The ToolFusion API enables developers to integrate engineering calculation capabilities into custom applications, workflows, and automation pipelines. Access formula databases, calculation engines, and content through RESTful endpoints.

## API Capabilities **Calculation API:** Programmatic access to engineering formulas and computation engines. Submit parameters via JSON and receive calculated results, charts, and unit conversions. **Content API:** Access knowledge articles, guides, and references. Retrieve article content, metadata, and related calculators. **Search API:** Cross-field search across all calculators, articles, and resources. Filter by discipline, content type, applicable standard. ## Use Cases **Custom Calculation Tools:** Embed specific engineering calculations into your internal design tools or workflows. For example, pipe pressure drop calculation in a pipeline routing application. **Automated Design Checks:** Integrate rule-based design verification into your engineering workflow. Auto-validate cable sizing against code minimums. **Learning & Training:** Build interactive training modules using ToolFusion content and calculation engines. ## Implementation Notes All API endpoints require authentication. Rate limits apply based on subscription tier. Standard RESTful patterns with JSON request/response. CORS support for web applications. Contact the ToolFusion team via the contact page for API access and documentation.