Yes there are a couple of standards (albeit some liberties on the definition of standard) that have emerged:

  1. JSON API - JSON API covers creating and updating resources as well, not just responses.
  2. JSend - Simple and probably what you are already doing.
  3. OData JSON Protocol - Very complicated.
  4. HAL - Like OData but aiming to be HATEOAS like.

There are also JSON API description formats:

  • Swagger
    • JSON Schema (used by swagger but you could use it stand alone)
  • WADL in JSON
  • RAML
  • HAL because HATEOAS in theory is self describing.
Answer from Adam Gent on Stack Overflow
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JSON Formatter
jsonformatter.org
Best JSON Formatter and JSON Validator: Online JSON Formatter
JSON Formatter and JSON Validator help to auto format JSON and validate your JSON text.
JSON Parser
Secure JSON Parser is an online JSON Parser tool to Parse, Decode and Visualize JSON data in Tree view. JSON Parser online updated in 2022.
JSBeautifier
Online JS Beautifier helps to Beautify Javascript. This Javascript Beautifier helps to unminify, Save and Share Javascript.
XML Formatter
Online XML Formatter will format xml data, helps to validate, and works as XML Converter. Save and Share XML.
Best JSON Pretty Print Online
Best JSON Pretty Print tool to Make Pretty JSON and JSON Print in color and Save and Share Online.
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JSON Formatter
jsonformatter.curiousconcept.com
JSON Formatter & Validator
The JSON Formatter was created to help folks with debugging. As JSON data is often output without line breaks to save space, it can be extremely difficult to actually read and make sense of it.
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W3Schools
w3schools.com › js › js_json_syntax.asp
JSON Syntax
JSON data is written as name/value pairs (aka key/value pairs).
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Red Hat
docs.redhat.com › en › documentation › red_hat_satellite › 6.2 › html › api_guide › sect-api_guide-understanding_the_json_response_format
2.2. Understanding the JSON Response Format | API Guide | Red Hat Satellite | 6.2 | Red Hat Documentation
Single-object JSON responses are used to show a single object. The object’s unique identifier, :id or :name, is required in the GET request. Note that :name cannot always be used as a unique identifier, but :id can always be used. The format for a single-object JSON response consists of only the object’s attributes.
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JSON Formatter
jsonformatter.org › 1f2489
json response
JSON Formatter and JSON Validator help to auto format JSON and validate your JSON text.
Find elsewhere
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OpenAI Developer Community
community.openai.com › api
Ensure JSON response format - API - OpenAI Developer Community
March 9, 2023 - Something the response will have “JSON:” prepended to it. Sometimes it won’t. Sometimes there will be some other sort of preamble to explain that it’s JSON. A pretty common feature of API’s is to be able to specify a response format. It would make thi...
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MDN Web Docs
developer.mozilla.org › en-US › docs › Web › API › Response › json
Response: json() method - Web APIs | MDN
const myList = document.querySelector("ul"); const myRequest = new Request("products.json"); fetch(myRequest) .then((response) => response.json()) .then((data) => { for (const product of data.products) { const listItem = document.createElement("li"); listItem.appendChild(document.createElement("strong")).textContent = product.Name; listItem.append(` can be found in ${product.Location}. Cost: `); listItem.appendChild(document.createElement("strong")).textContent = `£${product.Price}`; myList.appendChild(listItem); } }) .catch(console.error);
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Cohere
cohere.com › blog › introducing-structured-outputs
Introducing structured outputs with JSON response format
January 8, 2025 - Structured Outputs improves accuracy of JSON generations and is 80x faster than open source implementations.
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ReqBin
reqbin.com › req › 4gvqbdi1 › json-response-format-example
What is the correct JSON Response Format?
December 23, 2022 - For the server to respond in JSON format, include the JSON data in the response message body and specify the "Content-Type: application/json" HTTP header. The server may also set the Content-Length header to indicate the length of the JSON data ...
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Medium
medium.com › @alexanderekb › openai-api-responses-in-json-format-quickstart-guide-75342e50cbd6
OpenAI API responses in JSON format: Quickstart guide | by Alexander Anisimov | Medium
August 20, 2024 - To ensure such presentation and interactivity, the dataset with the questions and answers is retrieved from OpenAI API in JSON format. In real life, such application may be useful if you want to memorize the content of some text better. Here is a high-level overview of the app’s components: ... The most straightforward way to implement API call for this app is to use Chat Completions API (basically the same API call as the one that is used for “text” chats) which should include: additional parameter response_format: { type: "json_object" }
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Microsoft Learn
learn.microsoft.com › en-us › microsoft-edge › web-platform › json-viewer
View a JSON file or server response with formatting - Microsoft Edge Developer documentation | Microsoft Learn
When you open a JSON file or view a JSON HTTP server response in Microsoft Edge, the content is initially displayed as-is: If the JSON content has been minified, with its entire content on a single line with empty spaces removed, the JSON is initially displayed in a dense format, wrapped to the window.
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OData
odata.org › documentation › odata-version-2-0 › json-format
JSON Format (OData Version 2.0) · OData - the Best Way to REST
When represented in a request/response payload as part of an Entry, Complex Type or a standalone construct in a request payload, primitive properties are represented in JSON as a name/value pair, with the name equal to the name of the property and primitive type value formatted as described by the table in the Primitive Types section above.
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JSON:API
jsonapi.org
JSON:API — A specification for building APIs in JSON
The response above contains the first in a collection of “articles”, as well as links to subsequent members in that collection. It also contains resources linked to the article, including its author and comments. Last but not least, links are provided that can be used to fetch or update any of these resources. JSON:API covers creating and updating resources as well, not just responses.
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Jsongrid
jsongrid.com › json-grid
Json Grid Viewer Online - All-in-One Solution
🚀 New! JSONGrid Web Inspector Try our new Chrome DevTools extension to view JSON responses in JSONGrid. Make debugging a breeze! ... Json Grid converts Json to table format, which provide luxury to view complex Json data into friendly table format.
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Json Parser Online
json.parser.online.fr
Json Parser Online
Analyze your JSON string as you type with an online Javascript parser, featuring tree view and syntax highlighting. Processing is done locally: no data send to server.
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JSON Formatter
jsonformatter.org › json-pretty-print
Best JSON Pretty Print Online
Best and Secure JSON Pretty Print works well in Windows, Mac, Linux, Chrome, Firefox, Safari and Edge.
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JSON Formatter
jsonformatter.org › json-parser
JSON Parser Online to parse JSON
Online JSON Parser helps to parse, view, analyze JSON data in Tree View.
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Wyday
wyday.com › limelm › help › api › response.json
JSON Response Format • LimeLM
JSON, or JavaScript Object Notation, ... visit json.org. To return an API response in JSON format, send a parameter "format" in the request with a value of "json"....
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JSON Editor Online
jsoneditoronline.org
JSON Editor Online: edit JSON, format JSON, query JSON
In code mode, you can paste a JSON file in the editor, and click the "Format" button from the menu. In tree mode, you can just paste the file and copy it again: the contents will automatically be formatted.