# SiteCheck US Federal Grants Search

> SiteCheck US Federal Grants Search is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-19).

Search US federal grant opportunities from Grants.gov by keyword, status, and result limit

## Facts

- Endpoint: GET https://api.sitecheck-api.workers.dev/api/grants?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-us-federal-grants-search-063d485a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Z0u6yiVIzWcuLnnQ0DNBH

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 sitecheck-us-federal-grants-search-063d485a
```

Example prompt: Search federal grants on Grants.gov for keywords 'renewable energy', show me up to 15 results with status 'posted' only.

## When to prefer this

Use this endpoint when you need to search live US federal grant opportunities from Grants.gov by keyword, with optional filtering by status (posted, forecasted, closed, archived) and result count. Prefer this over general web search when you need structured, machine-readable grant data including agency names, dates, grant numbers, and direct links to official government listings.

## Known failure modes

- Missing required 'q' keyword parameter returns a validation error
- Invalid 'status' value (not one of posted/forecasted/closed/archived) may return an error or empty results
- No matching grants returns an empty grants array with total 0
- Upstream Grants.gov API downtime causes request failure
- Limit value outside 1-25 range may be clamped or return an error

## How this service works

US federal grant opportunities from Grants.gov matching keywords: number, title, agency, open and close dates (YYYY-MM-DD), status and link, newest opening date first. Grants.gov matches keywords anywhere in the full listing, not only the title. Posted and forecasted opportunities by default. US government data.

## Output

Returns a JSON object with the query parameters used, total number of matching grants, and an array of grant records each containing the grant title, number, agency, open/close dates, status, and a direct link to the Grants.gov detail page, plus attribution and the timestamp of the check.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Keywords"
      },
      "limit": {
       "type": "string",
       "description": "1 to 25 (default 10)"
      },
      "status": {
       "type": "string",
       "description": "posted, forecasted, closed or archived (optional)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "query": {
   "q": "climate",
   "status": null
  },
  "total": 42,
  "grants": [
   {
    "link": "https://www.grants.gov/search-results-detail/360366",
    "opens": "2026-10-06",
    "title": "HEAL Initiative: Integrative Management of chronic Pain and OUD for Whole Recovery (IMPOWR) - Building Engagement, Assistance, Capacity, Outreach, and Networks (BEACON) Center (U2C Clinical Trial Not Allowed)",
    "agency": "National Institutes of Health",
    "closes": "2027-01-26",
    "number": "RFA-DA-28-012",
    "status": "posted"
   },
   {
    "link": "https://www.grants.gov/search-results-detail/364016",
    "opens": "2026-10-01",
    "title": "Cooperative Agreement for Affiliated Partner with the Southern Appalachian Cooperative Ecosystem Studies Unit (CESU)",
    "agency": "Geological Survey",
    "closes": "2026-10-30",
    "number": "G27AS00165",
    "status": "posted"
   }
  ],
  "source": "https://api.grants.gov/v1/api/search2",
  "checkedAt": "2026-10-14T11:48:42.272Z",
  "attribution": "US federal grant opportunities (Grants.gov)"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-us-federal-grants-search-063d485a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sitecheck-api.workers.dev](https://www.zero.xyz/host/api.sitecheck-api.workers.dev/llms.txt)