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Probe

useprobe.app

Free plan WindowsmacOSiOSAndroidAPI
Visit useprobe.app
Spec score 8.0 #15 of 27 in Web Debugging Proxies

What it is

Probe is a local HTTP/HTTPS proxy and API client for examining application traffic, editing requests and responses, creating mocks, and automating requests. It can capture traffic from phones, simulators, desktop apps, and terminal clients, then show headers, bodies, and timing. Breakpoints let users pause a request or response, change its headers or body, and continue or abort it. Map Local serves a local file or inline body for matching URLs; Map Remote forwards them to another host. Visual flows can chain requests, extract values, check results, branch, and loop, and run in the app, through REST API or MCP, or with a headless CLI. The API client supports HTTP and GraphQL, collections, environments, authentication, and history. It imports cURL or Postman and exports to Postman v2.1. Probe also includes an MCP server for compatible clients and file browsing and transfers over SFTP, FTP/FTPS, S3, and WebDAV. It is available for Android, iOS, macOS, Windows, and API use. The free plan costs nothing.

Spec sheet

Product
Probe is a local HTTP/HTTPS debugging proxy and API client for inspecting app traffic, mocking APIs, and automating requests.Read 8 Oct 2026 · useprobe.app
Support
The documentation directs users who cannot find an answer to open a GitHub issue, and the privacy policy lists an email contact for policy questions.Read 8 Oct 2026 · useprobe.app
Headquarters
Tokyo, JapanRead 28 Sep 2026 · useprobe.app
Founded
2021Read 28 Sep 2026 · useprobe.app
AI integrations
Probe has a built-in MCP server for Claude Code, Cursor, Codex, and other compatible clients to inspect and replay traffic and manage mocks and flows.Read 8 Oct 2026 · useprobe.app
API client
The client supports HTTP and GraphQL, collections, environments, auth, and history; it imports cURL or Postman and exports to Postman v2.1.Read 8 Oct 2026 · useprobe.app
Automation
Visual flows can chain requests, extract values, assert on results, branch, loop, and run from the app, REST API, MCP, or headless CLI.Read 8 Oct 2026 · useprobe.app
Desktop support
Probe’s desktop app supports macOS 12+ on Apple Silicon or Intel and Windows 10+.Read 8 Oct 2026 · useprobe.app
HTTPS security detail
Probe performs HTTPS interception using a locally generated CA, so it can see decrypted traffic routed through it; the policy says that data is not transmitted elsewhere.Read 8 Oct 2026 · useprobe.app
Mocking and routing
Map Local can answer matching URLs with a local file or inline body, while Map Remote can forward them to another host.Read 8 Oct 2026 · useprobe.app
Other integrations
Probe lists file browsing and transfers over SFTP, FTP/FTPS, S3, and WebDAV.Read 8 Oct 2026 · useprobe.app
Response editing
Breakpoints let users pause requests or responses, edit headers and bodies, then continue or abort.Read 8 Oct 2026 · useprobe.app
Security and privacy
The privacy policy says captured traffic and session data stay on the device, private CA keys never leave it, and Probe does not collect analytics or require an account.Read 8 Oct 2026 · useprobe.app
Setup limitation
HTTPS inspection requires installing and trusting Probe’s CA certificate on each device; Android 7+ only trusts user-installed CAs for apps that opt in.Read 8 Oct 2026 · useprobe.app
Traffic capture
It captures and decrypts HTTP/HTTPS requests from iPhone, Android, simulator, desktop apps, and terminal clients, showing headers, bodies, and timing.Read 8 Oct 2026 · useprobe.app

Plans and prices

Free Free HTTPS interception · iOS & Android debugging · request/response inspection · breakpoints & JavaScript scripting · collections · session save/load & export · network throttling Read 8 Oct 2026 · useprobe.app
Pro Priced on request Coming soon · Everything in Free · advanced scripting & automation · Map Remote & Map Local · team collection sharing · priority support Read 8 Oct 2026 · useprobe.app

Every Probe plan and price →

Strong points and limits

Strong points

  • Captures traffic from mobile, desktop, and terminal clients
  • Breakpoints edit requests and responses
  • Visual flows support branching and loops
  • Free plan includes HTTPS interception and debugging
  • Privacy policy says traffic stays on device

Limits

  • HTTPS inspection requires installing and trusting a CA
  • Android 7+ apps must opt in to user-installed CAs
  • Desktop support requires macOS 12+ or Windows 10+

Who it suits

Probe suits developers who need to inspect or alter app traffic, test API behavior, or automate request sequences. Its mobile and desktop coverage, API interfaces, and compatible-client integrations support varied debugging workflows.

Verdict

Probe combines traffic inspection, request editing, mocking, API work, and automation in one tool. Its free plan is specified, while HTTPS setup requires trusting a local certificate on each device.

Where Specifiction places it

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