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[GH-ISSUE #1024] Scripts that assign the JSON response.body to true fail #1019

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opened 2026-03-03 19:23:49 +03:00 by kerem · 4 comments

kerem commented

2026-03-03 19:23:49 +03:00

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Originally created by @BenTilbrook on GitHub (Oct 12, 2021).
Original GitHub issue: https://github.com/ProxymanApp/Proxyman/issues/1024

Originally assigned to: @NghiaTranUIT on GitHub.

Scripts that assign the response.body to true fail with an error (see below for error details).

If I wrap the true literal in a JSON object, it works. However, true is valid JSON, and many JSON APIs return only boolean literals.

Here's the full script I'm using:

function onResponse(context, url, request, response) {
  response.body = true;
  response.headers["Content-Type"] = "application/json"
  response.statusCode = 200
  return response;
}

Proxyman version

2.33.0 (23300)

macOS Version

11.6 (20G165)

Steps to reproduce

Create a script
Enter the script content above
Save and activate it
Exercise the script by requesting the endpoint

Expected behavior

The response body is true

Actual behavior

An error is reported:

❌Error: Invalid Body JSON Object. Please verify the body is a valid JSON. (Content-Type=application/json)

Originally created by @BenTilbrook on GitHub (Oct 12, 2021). Original GitHub issue: https://github.com/ProxymanApp/Proxyman/issues/1024 Originally assigned to: @NghiaTranUIT on GitHub. Scripts that assign the `response.body` to `true` fail with an error (see below for error details). If I wrap the `true` literal in a JSON object, it works. However, `true` is valid JSON, and many JSON APIs return only boolean literals. Here's the full script I'm using: ```javascript function onResponse(context, url, request, response) { response.body = true; response.headers["Content-Type"] = "application/json" response.statusCode = 200 return response; } ``` ### Proxyman version `2.33.0 (23300)` ### macOS Version `11.6 (20G165)` ### Steps to reproduce 1. Create a script 2. Enter the script content above 3. Save and activate it 4. Exercise the script by requesting the endpoint ### Expected behavior The response body is `true` ### Actual behavior An error is reported: ``` ❌Error: Invalid Body JSON Object. Please verify the body is a valid JSON. (Content-Type=application/json) ```

kerem added the

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2026-03-03 19:23:49 +03:00

kerem commented

2026-03-03 19:23:50 +03:00

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@NghiaTranUIT commented on GitHub (Oct 12, 2021):

I wasn't aware that true/false could be a valid JSON object 🙀

I'm fixing it and send you a beta build soon 👍

@NghiaTranUIT commented on GitHub (Oct 12, 2021): I wasn't aware that true/false could be a valid JSON object 🙀 I'm fixing it and send you a beta build soon 👍

kerem commented

2026-03-03 19:23:50 +03:00

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@NghiaTranUIT commented on GitHub (Oct 12, 2021):

Hey @BenTilbrook please try this beta buid: https://proxyman.s3.us-east-2.amazonaws.com/beta/Proxyman_2.33.0_Fix_Primitive_JSON_Scripting.dmg

You can use primitive json 👍

@NghiaTranUIT commented on GitHub (Oct 12, 2021): Hey @BenTilbrook please try this beta buid: https://proxyman.s3.us-east-2.amazonaws.com/beta/Proxyman_2.33.0_Fix_Primitive_JSON_Scripting.dmg You can use primitive json 👍

kerem commented

2026-03-03 19:23:50 +03:00

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@BenTilbrook commented on GitHub (Oct 14, 2021):

@NghiaTranUIT I can confirm this fixes the problem. Thanks for the super quick response!

@BenTilbrook commented on GitHub (Oct 14, 2021): @NghiaTranUIT I can confirm this fixes the problem. Thanks for the super quick response!

kerem commented

2026-03-03 19:23:50 +03:00

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@thientan21 commented on GitHub (Oct 26, 2021):

@BenTilbrook @NghiaTranUIT you guys are absolutely amazing 😊

@thientan21 commented on GitHub (Oct 26, 2021): @BenTilbrook @NghiaTranUIT you guys are absolutely amazing 😊