and final resolved URL as structured JSON for $0.001 USDC per call
- [DevX Agent Tools – Crypto Address Validation](https://www.zero.xyz/c/devx-agent-tools-crypto-address-validation-0c8b80fb/llms.txt): $0.01/call via x402. Validates a cryptocurrency address string and returns its type, encoding, address family, and validity across Bitcoin, Ethereum, and other chains
- [DevX Agent Tools – Payment Request Generator (EIP-681/BIP21/Solana Pay)](https://www.zero.xyz/c/devx-agent-tools-payment-request-generator-eip-681-bip21-solana-pay-b8405fe9/llms.txt): $0.01/call via x402. Generates a standards-compliant crypto payment request URI (EIP-681, BIP21, or Solana Pay) with an accompanying QR code SVG for a given recipient address, token, amount, and chain.
- [DevX Agent Tools – On-Chain Payment Verification](https://www.zero.xyz/c/devx-agent-tools-on-chain-payment-verification-dd65fd93/llms.txt): $0.01/call via x402. Verifies that a specific blockchain transaction hash represents a valid USDC payment, returning confirmation count, transfer amounts, recipient, and whether a minimum threshold was met.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)