Grants.gov API

Search US federal grant opportunities and pull full funding details as clean JSON.

The API.SH Grants.gov API returns US federal grant opportunities as structured JSON. Search by keyword, opportunity number, assistance listing, agency, status, eligibility, funding category and instrument, or how recently it was posted, then open any opportunity for its synopsis or forecast: posting and close dates, estimated total funding, award ceiling and floor, expected number of awards, cost sharing, eligible applicants, documents and related opportunities.

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2 endpoints
from $1 / 1,000 calls
1,000 free credits / month
failed calls free

US federal grant opportunity search

GET https://api.api.sh/grants-gov/v1/search

{ "success": true }

1 credit · $1 per 1,000 calls

What you can build with the Grants.gov API

Grant alerts for nonprofits and universities

Run a saved search by keyword, eligibility and posting window every day and send new forecasted or posted opportunities to your team.

/search

Deadline and funding trackers

Open each opportunity to record its close date, award ceiling and floor, estimated total funding and expected number of awards in a spreadsheet or CRM.

/opportunity

Agency funding research

Filter by agency, funding category and instrument and read the facet counts to see which agencies post the most opportunities in your field.

/search

Grant-finder products

Power a grant search page or matching tool with search results plus full details, documents and application packages for the opportunities users open.

/search /opportunity

AI grant assistants

Let an AI agent search by eligibility and category, then read the synopsis and eligible applicants to explain whether an opportunity fits.

/search /opportunity

Grants.gov data you get

Field names from real responses. Numbers come parsed, URLs absolute, dates in ISO 8601.

Grants.gov API endpoints and prices

Every Grants.gov endpoint costs 1 credit per call: credits are $1 per 1,000 on a monthly plan, $2 pay-as-you-go. Pricing

Search and discovery1

US federal grant opportunity search

/grants-gov/v1/search

$1 · $2 PAYG

1 credit

More data1

US federal grant opportunity details

/grants-gov/v1/opportunity

$1 · $2 PAYG

1 credit

Call the Grants.gov API

US federal grant opportunity search: GET https://api.api.sh/grants-gov/v1/search

curl "https://api.api.sh/grants-gov/v1/search?q=climate" \
  -H "x-api-key: $APISH_KEY"

import os, requests

res = requests.get(
    "https://api.api.sh/grants-gov/v1/search",
    params={"q": "climate"},
    headers={"x-api-key": os.environ["APISH_KEY"]},
    timeout=120,
)
res.raise_for_status()
data = res.json()

const url = new URL("https://api.api.sh/grants-gov/v1/search");
url.searchParams.set("q", "climate");

const res = await fetch(url, { headers: { "x-api-key": process.env.APISH_KEY } });
if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);
const data = await res.json();

# Google Sheets (API.SH add-on)
=APISH("/grants-gov/v1/search", "q", "climate")

# Zapier, Make, n8n (verified node): pick the API.SH app,
# choose "Grants.gov" and "US federal grant opportunity search".

# AI agents (Claude, ChatGPT, Cursor): add the
# API.SH MCP server https://api.sh/mcp

Create a free accountConfirm your email and get 1,000 free credits every month. No card needed.
Create an API keyOne key works for all 483 platforms.
Send the requestJSON back in one call. Add output=csv or output=ndjson for files.

Why API.SH for Grants.gov data

Public data only: no Grants.gov login, cookies or account needed
One key and one response shape for Grants.gov and 482 other platforms
Built and maintained by API.SH, not third-party publishers
Pay per call; errors on our side cost nothing
Live status for every endpoint

API.SH vs the official Grants.gov API

Grants.gov offers official RESTful APIs, including system-to-system services for applicants and grantors and the newer Simpler.Grants.gov API, which needs an API key requested from the Grants.gov team. API.SH needs no key request or system-to-system setup and returns search results with facet counts and full opportunity details in the same JSON format it uses for every other site.

Instead of building your own Grants.gov scraper or running an Apify actor, call a stable endpoint with one API.SH key and a fixed price per call.

Grants.gov API questions

What Grants.gov data can I get?+

Opportunity search with filters for keyword, number, assistance listing, agency, status, eligibility, category, instrument and posting window, plus facet counts (/grants-gov/v1/search), and one opportunity with its synopsis or forecast, dates, funding amounts, eligibility, documents and related opportunities (/grants-gov/v1/opportunity).

How much does the Grants.gov API cost?+

Every Grants.gov endpoint costs 1 credit per call. On a monthly plan 1,000 credits cost $1 (Starter is $50/month for 50,000 credits). Pay-as-you-go is $2 per 1,000 credits, with top-ups from $15 that never expire.

Is there a free trial?+

Yes. Every account gets 1,000 free credits every month. That is 1,000 calls to /grants-gov/v1/opportunity at 1 credit each.

Is there an official Grants.gov API?+

Yes. Grants.gov publishes RESTful APIs for system-to-system work and the Simpler.Grants.gov API for opportunity search, which needs an API key. API.SH is an alternative when you want the same opportunity data without requesting a key, in one JSON format shared with other sources.

Do I need a Grants.gov API key or login?+

No. API.SH reads public Grants.gov opportunity data with your API.SH key only. No Grants.gov account, login or Grants.gov API key is used. Agency contact names, e-mails and phone numbers are left out.

Can I get only open grants or grants posted recently?+

Yes. Search covers forecasted and posted opportunities by default, and you can set status and posted_within_days, then sort by open date, close date, number, title or agency.

Can I fetch full details for many search results at once?+

Yes. Set details=true on /grants-gov/v1/search to add full details to the first results of the page, or call /grants-gov/v1/opportunity with an id or opportunity number.

How do I get started?+

1. Sign up at api.sh. 2. Copy your API key. 3. Call /grants-gov/v1/search with q set to your topic. Every parameter is in the docs at https://api.sh/docs. You can also use the JS or Python SDK, Google Sheets, Zapier, Make, n8n or the MCP server at https://api.sh/mcp.