Fiddler Everywhere
telerik.com
What it is
Fiddler Everywhere captures, inspects, modifies, and replays HTTP/S traffic across applications, services, and devices. Capture options include system proxy, network, browser, and terminal modes. It decodes HTTP/2, SignalR, WebSockets, MessagePack, SSE, gRPC, and Protobuf. Users can compose API requests, replay traffic, set breakpoints, and create rules that change requests or responses. Its MCP server connects to coding assistants and agent-powered IDEs, with setup documented for VS Code, Cursor, Claude Code, GitHub Copilot CLI, and Codex CLI. Output sanitization can remove sensitive information before data is shared with a model. The product is aimed at developers, QA staff, and support engineers. Desktop downloads are listed for Windows 10 and 11, macOS 11 or later on Intel or Apple Silicon, and Ubuntu 20 or later; Android and iOS are also listed as platforms. A 10-day trial is available, but there is no free plan. Lite costs $10 a month and Pro $19 a month, both billed monthly; Enterprise costs $37 a year, billed annually.
Spec sheet
- Purpose
- Fiddler Everywhere captures, inspects, modifies, and replays HTTP/S traffic across applications, services, and devices.Read 2 Oct 2026 · telerik.com
- Integrations
- Its MCP server connects to coding assistants and agent powered IDEs, with documented setup for VS Code, Cursor, Claude Code, GitHub Copilot CLI, and Codex CLI.Read 2 Oct 2026 · telerik.com
- Compliance
- The enterprise page describes a third party SOC 2 Type II assessment, GDPR compliance, HIPAA readiness, and an ISMS aligned with ISO/IEC 27001 certification standards.Read 2 Oct 2026 · telerik.com
- Support
- Pricing lists Basic support with 72 hour response, Lite support with 72 hour response, and Enterprise Priority support with 24 hour response.Read 2 Oct 2026 · telerik.com
- License
- Each subscription license allows one user, and the subscription automatically renews monthly or yearly according to the selected plan.Read 2 Oct 2026 · telerik.com
- Headquarters
- Burlington, Massachusetts, United StatesRead 28 Sep 2026 · telerik.com
- Enterprise controls
- Enterprise features include policy driven installation, managed app configuration, SSO, and offline mode for restricted environments.Read 2 Oct 2026 · telerik.com
- MCP security
- Fiddler MCP output sanitization can sanitize sensitive information before data is shared with a model.Read 2 Oct 2026 · telerik.com
- Platform limits
- Downloads are offered for Windows 10 and 11, macOS 11+ on Intel or Apple Silicon, and Linux Ubuntu 20+; the page advertises a free 10 day trial.Read 2 Oct 2026 · telerik.com
- Protocols
- The product decodes HTTP/2, SignalR, WebSockets, MessagePack, SSE, gRPC, and Protobuf.Read 2 Oct 2026 · telerik.com
- Supported users
- The product page identifies developers, QA staff, and support engineers as intended users.Read 2 Oct 2026 · telerik.com
- Traffic capture
- Capture modes include system proxy, network, browser, and terminal capturing.Read 2 Oct 2026 · telerik.com
- Traffic tools
- Users can compose API requests, replay traffic, set breakpoints, and create rules to modify requests and responses.Read 2 Oct 2026 · telerik.com
Plans and prices
Strong points and limits
Strong points
- Captures through system proxy, network, browser, and terminal
- Provides request editing, breakpoints, and traffic replay
- Decodes WebSockets, gRPC, and other listed protocols
- MCP output sanitization can remove sensitive information
Limits
- No free plan
- Trial lasts 10 days
- Desktop downloads list Windows 10+, macOS 11+, and Ubuntu 20+
Who it suits
It suits developers, QA staff, and support engineers who need to inspect and work with HTTP/S traffic. Teams using coding assistants may also use its MCP connection and output sanitization.
Verdict
Fiddler Everywhere combines traffic capture and editing tools with protocol decoding and coding-assistant connections. Review the per-user subscription terms, platform requirements, and support response times before choosing a plan.
Where Specifiction places it
- Web Debugging Proxies#9 of 278.5