Companies / Castle 2
Castle 2
Company
The company stops bots and account abuse at scale using device, email, IP and behavioral intelligence.
Castle 2 has 6 investors on file, among them F-Prime Capital, FundersClub and SparkLabs Global Ventures. Its site was last checked 12 Nov 2026: site answers.
Investors
6 investors on file| Investor | Evidence | Type |
|---|---|---|
| Portfolio page | Venture capital | |
| Portfolio page | Venture capital | |
| Portfolio page | Venture capital | |
| Portfolio page | Accelerator | |
| Portfolio page | Venture capital | |
| Portfolio page | Accelerator |
A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data
Get Castle 2 and its investors as data
Look up any company's investors, or any investor's full portfolio, through one API key or MCP. A free account also opens Ask AI searches and alerts when F-Prime Capital adds a company.
Work email, sign-in link by email. Already have an account? Log in- Ask AI5 plain-English investor searches a day
- Full listsEvery portfolio row and two-firm overlap
- API and MCP100 REST or MCP calls a month, one key
- AlertsFollow 5 investors for portfolio and fund changes
$ curl -H "X-API-Key: YOUR_KEY" \
https://api.vcinfo.io/v1/companies/castle.io/investors
# also
GET /v1/companies/castle.io
GET /v1/companies/castle.io/news