Mocks api responses for AJAX (XHR) requests. (Postman for Frontend)
Users
2,000
0 in 30 days
Rating
4.1 / 5
unchanged in 30 days
Ratings
17
0 in 30 days
Store rank
#20K
#17K among extensions
Version
4.4.0
updated 8 Jun 2026
Users
monthly, 3 years
Latest, 15 Oct 2026:2,000 usersMove the mouse over the chart for any month
Ratings count
monthly, 3 years
Latest, 15 Oct 2026:17 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About MockMan - mock APIs
This is essentially built to increase productivity in frontend development. Made for developers, it lets users to define rules (url, method and mock response) to respond to AJAX calls.
Supports all common libraries like axios, superagent, XMLHttp, fetch etc.
Response can be a JSON object or an error.
It includes a JSON formatter to automatically convert your response in proper json format.
Each rule can be individually turned on/off to apply mocking.
There's a global power switch to turn off mocking all the rules at once.
The JSON object maker lets users to make the object in JS syntax and the formatter will convert it into valid JSON object with inverted commas and no trailing commas etc.
some other response types are also supported in the editor like html, xml or text.
this can be changed from response headers which by default is set to application/json
Features:
1. Urls can be absolute complete paths or regex enabled.
2. Labels for rules, so user can add different versions of same api
3. Delay in response
4. Test your app with success and error responses.
5. Add response headers along with mock response in the rule.
Steps for Users -
1. Define the api url, method, response JSON or error msg to be mocked.
2. Refresh the project and the ajax / fetch request will be mocked. Mocked url will disappear from network tab and appear in console if rule matches.
For any query or bug report or feature request - reach out to nerdynbirdy@gmail.com.
This extension is made with love for fellow developers. If this helps you, support us with good reviews :))
Let's build stuff.
Growth
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Users
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Ratings
Rating
7 days
0
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0
0.00
30 days
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6 months
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1 year
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−0.05
Chrome Web Store search rankings
Where MockMan - mock APIs appears when people search the store, with the 30 day change