# Services from project-api-gamma-sable.vercel.app on Zero

> project-api-gamma-sable.vercel.app serves 28 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/project-api-gamma-sable.vercel.app
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/project-api-gamma-sable.vercel.app/health.json

## Services

- [CMS NPPES NPI Registry Provider Search](https://www.zero.xyz/c/cms-nppes-npi-registry-provider-search-56212499/llms.txt): $0.01/call via x402. Searches the CMS NPPES NPI Registry for healthcare providers by name, NPI number, organization, location, or taxonomy, returning slim JSON results with a UI link.
- [SEC EDGAR Submissions by CIK](https://www.zero.xyz/c/sec-edgar-submissions-by-cik-74801b66/llms.txt): $0.01/call via x402. Retrieves SEC EDGAR submission history and entity metadata for a given company CIK number, returning recent filings and a UI link.
- [NHTSA Vehicle Recalls Lookup](https://www.zero.xyz/c/nhtsa-vehicle-recalls-lookup-bf8d6da2/llms.txt): $0.01/call via x402. Retrieves NHTSA vehicle recall data for a specific make, model, and year, returning slim JSON with a UI link.
- [Project API – arXiv Preprint Search](https://www.zero.xyz/c/project-api-arxiv-preprint-search-e2a5e34b/llms.txt): $0.01/call via x402. Searches arXiv preprints using a free-text query and returns slim JSON with abstract and PDF links, gated behind a $0.01 USDC micropayment per call.
- [GLEIF LEI Legal Entity Lookup](https://www.zero.xyz/c/gleif-lei-legal-entity-lookup-37b2327a/llms.txt): $0.01/call via x402. Looks up legal entity identity information from the GLEIF database by LEI code or name, returning slim JSON with a UI link.
- [NSF Awards Search API](https://www.zero.xyz/c/nsf-awards-search-api-0b33bee3/llms.txt): $0.01/call via x402. Search National Science Foundation (NSF) award records by keyword, organization, or award ID, returning slim JSON results with UI links.
- [USASpending Awards Search API](https://www.zero.xyz/c/usaspending-awards-search-api-2042cf8b/llms.txt): $0.01/call via x402. Search and retrieve US federal government contract and grant award records from USASpending.gov, filtered by date range, NAICS code, award type, and awarding agency.
- [NWS Active Weather Alerts by State](https://www.zero.xyz/c/nws-active-weather-alerts-by-state-6d201e4c/llms.txt): $0.01/call via x402. Returns active National Weather Service (NOAA) weather alerts for a specified US state, filtered by optional criteria such as event type, severity, urgency, and status.
- [Federal Register Documents Feed](https://www.zero.xyz/c/federal-register-documents-feed-6e4601a3/llms.txt): $0.01/call via x402. Fetches searchable Federal Register documents (rules, notices, Executive Orders) with slim JSON and HTML links, paid per-call via USDC on Base.
- [PubMed Bibliographic Search via NCBI eSearch](https://www.zero.xyz/c/pubmed-bibliographic-search-via-ncbi-esearch-549c5f6d/llms.txt): $0.01/call via x402. Searches the NCBI PubMed database for biomedical literature and returns a slim JSON list of matching article IDs plus a UI link, paid per call via USDC on Base.
- [ClinicalTrials.gov Studies Search API](https://www.zero.xyz/c/clinicaltrials-gov-studies-search-api-ea01d6c9/llms.txt): $0.01/call via x402. Searches ClinicalTrials.gov for clinical studies matching a keyword term, returning slim JSON results with UI links, paid via USDC on Base.
- [OpenAlex Works Search via Project API](https://www.zero.xyz/c/openalex-works-search-via-project-api-5a43b240/llms.txt): $0.01/call via x402. Search academic works (papers, articles, books) from the OpenAlex dataset via a paid x402 endpoint, returning slim JSON results with a UI link.
- [OpenFDA MAUDE Device Adverse Events Feed](https://www.zero.xyz/c/openfda-maude-device-adverse-events-feed-fabe59bf/llms.txt): $0.01/call via x402. Searches and retrieves FDA MAUDE medical device adverse event reports via a paid x402 micropayment API
- [Wikidata SPARQL Query API (Paid)](https://www.zero.xyz/c/wikidata-sparql-query-api-paid-cd158851/llms.txt): $0.01/call via x402. Executes SPARQL SELECT/ASK queries against Wikidata and returns bounded JSON results plus a UI link, paid per call via USDC on Base.
- [OpenFDA Drug Adverse Events Feed](https://www.zero.xyz/c/openfda-drug-adverse-events-feed-079463df/llms.txt): $0.01/call via x402. Queries the FDA Adverse Event Reporting System (FAERS) via openFDA to retrieve drug adverse event records matching a search term, paid per call in USDC on Base.
- [OpenFDA Food Enforcement Recalls Search](https://www.zero.xyz/c/openfda-food-enforcement-recalls-search-edb9b7b2/llms.txt): $0.01/call via x402. Search and retrieve FDA food enforcement recall records via a paid OpenFDA proxy, returning slim JSON results plus a UI link.
- [NIH RePORTER Project Search](https://www.zero.xyz/c/nih-reporter-project-search-92f226f4/llms.txt): $0.01/call via x402. Search NIH-funded research projects via the NIH RePORTER database using free-text queries, returning slim project metadata with UI links.
- [World Bank Country Indicator Time Series API](https://www.zero.xyz/c/world-bank-country-indicator-time-series-api-a68482b1/llms.txt): $0.01/call via x402. Fetches World Bank v2 country-level indicator time series data for a given country and indicator code, returning slim JSON with a UI link.
- [FEMA Disaster Declarations Feed](https://www.zero.xyz/c/fema-disaster-declarations-feed-f642e11d/llms.txt): $0.01/call via x402. Returns FEMA disaster declaration records filterable by state, keyword, or search term, with a UI link for further exploration.
- [SEC Company Tickers Lookup](https://www.zero.xyz/c/sec-company-tickers-lookup-a5f3f42b/llms.txt): $0.01/call via x402. Returns SEC company ticker symbols, CIK numbers, and company titles with EDGAR UI links, filtered by optional free-text query.
- [US Treasury Debt to the Penny Feed](https://www.zero.xyz/c/us-treasury-debt-to-the-penny-feed-367fa253/llms.txt): $0.01/call via x402. Returns the current and historical US national debt figures (debt to the penny) from the Treasury Fiscal Data API, with pagination and date filtering support.
- [eCFR Full-Text Regulatory Search](https://www.zero.xyz/c/ecfr-full-text-regulatory-search-65aec424/llms.txt): $0.01/call via x402. Searches the Electronic Code of Federal Regulations (eCFR) by keyword, agency, or date range and returns matching regulatory content with links to the official UI.
- [USGS Earthquake Events Feed](https://www.zero.xyz/c/usgs-earthquake-events-feed-4079f540/llms.txt): $0.01/call via x402. Returns recent USGS earthquake events as slim GeoJSON features filtered by time range, magnitude, and result count
- [ERIC Education Literature Search](https://www.zero.xyz/c/eric-education-literature-search-e47dd62d/llms.txt): $0.01/call via x402. Searches the ERIC (Education Resources Information Center) database for education research literature, returning slim JSON results with a UI link, via a paid x402 API.
- [Europe PMC Life Science Article Search](https://www.zero.xyz/c/europe-pmc-life-science-article-search-89b286e1/llms.txt): $0.01/call via x402. Searches the Europe PMC database for life science and biomedical articles, returning slim JSON results with UI links and open-access IDs
- [SAM.gov Contract Opportunities Feed](https://www.zero.xyz/c/sam-gov-contract-opportunities-feed-ee88bb50/llms.txt): $0.01/call via x402. Fetches filtered SAM.gov federal contract opportunities as slim JSON with UI links, paid per call via USDC on Base.
- [NOAA CO-OPS Water Levels & Tide Predictions](https://www.zero.xyz/c/noaa-co-ops-water-levels-tide-predictions-348c1690/llms.txt): $0.01/call via x402. Fetches NOAA Center for Operational Oceanographic Products and Services (CO-OPS) water level and tide prediction data for a specified station, date range, and datum.
- [Project API - Paid Hello / Connectivity Check](https://www.zero.xyz/c/project-api-paid-hello-connectivity-check-77424ee5/llms.txt): $0.001/call via x402. Returns a smoke-test JSON response confirming the paid public-data API is reachable and payment is functioning correctly.

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)