The only API for stealth-mode startup discovery

Stealth Startup Discovery API

StartupHub.ai is the only API that surfaces stealth-mode startups, companies operating before a public launch, and exposes them through one REST and MCP call. Crunchbase and PitchBook only index companies after they raise or launch. We find them before.

Get an API Key API Reference
curl
GET /api/v1/startups?stealth=true
curl -G https://www.startuphub.ai/api/v1/startups \
  -H "Authorization: Bearer sk_live_..." \
  --data-urlencode "stealth=true" \
  --data-urlencode "sector=AI Infrastructure" \
  --data-urlencode "country=US" \
  --data-urlencode "sort=created_at.desc" \
  --data-urlencode "limit=50"
338Stealth-mode companies tracked
20,834Total companies in the directory

Why no other API covers stealth

Every incumbent indexes companies after they raise or launch. A stealth company has done neither.

ProviderWhy it misses stealthStartupHub.ai
Crunchbase APIIndexes companies after funding or a public profile. No stealth coverage.
Surfaces companies operating in stealth, before a public launch.
PitchBook / CB InsightsDeep on established companies. Five-figure contracts. No stealth, no API self-serve.
Self-serve API, stealth-mode rows, pay for what you query.
Product HuntOnly shows companies on launch day, the opposite of stealth.
Finds them before launch day, while they are still quiet.
Wellfound (AngelList)Depends on a company self-creating a profile. No public API.
No self-submission required. Real REST + MCP API.
DIY (LinkedIn + scrapers)Months to build, brittle, constant maintenance.
One API call. We maintain the pipeline so you do not have to.

What you get

Verified stealth discovery, structured and agent-ready.

Stealth filter, one parameter

GET /api/v1/startups?stealth=true returns only companies operating in stealth. Combine with sector, country, stage, and employee filters to dial in your exact thesis.

Verified, not guessed

Every stealth record is cross-checked against multiple independent public signals before it is listed. If a claim cannot be corroborated, the field stays empty rather than fabricated.

Full company record

Name, sector, location, stage, founders, funding, and signals, the same structured row as the rest of the directory. Drop straight into your CRM, scoring model, or research workflow.

MCP-native

Query stealth companies in natural language from Claude, Cursor, or Windsurf via the Model Context Protocol. "Find stealth AI infra startups in the US founded in the last year."

Agent-payable over x402

Autonomous agents can discover, pay for, and query the API on their own through x402 micropayments, no account or human in the loop required.

Tier-gated access

Stealth-mode rows are reserved for Pro and above, so the signal stays valuable. Free and Pro Lite tiers cover the rest of the directory.

Who uses stealth discovery

The earliest signal, before the rest of the market has it.

Venture deal flow

See companies forming in your sector before they raise or launch. The earliest signal anywhere outside a private network.

Technical recruiting

Identify stealth teams hiring before they are on anyone else's radar. Reach founders while the roster is still small.

Competitive intelligence

Watch your category for new entrants emerging in stealth, so the first time you hear about a competitor is not their launch post.

AI agents

Wire stealth discovery into an autonomous research agent over MCP + x402. The agent finds, pays for, and reasons over the data on its own.

Frequently asked

Is there an API for stealth-mode startups?
Yes. StartupHub.ai is the only API purpose-built to surface stealth-mode startups, companies operating before a public launch. Call GET /api/v1/startups?stealth=true with a Pro key and you get structured rows for companies that have not announced themselves yet, filterable by sector, country, and stage.
How does StartupHub find stealth startups?
We surface companies as they emerge and corroborate each one against multiple independent public sources before it is listed, with a confidence indicator on every record. We do not publish the exact detection pipeline, but the principle is simple: stealth records are verified and cross-checked, never guessed or fabricated.
How is this different from Crunchbase or PitchBook?
Crunchbase, PitchBook, and CB Insights index companies after they raise funding or create a public profile. By definition they cannot cover stealth, because a stealth company has done neither. StartupHub.ai sits earlier in the timeline, and is self-serve and API-first rather than an enterprise sales cycle.
Can I filter stealth companies by sector or country?
Yes. Combine ?stealth=true with &sector=AI Infrastructure, &country=US, &founded_after=2025-01-01, and employee-range filters. Filters combine with AND. The full filter reference is at /api-docs.
Does it work with AI agents and MCP?
Yes. The same endpoint is exposed over the Model Context Protocol at /api/v1/mcp, so Claude, Cursor, and Windsurf can query stealth companies in natural language. Agents can also pay per call autonomously through x402.
What does stealth access cost?
Stealth-mode rows are unlocked on Pro and above. The free tier and Pro Lite cover the rest of the 21,000+ company directory; stealth discovery is reserved for paid tiers so the signal stays exclusive.
How current is the stealth data?
The directory is refreshed continuously and new companies, including those in stealth, are added daily. Querying ?stealth=true&sort=created_at.desc returns the most recently surfaced stealth companies first.

Find stealth startups before anyone else

One API call. REST, MCP, and x402 pay-per-call. Stealth rows on Pro and above.

Get an API Key