# Services from blackhullsystems.com on Zero

> blackhullsystems.com 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/blackhullsystems.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/blackhullsystems.com/health.json

## Services

- [Blackhull Token Check](https://www.zero.xyz/c/blackhull-token-check-e3398385/llms.txt): $0.01/call via x402. Returns live on-chain measured facts and risk flags for a single Base network ERC-20 token contract address
- [Blackhull x402 Service Findings Report](https://www.zero.xyz/c/blackhull-x402-service-findings-report-f4063eb4/llms.txt): $0.008/call via x402. Returns a graded findings report (grade + flagged issues) for a specific x402 resource URL, covering payment concentration, demand patterns, and other risk signals
- [Blackhull Route: Best-Rated AI-Analysis Providers](https://www.zero.xyz/c/blackhull-route-best-rated-ai-analysis-providers-fcf29d68/llms.txt): $0.003/call via x402. Returns a ranked list of the best-rated x402 providers for a given capability category, filtered optionally by max price per call
- [Blackhull Top-Earning Agent Services](https://www.zero.xyz/c/blackhull-top-earning-agent-services-fd188bad/llms.txt): $0.005/call via x402. Returns a ranked list of the top-earning x402 agent services by category, showing payer counts and paid prices as of a specific date
- [Blackhull x402 Service Flag Checker](https://www.zero.xyz/c/blackhull-x402-service-flag-checker-1034a0c7/llms.txt): $0.003/call via x402. Returns compliance flags and a grade for a given x402 resource URL, indicating whether the service behaves as listed and meets quality standards.
- [Blackhull Agent-Economy Pack](https://www.zero.xyz/c/blackhull-agent-economy-pack-3b3b5a1d/llms.txt): $0.01/call via x402. Returns a curated directory snapshot of the x402 agent-economy ecosystem, listing active servers and their roles as of a given date

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

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