# Vextorium US Grants Search

> Vextorium US Grants Search is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-15).

Search and filter US federal grant opportunities from Grants.gov by keyword, agency, and status

## Facts

- Endpoint: POST https://api.vextorium.com/v1/us-grants?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-us-grants-search-0c9b977c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_E1DOqlVZix9XhJCaaIvZv

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

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability vextorium-us-grants-search-0c9b977c -d '<json body>'
```

Example prompt: Search Grants.gov for open federal grants related to artificial intelligence from the National Science Foundation — show me up to 20 results.

## When to prefer this

Use this endpoint when you need to discover or monitor US federal grant opportunities programmatically, especially when filtering by keyword, agency, or status (open/upcoming/all). It aggregates Grants.gov data in a structured, machine-readable format suitable for agent workflows, avoiding manual web scraping. Prefer this over general web search when you need structured grant metadata (dates, numbers, agency codes) for downstream processing or comparison.

## Known failure modes

- No grants found matching the search criteria — returns empty calls array with total 0
- Invalid status enum value — request rejected with schema validation error
- Agency name not recognized or misspelled — returns empty results rather than error
- Grants.gov source temporarily unavailable — may return error or stale data
- Limit set too high may result in slow or truncated responses

## How this service works

US federal grant opportunities from Grants.gov: title, number, agency, open and close dates, status and link; search by keyword (AI, energy, health...) and agency (NSF, NIH, DOE...), open or forecasted.

## Output

Returns a list of matching federal grant opportunities, each with title, grant number, agency name, agency code, open/close dates, current status, and a direct link to the Grants.gov detail page, plus total count of matching results and the echoed search parameters.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer"
  },
  "agency": {
   "type": "string"
  },
  "search": {
   "type": "string"
  },
  "status": {
   "enum": [
    "open",
    "upcoming",
    "all"
   ],
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "calls": [
   {
    "link": "https://www.grants.gov/search-results-detail/361050",
    "open": "10/02/2026",
    "close": "05/28/2027",
    "title": "Centers for Structural Biology of HIV and Other Infectious Diseases (U54 Clinical Trial Not Allowed)",
    "agency": "National Institutes of Health",
    "number": "RFA-AI-28-031",
    "status": "posted",
    "agency_code": "HHS-NIH11"
   },
   {
    "link": "https://www.grants.gov/search-results-detail/364017",
    "open": "10/01/2026",
    "close": "",
    "title": "Foundations for Operating the National Artificial Intelligence Research Resource: the NAIRR Operations Center (NAIRR-OC)",
    "agency": "U.S. National Science Foundation",
    "number": "25-546",
    "status": "posted",
    "agency_code": "NSF"
   }
  ],
  "total": 150,
  "agency": null,
  "search": "artificial intelligence",
  "source": "Grants.gov (US Government, public domain)",
  "status": "open"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-us-grants-search-0c9b977c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)