# Services from synthr.online on Zero

> synthr.online serves 6 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/synthr.online
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/synthr.online/health.json

## Services

- [Synthr Cyber Stack Brief](https://www.zero.xyz/c/synthr-cyber-stack-brief-230a3299/llms.txt): $0.005/call via x402. Analyzes a software dependency stack against real OSV, EPSS, and KEV vulnerability data to produce a prioritized security risk brief for autonomous agents
- [Synthr Cyber Dependency Audit](https://www.zero.xyz/c/synthr-cyber-dependency-audit-9a6ce439/llms.txt): $0.005/call via x402. Audits a list of software dependencies for known vulnerabilities using OSV, EPSS, and KEV data, detecting malicious packages and returning prioritized findings with agent-actionable recommendations.
- [Synthr Cyber Security Intelligence](https://www.zero.xyz/c/synthr-cyber-security-intelligence-d1c7a912/llms.txt): $0.005/call via x402. Provides agent-native cybersecurity intelligence including vulnerability data (OSV, EPSS, KEV), dependency audits, stack security briefs, and web reconnaissance for packages and ecosystems.
- [Synthr Cyber Patch Advisor](https://www.zero.xyz/c/synthr-cyber-patch-advisor-b4ba0b96/llms.txt): $0.005/call via x402. Returns prioritized patch guidance, patch commands, and code changes for a given package and optional CVE, using OSV, EPSS, and KEV vulnerability data.
- [Synthr Cyber Vulnerability Intelligence](https://www.zero.xyz/c/synthr-cyber-vulnerability-intelligence-4ad0ced9/llms.txt): $0.005/call via x402. Queries real-time CVE/vulnerability data enriched with EPSS exploit probability scores and CISA KEV (Known Exploited Vulnerabilities) status for prioritized security triage
- [Synthr Cyber - Cybersecurity Intelligence & Advice](https://www.zero.xyz/c/synthr-cyber-cybersecurity-intelligence-advice-afad288a/llms.txt): $0.005/call via x402. Provides AI-native cybersecurity intelligence by combining OSV vulnerability data, EPSS exploit probability scores, and CISA KEV data to deliver prioritized security advice, dependency audits, and threat reconnaissance for developer stacks.

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)