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NetworkSpySee every API call clearly and debug faster

NetworkSpy is a powerful HTTP(s) proxy debugger for inspecting GraphQL, streaming, and AI API traffic. Debug modern applications with custom viewers.

HTTP Proxy
GraphQL Debugging
Network Traffic Analysis
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More About NetworkSpy

NetworkSpy

NetworkSpy is a powerful HTTP/HTTPS traffic debugger designed specifically for AI-powered development teams. Capture, analyze, and secure your application traffic in seconds with custom-built viewers that streamline your fast-moving AI workflow.

Product Highlights

  • Seamless SSL/TLS Decryption: Full HTTPS interception with zero-config setup, automatic certificate management, and one-click trust for secure debugging
  • AI Request Debugging: Intercept streaming LLM tokens in real-time, track token usage, and visualize latency for every chunk with automatic latency distribution maps
  • Granular Comparison Engine: Identify subtle regressions by comparing any two requests side-by-side, diffing headers, bodies, and response states
  • Intelligent Request Replay: Modify and re-emit captured traffic instantly for stress-testing edge cases and iterating on API designs
  • Live Traffic Breakpoints: Pause and modify live traffic on the fly, altering payloads and status codes before they reach your client or server
  • Dynamic Resource Mapping: Swap remote resources with local files for rapid prototyping without backend updates
  • Custom Viewer Engine: Build extensible tab visualizers for any data format using the flexible viewer engine

Use Cases

  • GenAI Application Development: Debug streaming AI responses, monitor token consumption, and optimize latency in real-time for LLM-powered applications
  • API Design & Testing: Rapidly iterate on API designs by capturing, modifying, and replaying requests to validate edge cases and error handling
  • Frontend Prototyping: Test frontend changes instantly by mapping remote resources to local files without waiting for backend deployments
  • Security Auditing: Inspect HTTPS traffic with full decryption to identify vulnerabilities, validate certificates, and ensure secure data transmission
  • Performance Optimization: Analyze precise timing metadata, bandwidth usage, and error rates to pinpoint bottlenecks in distributed systems

Target Audience

NetworkSpy is built for AI/ML engineers, backend developers, DevOps professionals, and security researchers who need deep visibility into HTTP/HTTPS traffic. Ideal for teams building LLM-powered applications, microservices architectures, or complex API integrations requiring real-time debugging and custom visualization capabilities.

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