Inspectr
Inspectr: An open-source local proxy for inspecting, replaying, and mocking API traffic. Ranked #18 of 25 in Local Development Proxy Tools by our editors (6.9/10); pricing: Free plan; best for developers debugging local HTTP services and APIs.
At a glance
- Editor score6.9 / 10
- PricingFree plan
- Best forDevelopers debugging local HTTP services and APIs
- Free planYes
- Paid from$5/mo
- HTTPS interceptionNo
- Facts checked4 Oct 2026
Where it wins
- Inspect and replay requests, headers, query parameters, bodies, and responses
- Mock APIs from OpenAPI specs and override response details
- Expose local services through a configurable public tunnel
Where it doesn't
- Does not provide HTTPS interception for encrypted traffic debugging
- Custom domains and reserved subdomains require the Pro plan
- Mobile app debugging is not supported
Our verdict on Inspectr
Inspectr is a local HTTP proxy and traffic-inspection tool for developers working with APIs, webhooks, and MCP servers. It forwards requests to a configured backend or captures them without forwarding, then presents request and response details in a browser UI or terminal. Its open-source core is suited to local development, while the tunnel option can expose a local service for access beyond the machine.
Traffic inspection is the central strength: developers can filter and replay captured requests, inspect headers, query parameters, bodies, and backend responses, and override response status, delay, content type, or example payloads. OpenAPI specifications can be used to mock backend responses, and the tool can inspect MCP server calls and webhook events. It supports macOS, Linux, and Windows, with cloud and self-hosted deployment options. The published plan highlights include unlimited API requests and webhooks, preferred URLs for public exposure, and SSL/TLS encryption on the Open Source plan; that encryption should not be confused with HTTPS interception, which Inspectr does not provide.
The Open Source plan is free. According to the vendor's pricing details, Pro costs $5 per month and adds custom domains, reserved subdomains, and priority email support. Enterprise adds advanced security and compliance, self-hosted deployment, and dedicated support. This makes Inspectr a fit for developers who want local HTTP traffic inspection, replay, and API mocking, including teams that need configurable tunnels. Developers whose work depends on decrypting and inspecting HTTPS traffic or debugging mobile apps should look for a tool with those capabilities instead.
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Inspectr pricing
All 3 Inspectr plans and prices →
Inspectr fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $5/mo |
| HTTPS interception | No |
| Edit requests and responses | Yes |
| Mobile app debugging | No |
| Supported platforms | macOS, Linux, Windows |
| API debugging tools | Yes |
| Money-back guarantee | 30 days |
| Deployment | Cloud, Self-hosted |
| Platforms | Web, macOS, Linux, Windows |
| Support | Email, Community, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan (source) |
| Website | inspectr.dev |
| Facts checked | 4 Oct 2026 |
Alternatives to Inspectr
- CharlesA cross-platform debugging proxy with deep traffic controls, sold through one-time licenses.9.2
- mitmproxyA scriptable proxy toolkit for inspecting, editing, replaying, and mocking web traffic.8.9
- HTTP ToolkitA cross-platform proxy for inspecting, rewriting, mocking, and replaying HTTP traffic.8.8
See all Inspectr alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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