Backend not ready. Staging down. Third-party flaky. None of it blocks you anymore - the state you need is a toggle, not a ticket.
Free plan - no card - two-minute setup
This one's live. Go ahead - flip something.
Response overrides
Live traffic
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Shipping
QA ↔ dev
The traffic that caused it is invisible. The screenshot isn't enough. It bounces back and forth for a day.
With FlowMock: the bug travels as a link. Open the session, see the exact state, fix it first try.
Frontend
Or staging's down for two days. Or the third-party service is misconfigured again. Everyone's blocked by something nobody on the team can fix.
With FlowMock: flip the endpoint to the response you need and keep shipping.
Whole team
"Which account has data again?" "Nobody touch this account, we have a demo." Then someone wipes staging and the whole catalogue's gone.
With FlowMock: capture the golden data once. Everyone flips into their own copy - nobody can wipe it.
None of these are your fault. All of them are your problem. FlowMock makes them disappear.
FlowMock is a proxy in front of your staging API. Point your app's API base URL at it - or install the Chrome or Firefox extension, which routes your browser's API calls through it for you - and every response becomes something you control. Real traffic passes through untouched until you flip a state.
Every other tool makes a developer author mock code in a repo, or wrestle a local JSON file in a proxy only they understand. FlowMock turns state into a switch - one your manual QA can throw, your dev can watch, and your whole team can share.
Record a scenario from a real click-through, or AI-edit a captured body in plain English. No seed data. No redeploy. No backend PR. No "let me set that up for you." Flip into the state, run the test, flip back.
QA flips the state without writing a line of code. Dev watches every request stream in live, in the same session. Everyone shares one proxy URL, but each session is its own isolated reality. No stepped-on toes, no "who changed staging", no waiting your turn.
Mock the backend that's behind schedule, the staging that's down, the third-party that's misconfigured again.
An expired token mid-session. A calendar with 20 bookings. A button that only unlocks at event time. One toggle each.
Hit Record scenario, click through the flow, tick the requests that define the state - FlowMock builds the overrides. Capture once, name it, reuse it forever across the team.
Keep real traffic, change what you need. AI edit takes "make every item expired" or "return an empty list" and rewrites the captured response for you.
With the browser extension, click Mock on any request in a FlowMock tab next to Network. While a mock is on, the page glows and the toolbar counts it - and mocks expire on their own. No haunted staging.
Mask tokens and PII at the proxy, before anything is stored or shared.
A "demo mode" so the PM doesn't show the client `asdf`. A QA-only feature flag to fake a time-gated button. A folder of mock JSONs - and a script to keep them in sync with the real API. A proxy config only one developer knows how to edit.
Every one of those is FlowMock, hand-built, maintained by you, usable by almost no one else on the team.
You already decided you need this. You're just paying a developer to maintain it instead of using the real thing.
Demo modes, QA-only flags, folders of mock JSONs, a proxy config only I could drive - every team I've been on had one, and I kept being the developer paid to maintain it. FlowMock is that rig done properly: hosted, shareable, safe to hand to QA, and gone when you're done.
Record a scenario once in the browser - or AI-edit a captured response into the edge case you need - then replay that same state forever in your pipeline. Manual QA and automated tests finally exercising the same states - instead of two separate guesses at them.
Same proxy URL in CI as in the browser - one scenario, two surfaces.
Create a project. Paste your staging API URL.
Point your app's API base URL at your FlowMock proxy URL - or install the browser extension and turn FlowMock on for your site, no code change.
Flip states from the dashboard or the FlowMock tab in DevTools. Everything you don't touch passes through.
Change your API base URL - that's the whole integration.
Because those live in code or local config, need maintaining, and only the engineer who set them up can run them. The Android dev's Charles setup that catches great edge-case bugs - useless to a QA who can't read it. FlowMock is the same power, no code, shareable, so your whole team uses it, not just the one person who built the rig.
You don't have to. Install the Chrome or Firefox extension, open the FlowMock tab in DevTools on your staging app, and turn it on for that site. Your browser's API calls go through FlowMock; everyone else's don't. Switch to the proxy URL later for CI, mobile, and the rest of the team.
Redact it at the proxy. Mask tokens, PII, anything you name, before it's ever stored or shared. Test real flows without exposing real data.
You won't get a mystery. Mocks show a persistent active indicator and expire on their own. With the browser extension, the page glows after a mocked response and the toolbar badge counts them - no haunted account, no surprise behavior an hour later, no surprise on the bill.
Free forever for one person. When your team joins, you pay for concurrent active sessions - the real measure of how hard you're testing - not per seat. A big team that tests lightly pays less than a small team in crunch.
Early access: founder pricing for your first 12 months.
Get personally onboarded and lock in founder pricing while we're still early.
$49
/ month for your first 12 months
then standard Team pricing
Use code FOUNDING at checkout on the Team plan - limited spots available.
Claim founder pricingFree Free One person, free forever | Dev $25/mo Up to 3 people | TeamPopular $99/mo A QA + dev team | Business $249/mo High-intensity / org | |
|---|---|---|---|---|
| Concurrent active sessions | 1 | 5 | 25 | 100 |
| Projects | 1 | 3 | 10 | 100 |
| Team members | 1 | 3 | Unlimited | Unlimited |
| Saved scenarios | 1 | Unlimited | Unlimited | Unlimited |
| AI response helpers | ||||
| Audit log | ||||
| Team-shared scenarios | ||||
| Custom domains | ||||
| CI / headless replay | ||||
| Custom transform scripts |
Predictable tiers, no surprise overages: when you reach your session limit we tell you, we don't cut you off. Mocks auto-expire, so an idle session can't quietly burn a slot. Dev covers up to 3 people; Team and Business include unlimited team members.
Your next blocker is already on its way - a backend that isn't ready, a staging that's down, an edge case no account can reach. Have the state ready in one click instead of one afternoon.
