Servistate HTTP Editor & REST API Client
Extension Delisted
This extension is no longer available in the official store. Delisted on 2025-09-17.
Create, edit and send HTTP requests. Run API tests, validate HTTP responses and measure API performance.
All-in-one HTTP editor and API client for working with web requests. If you are building, debugging, testing or monitoring APIs, this is for you.
Build HTTP requests through an easy-to-use visual editor. Easily define query parameters, request headers and post data. Code editor included.
Parse and visualize HTTP responses. Prettify HTML, XML and JSON. Expand / collapse, search and navigate into JSON data.
Automatically track standard response metrics such as request time, status code and success rate. Monitor response stats real time.
Save your API requests, stats and dashboards into projects. Import / export data in readable JSON. Your data is your own.
Validate API requests through an extensive set of assertions that verify HTTP response data, status code and headers.
Define project-wide variables such as base URL, standard headers and post data. Expand variable references in requests. Extract data from HTTP response messages and assign to variables in your project.
For file upload requests, save uploaded files into projects for easy access and self-containment.
Do you still cURL your way out of API headaches? Check out Servistate HTTP Editor.
------------------------------------------------
Changelog:
v1.6.1
- [fixed] Converting binary responses to text can freeze the browser
- [fixed] The raw HTTP message view does not show the response body
- [fixed] The loading indicator does not disappear after sending a request when the RAW or PREVIEW tab is selected
- [fixed] The RAW and PREVIEW tab content disappears after re-sending a request
v1.6
- [added] Download response data as file
- [added] Save response data to project files
- [added] "View as Text" option for binary responses
- [fixed] Cannot save binary responses to project files
- [fixed] Save button excessively shows unsaved changes prompt when adding a new request to project
- [fixed] Response preview tab is not shown in some cases
- [fixed] "Save to project" in binary responses is enabled, but does not work if no project is selected
v1.5.1
- [fixed] Broken version history & welcome dialog on initial start
v1.5
- [added] JSON Schema-based response validation
- [added] "Unsaved changes" warning dialog prevent loss of unsaved data
- [added] Automatic saving of the selected tab index in the request builder and response viewer
- [improved] Better visual styling
- [improved] HTML parser when extracting and validating HTML through CSS selectors
- [improved] JSON backup file validation
- [improved] Storage read performance and data loading time
- [fixed] Can't set User-Agent, Origin, Referer and some other client headers
- [fixed] No assignments text is shown in response viewer after adding first assignment
- [fixed] Extracted value is not shown in the assignment tab of the response viewer
- [fixed] Unnecessary warning when importing response data from a JSON data file and the response contains no body
v1.4.1
- [added] Add HTML assertions through CSS selectors
- [improved] Add response caching for improved assertion performance
- [improved] Add debouncing of assertion validity checks to improve performance
- [improved] Improve assertion and assignment result state format
- [fixed] XML path resolution
- [fixed] The 'contains key' and 'does not contain key' assertions break when no JSON object
- [fixed] Regex assertion error
v1.4:
- [added] Ability to move request body panel into a tab
- [added] HTTP status code in history panel
- [added] Support for assertions inside requests
- [added] Support for assignments inside requests
- [improved] Single Servistate tab per window but multiple extension instances on different Chrome windows
- [improved] UX for better productivity
- [fixed] Broken header layout with small browser width
- [fixed] Binary response with zero bytes still shows the download and save panel
- [fixed] Error when showing request stats if the response has no data
- [fixed] Incorrect URL parsing when URL has a #hash part
- [fixed] Issue with file data when importing
- [fixed] Export breaks if there are errors in the error log
v1.3.1:
- [improved] Show last saved response when loading a request from storage
- [fixed] Redirects do not show up in responses loaded from history
- [fixes] Redirects do not show up in the response HTTP message preview
v1.3:
- [added] Highlighting for JavaScript, TypeScript and CoffeScript responses
- [added] Highlighting for CSS, SASS, LESS and Stylus responses
- [added] Working indicator when retrieving data
- [improved] Improve formatted response rendering performance
- [improved] Ability to edit project name and description
- [fixed] Mime type application/javascript and other script responses are identified as binary
- [fixed] Saving a request from a project to another project opens the unsaved changes dialog
v1.2.2:
- [fixed] Work around a possible bug in Chrome 49, preventing the extension tab from focusing
v1.2:
- [added] Keep response data in history and include an opt-out setting
- [added] Modified indicator when editing a saved request
- [added] Request abort behavior
- [added] Loading indicator for long-running data access operations
- [improved] Remove downloads extension permission
- [fixed] Standardize content length measurement to use binary response size
v1.1:
- [added] Auto-complete request URL from history
- [added] Auto-complete the Content-Type header with common MIME types
- [added] Auto-complete the Accept-Encoding header with common encodings
- [added] Auto-complete the Cache-Control header with supported cache parameters
- [added] Auto-complete header key and value from previously used
- [added] Auto-complete post data keys from previously used
- [added] Preview request as HTTP message
- [added] Preview request as cURL command
- [added] Preview request as jQuery.ajax() javascript code
- [added] Preview request as XMLHttpRequest javascript code
- [added] Handle file downloads and binary responses
- [added] Content size indicator in response view
- [added] Preview response in basic HTTP response message format
- [added] Copy to clipboard buttons in request and response preview panels
- [improved] Reduce whitespace on smaller screens
- [improved] Wrap text by default in editors and multiline textboxes
- [improved] Improve interactivity when sending requests
- [improved] Welcome screen and in-app version history dialog
- [improved] Improve logic for navigating from a history item to a saved request
- [fixed] Requests from history do not properly restore the 'Redirects' setting
- [fixed] Request model is not marked as dirty when removing headers and post data
- [fixed] Stats refresh button is shown even for invalid requests
- [fixed] Incorrect navigation from history to saved request
- [fixed] Broken breadcrumb when selecting a history item from a deleted project
- [fixed] Tab settings are not propagated to the formatted JSON response viewer
- [fixed] Query string decoding throws with invalid encoding characters
- [fixed] Prevent script execution when previewing HTML responses
Latest reviews
Opcional no is bom e ruim
i love you Developer
Good job！ If the developer can give a name to every request will be better.
It's free and it is very (!) useful. The only drawback is that if a response is large (> 500kb) for example JSON data, the app basically becomes unusably slow and the browser frequently asks to terminate the app. If that problem could be resolved (maybe by doing paging or showing a button "load all" for response data) the tool would get 5 stars from me. I'd also be willing to pay for this tool.
jjjj
Simple but powerfull tool. Respect to the developer(s). I'm missing one features, that would make my life easier: The possibility to group requests inside projects. If you have an large project with all it's rest operations, you will be lost. But anyway, thanx for this extension.
Excellent, it's a huge help for me if the developer could support importing Postman's data.
Good
Can you please add in settings page charset option?
Probably the BEST rest client I've ever used
nice
Looks, great, has a beautiful white UI, projects feature is awesome
Awesome!
Works great, if it pops up. But, sometime it just won't pop up.
挺好用的
Очень удобное расширение. Можно сохранять, группировать параметры запросов, экспортировать и т.п. Неудобство только с запуском расширения - сначала надо открыть правой кнопкой, Недостаток только с запуском связан - запустить сначала надо правой кнопкой сайт, а затем только запустить.
It's very good
Often unable to start
Very useful tool
Супер расширение, давно искал подобное
Best tool for API tests
great plugins, but sometime stuck on starting, it won't launch. my case is mac, no other platform testing
Really good tool. Saved me a lot of time. Thank you.
Incredibly useful software. Far far better that most of the built-in HTTP clients that I ever used.
Great HTTP requester if you need requests after you are authenticated to web within Chrome
good one
страница расширения открывается не сразу нужно несколько раз нажать значок
запускается раз на 20-й, хз что такое
Норм клиент
I have to reinstall it every time it auto-syncs to a different device because it doesn't work. Great tool otherwise
