The crypto startup API: endpoints for stealth signals, teams, and raises

The Recent Funding API for crypto startups: companies flagged in stealth before their raise, team-page counts, sourced funding rounds and accelerator filters, with curl examples and real responses.

Recent Funding's API returns crypto startups as JSON: stealth flags, team-page counts, funding rounds with their sources, and accelerator filters. Every request needs a free API key sent as Authorization: Bearer <key> (an email, issued at once, 50 requests a day). As of October 9, 2026, 1790 of the 30139 companies are crypto.

The base URL is https://recentfunding.com; list pages include next_offset (null on the last page). Paging and errors are covered in the general API guide.

Stealth flags

sort=days_early puts the companies flagged longest before their raise was public first; companies without a value come last, so stop at the first null:

curl -H "Authorization: Bearer $RF_KEY" "https://recentfunding.com/api/v1/companies?crypto=true&sort=days_early&limit=10"

{
  "company": {
    "slug": "sapiom",
    "name": "Sapiom",
    "flagged_at": "2026-02-06",
    "days_early": 180
  }
}

Only 4 crypto companies have days_early (119 across all sectors), so drop crypto=true for the full list. Stealth startups flagged before they raised explains each field.

Team size

team_size counts people listed on the company's team page, and team_source_url is the page counted. 182 crypto companies have one (how it's counted).

curl -H "Authorization: Bearer $RF_KEY" "https://recentfunding.com/api/v1/companies?crypto=true&sort=team_size&limit=20"

Raises, with sources

The rounds feed lists rounds with an amount, newest first; since takes a date and min_amount a floor in USD:

curl -H "Authorization: Bearer $RF_KEY" "https://recentfunding.com/api/v1/rounds?crypto=true&since=2026-09-01&min_amount=10000000"

amount_usd is a decimal string, source_url is where the amount came from, and source_provider says how it was found. For each company's latest round use /api/v1/companies?crypto=true&min_raise=10000000&sort=raise. A company's full history:

curl -H "Authorization: Bearer $RF_KEY" "https://recentfunding.com/api/v1/companies/sapiom"

{
  "company": {
    "slug": "sapiom",
    "name": "Sapiom",
    "stage": "series-a",
    "days_early": 180
  },
  "rounds": [
    {
      "stage": "series-a",
      "amount_usd": "35000000.00",
      "announced_at": "2026-08-05T00:00:00.000Z",
      "source_url": "https://www.morningstar.com/news/business-wire/20260805915898/sapiom-raises-35-million-series-a-to-power-the-next-trillion-ai-agents",
      "source_publisher": "Morningstar%2c Inc.",
      "source_provider": "press"
    },
    {
      "stage": "seed",
      "amount_usd": "15750000.00",
      "announced_at": "2026-02-08T00:00:00.000Z",
      "source_url": "https://news.google.com/rss/articles/CBMiY0FVX3lxTE9xTFhIT3BQTVJzRFIyY2RuSkdyWW1MYl92bU1xOGwyRTN1ci1SUExieDFJMnNadS1RaGRZM3psbUNUMGFqQktqb2tlb2o0X25yZVNiamVWYXowUnVqSjJrVmVvQdIBaEFVX3lxTFBHYUJLOHJYdDJKSTIzZEoxbjN0MmpYT2RIQll1aHZ0SGlyVTktVnVWSEZJcDhhY0pFSjg5QnBxZko1SmJGUTRkWmFiU282UGk0R1BiQWRJWktWanhWWHpsZGljWV9rOE5n?oc=5",
      "source_publisher": "Pulse 2.0",
      "source_provider": "google-news"
    }
  ]
}

A round whose only source is a page we don't link to comes back with no source, and Recent Funding doesn't publish its amount.

Accelerators, sectors and search

accelerator takes yc, speedrun (a16z speedrun), yzi (YZi Labs), alliance, csx (a16z CSX), colosseum or any; industry narrows to a sector (/api/v1/stats lists the slugs in by_industry), and q searches names, descriptions, sectors and investors:

curl -H "Authorization: Bearer $RF_KEY" "https://recentfunding.com/api/v1/companies?crypto=true&accelerator=yzi"
curl -H "Authorization: Bearer $RF_KEY" "https://recentfunding.com/api/v1/companies?crypto=true&industry=defi&stage=seed&sort=raise"
curl -H "Authorization: Bearer $RF_KEY" "https://recentfunding.com/api/v1/companies?crypto=true&q=stablecoin"

An unknown sort or parameter returns a 400 listing the allowed values. If you publish the data, link every amount to its source_url and every team count to its team_source_url. The API docs and openapi.json list every parameter and field.

Related on Recent Funding

• Categories ranked by capital raised
• Stablecoin startups
• Get a free API key
• Money flow: raises, acquisitions and new funds
• AI investors: the VC firms and accelerators backing the most AI startups
• Game startups: the gaming startups that raised most recently
• Green startups: the climate and clean energy startups that raised most recently
• Recent Funding API docs: every endpoint behind this post; a free API key takes just an email