Manufacturing SaaS APIs for Artificial Intelligence(AI), Integrated Circuit(IC) & Cybersecurity(CyberSec)

We build, scale, and secure high-performance APIs so your team can focus on innovation — not infrastructure.

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APIs by Domain

AI & ML Tooling

High-throughput, low-latency APIs for model testing and reporting.

  • ✅ Real-time testing services
  • ✅ Prompt versioning & A/B testing
  • ✅ Rate-limited access tiers
View Documentation →
BETA

Integrated Circuit (IC) Design

SaaS APIs for automating test pattern generation, fault simulation, and yield analysis in IC design workflows.

  • ✅ API-driven test vector generation (ATPG)
  • ✅ Fault coverage & simulation reporting
  • ✅ Integration with EDA tools (Cadence, Synopsys, Siemens EDA)
  • ✅ Real-time yield analytics and binning
  • ✅ Secure, auditable access for multi-team fabs
BETA

Financial Intelligence API

Analyze financial data and generate AI-powered investment recommendations for funds, fintech platforms, and institutional investors.

  • ✅ Delivers AI-powered risk scoring and real-time opportunity detection
  • ✅ Generates actionable buy/hold/sell signals with quantified confidence levels
  • ✅ Supports customizable investment strategies: ESG, growth, value, momentum, and thematic portfolios
  • ✅ Integrates seamlessly via REST and WebSocket APIs for real-time alerts and portfolio management
Explore Financial API →

Why Four43 API?

We started in cybersecurity — and that foundation drives everything we do.

Today, we’re an API functionality organization: building reusable, secure, scalable SaaS APIs for modern development teams.

Our APIs are:

  • Pre-hardened — built with zero-trust, rate limiting, and audit logging by default.
  • Observable — real-time dashboards, SLA tracking, and alerting.
  • Developer-first — excellent docs, SDKs, and sandbox environments.
  • Manufactured — versioned, tested, and deployed like software products.