Inspect API requests, webhook events and MCP traffic in real-time.
No signup or account required -> just one command to start.
No more digging through logs or guessing what's happening - instantly see requests & responses. Easily expose your local API and MCP server to test integrations and capture webhook events from remote systems.
View headers, query parameters, request bodies, and response details in real-time.
Capture and review webhook payloads from third-party services with ease.
Requests and responses are only processed & stored locally.
Expose local services with secure, custom subdomains for testing and demos.
Generate a full mock backend from any OpenAPI spec in seconds.
Monitor incoming requests as they happen in your terminal and UI.
Classify, tag, and enrich requests with zero-code automation.
Connect ChatGPT, Claude, Copilot, and MCP clients to ask questions.
Follow request timelines and trace IDs end-to-end.
Track tool, resource, and prompt usage plus token count.
Monitor latency percentiles, error rates, and top endpoints.
Protect endpoints with API key or JWT guard access.
Run your app locally on http://localhost:3000.
npx @inspectr/inspectr --backend="http://localhost:3000"
Start Inspectr and expose your service.
Visit http://localhost:4004 to view the Inspectr UI.
curl http://localhost:8080
Send requests to http://localhost:8080 and see them live.
From first request to full observability
Each level solves a concrete developer pain. Use the capabilities you need today and come back for the rest when you are ready.
Keep development moving by capturing and shaping real requests before the backend exists.
Inspect every request and response for visibility and reproduce issues instantly.
Expose secure URLs to tunnel remote API clients and Webhook providers.