Probe
Probe is a local HTTP/HTTPS debugging proxy and API client for examining app traffic, adjusting requests and responses, mocking endpoints, and automating API…
What Probe is
Probe is a local HTTP/HTTPS debugging proxy and API client for examining app traffic, adjusting requests and responses, mocking endpoints, and automating API work. It captures and decrypts traffic from iPhone and Android devices, simulators, desktop apps, and terminal clients, displaying headers, bodies, and timing. Breakpoints can pause a request or response so users can edit it before continuing or aborting. Map Local can return a local file or inline body for matching URLs, while Map Remote forwards matching traffic to another host. Visual flows can chain requests, extract values, check results, branch, and loop; they can 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 includes an MCP server for compatible clients such as Claude Code, Cursor, and Codex. Its free plan is listed as free. The maker says captured traffic and session data stay on-device and analytics are not collected; HTTPS inspection requires installing and trusting Probe’s locally generated CA certificate.
Good
- Captures traffic from mobile, desktop, and terminal clients.
- Breakpoints allow request and response edits.
- Supports HTTP and GraphQL API requests.
- Visual flows can branch and loop.
- Free plan includes HTTPS interception and mobile debugging.
Watch out
- HTTPS inspection requires installing and trusting its CA certificate.
- Android 7+ apps must opt in to user-installed CAs.
- Desktop app requires macOS 12+ or Windows 10+.
Who it suits
Probe may suit developers who need to inspect or modify traffic from mobile, desktop, or terminal clients, or automate API workflows. Its local traffic handling may appeal to users who want captured sessions and private CA keys to remain on-device.
Verdict
Probe brings traffic inspection, request editing, mocking, and API automation into a local debugging tool. Its HTTPS setup has a certificate requirement, and Android 7+ only trusts user-installed CAs for apps that opt in.
Plans and prices
From Probe's own pricing page, checked 8 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | HTTPS interception · iOS & Android debugging · request/response inspection · breakpoints & JavaScript scripting · collections · session save/load & export · network throttling |
| Pro | Priced on request | Coming soon · Everything in Free · advanced scripting & automation · Map Remote & Map Local · team collection sharing · priority support |
The facts
Each one read from Probe's own pages, with the date it was checked.
What it does
- 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.checked 8 Oct 2026
- API client
- The client supports HTTP and GraphQL, collections, environments, auth, and history; it imports cURL or Postman and exports to Postman v2.1.checked 8 Oct 2026
- Automation
- Visual flows can chain requests, extract values, assert on results, branch, loop, and run from the app, REST API, MCP, or headless CLI.checked 8 Oct 2026
- Desktop support
- Probe’s desktop app supports macOS 12+ on Apple Silicon or Intel and Windows 10+.checked 8 Oct 2026
- 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.checked 8 Oct 2026
- 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.checked 8 Oct 2026
- Other integrations
- Probe lists file browsing and transfers over SFTP, FTP/FTPS, S3, and WebDAV.checked 8 Oct 2026
- Product
- Probe is a local HTTP/HTTPS debugging proxy and API client for inspecting app traffic, mocking APIs, and automating requests.checked 8 Oct 2026
- Response editing
- Breakpoints let users pause requests or responses, edit headers and bodies, then continue or abort.checked 8 Oct 2026
- 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.checked 8 Oct 2026
- 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.checked 8 Oct 2026
- 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.checked 8 Oct 2026
- Traffic capture
- It captures and decrypts HTTP/HTTPS requests from iPhone, Android, simulator, desktop apps, and terminal clients, showing headers, bodies, and timing.checked 8 Oct 2026
The company
- Founded
- 2021checked 28 Sep 2026
- Headquarters
- Tokyo, Japanchecked 28 Sep 2026
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