# Services from api.robotsshop.io on Zero

> api.robotsshop.io 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/api.robotsshop.io
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.robotsshop.io/health.json

## Services

- [Swartzpath — Legal Open-Access Paper Resolver](https://www.zero.xyz/c/swartzpath-legal-open-access-paper-resolver-83cbb1c7/llms.txt): $0.01/call via x402. Resolves a paper DOI or title to a legal open-access PDF URL via Unpaywall/OpenAlex, returning nothing for paywalled papers
- [RobotsShop x402 Trust Index — Monitor Subscribe](https://www.zero.xyz/c/robotsshop-x402-trust-index-monitor-subscribe-06d905d5/llms.txt): $10/call via x402. Registers a seller's x402 endpoint for daily monitoring and trust scoring by the RobotsShop Trust Index, returning a subscription ID and status.
- [RobotsShop Trust Index Search](https://www.zero.xyz/c/robotsshop-trust-index-search-9ccabd2b/llms.txt): $0.01/call via x402. Search and filter ranked x402 API endpoints by trust score, grade, spam status, and domain to discover high-quality paywalled services
- [RobotsShop Trust Index — Live URL Re-Probe](https://www.zero.xyz/c/robotsshop-trust-index-live-url-re-probe-9890174f/llms.txt): $0.01/call via x402. Re-probes a specified public x402 endpoint URL in real-time to fetch its current trust and compliance status
- [SpookFiles Declassified Records Search](https://www.zero.xyz/c/spookfiles-declassified-records-search-39df84b8/llms.txt): $0.01/call via x402. Full-text search over already-public declassified and leaked document archives (GIFiles, Podesta emails, Cablegate, Epstein documents, ICIJ), returning doc IDs, snippets, and source URLs.
- [RobotsShop Trust Index — SpookFiles Entity Search](https://www.zero.xyz/c/robotsshop-trust-index-spookfiles-entity-search-b3ccaf98/llms.txt): $0.01/call via x402. Searches and retrieves scored entities from the SpookFiles index — already-public leaked/declassified records with doc ID, snippet, and source URL.
- [RobotsShop Trust Index — Top-N Endpoints](https://www.zero.xyz/c/robotsshop-trust-index-top-n-endpoints-d132991b/llms.txt): $0.01/call via x402. Returns the top-N API endpoints ranked by their RobotsShop trust/quality score, with optional filtering by minimum score and spam exclusion
- [RobotsShop Trust Index — Latest Snapshot](https://www.zero.xyz/c/robotsshop-trust-index-latest-snapshot-2fa6299c/llms.txt): $0.1/call via x402. Returns the latest cached snapshot metadata for the RobotsShop Trust Index of x402 API endpoints

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)