# Services from joi-presign.joi-agent.workers.dev on Zero

> joi-presign.joi-agent.workers.dev serves 13 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/joi-presign.joi-agent.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/joi-presign.joi-agent.workers.dev/health.json

## Services

- [Joi Contract Profile & Risk Analyzer](https://www.zero.xyz/c/joi-contract-profile-risk-analyzer-1312f4b8/llms.txt): $0.01/call via x402. Returns a security profile for a smart contract address including proxy type, ownership, upgrade controls, verification status, and risk findings.
- [Joi Pre-Sign Transaction Explainer](https://www.zero.xyz/c/joi-pre-sign-transaction-explainer-6eb35884/llms.txt): $0.01/call via x402. Fetches and decodes a blockchain transaction by hash, returning a plain-English summary with decoded call data, token transfers, approvals, NFT moves, and a risk assessment.
- [Joi Token Profile](https://www.zero.xyz/c/joi-token-profile-33add342/llms.txt): $0.01/call via x402. Returns a comprehensive risk and ownership profile for an ERC-20 token contract, including name, symbol, decimals, supply, proxy/upgrade status, owner powers, and on-chain risk findings.
- [Joi Pre-Sign X402 Risk Checker](https://www.zero.xyz/c/joi-pre-sign-x402-risk-checker-c3fe7065/llms.txt): $0.01/call via x402. Analyzes an X402-enabled URL to decode its payment terms and flag risks before a client pays or signs anything
- [Joi Pre-Sign Risk Checker](https://www.zero.xyz/c/joi-pre-sign-risk-checker-d4ae7217/llms.txt): $0.01/call via x402. Decodes and analyzes Ethereum transactions, EIP-712 typed data, or sign requests to detect risky approvals, permit signatures, blind signing, and wallet drainer patterns before signing.
- [Joi ENS / Basename Resolver](https://www.zero.xyz/c/joi-ens-basename-resolver-f7ef8929/llms.txt): $0.01/call via x402. Resolves an ENS name or Basename to its Ethereum address (and vice versa), returning resolver metadata and reverse-verification status.
- [Joi Email Domain Security Checker](https://www.zero.xyz/c/joi-email-domain-security-checker-cdeb09ab/llms.txt): $0.01/call via x402. Checks a domain's email security posture by analyzing MX, SPF, DKIM, DMARC, BIMI, MTA-STS and TLS-RPT records, returning a risk score and actionable findings.
- [Joi Presign — Crypto Asset Price Feed](https://www.zero.xyz/c/joi-presign-crypto-asset-price-feed-d743f4eb/llms.txt): $0.01/call via x402. Returns the current USD price for a supported crypto asset (ETH, BTC, USDC, etc.) sourced from Chainlink on-chain data feeds.
- [Joi Pre-sign Signature Verifier](https://www.zero.xyz/c/joi-pre-sign-signature-verifier-7221cb6d/llms.txt): $0.01/call via x402. Verifies a personal_sign message, EIP-712 typed data, or raw digest against an Ethereum address using ecrecover (EOA) or ERC-1271 (smart contract/EIP-7702 wallet)
- [Joi Sanctions Screen](https://www.zero.xyz/c/joi-sanctions-screen-58d1037c/llms.txt): $0.01/call via x402. Checks an EVM address against the OFAC SDN sanctions list and returns match details, entity names, and sanction programs
- [Joi URL Metadata Fetcher](https://www.zero.xyz/c/joi-url-metadata-fetcher-f91a39b9/llms.txt): $0.01/call via x402. Fetches and returns rich metadata for any HTTPS URL, including title, description, Open Graph tags, robots rules, security headers, redirects, and page stats.
- [joi-presign robots.txt checker](https://www.zero.xyz/c/joi-presign-robots-txt-checker-1988948f/llms.txt): $0.01/call via x402. Fetches and parses the robots.txt (and llms.txt) of any given URL, returning per-bot crawl permissions and sitemaps
- [joi-presign Web Reader](https://www.zero.xyz/c/joi-presign-web-reader-5f6d302c/llms.txt): $0.01/call via x402. Fetches and extracts readable content from a given HTTPS URL, returning title, markdown, metadata, and link counts for AI agent consumption.

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)