API reference / Funding

Search funding rounds

Written and maintained by The ProspectAPIs team

GET/v1/funding

GET /v1/funding is the ProspectAPIs operation searchFunding, in the Funding group of the REST API. Keyset-paginated funding rounds, newest first. Costs one record per record returned, after the monthly free allowance; a search that matches nothing is free. Pass next_cursor back as cursor for the next page. If the balance ends a page early the response carries X-Result-Capped: balance and next_cursor still continues exactly after the last record served. Cost: $0.02 per record, after 100 free a month. Send your API key as a Bearer token in the Authorization header.

How this fits with the rest of the funding API, with worked examples, is in the funding signals guide.

Parameters

An unknown query parameter is refused with a 400 rather than ignored, so a typo never widens a search you pay for.

Responses

Every error answers with the same JSON body, an error string and sometimes a code; the errors page lists each status and when it happens. A per-key 429 carries Retry-After; see rate limits.

200 response fields

A page of funding rounds. The body is a FundingList.

Code samples

Each sample sends the same request. Set PROSPECTAPIS_KEY in your environment first. Values come from the spec's examples; replace them with your own.

curl -G https://api.prospectapis.com/v1/funding \
  -H "Authorization: Bearer $PROSPECTAPIS_KEY" \
  --data-urlencode "since=2026-10-01" \
  --data-urlencode "round=seed,series_a" \
  --data-urlencode "limit=10"

const params = new URLSearchParams({ since: "2026-10-01", round: "seed,series_a", limit: "10" });
const res = await fetch(`https://api.prospectapis.com/v1/funding?${params}`, {
  headers: { Authorization: `Bearer ${process.env.PROSPECTAPIS_KEY}` },
});
if (!res.ok) throw new Error(`${res.status}: ${(await res.json().catch(() => ({}))).error ?? res.statusText}`);
const data = await res.json();
console.log(data);

import os, requests

res = requests.get(
    "https://api.prospectapis.com/v1/funding",
    headers={"Authorization": f"Bearer {os.environ['PROSPECTAPIS_KEY']}"},
    params={"since": "2026-10-01", "round": "seed,series_a", "limit": 10},
    timeout=30,
)
res.raise_for_status()
data = res.json()
print(data)

Billing

Billing reserves before it serves: the call holds what it may cost, serves at most what that hold covers, and refunds the rest when the response closes. Any non-2xx answer refunds the whole hold, so a failed call costs nothing. The response reports your balance in X-Credits-Remaining.

Related

The funding signals guide covers this area end to end. Next operation: Read one funding round. Every operation, grouped by area, is on the API reference index.

Create a free account to get a key, then run the samples above with your own values.