Variable Name Converter API

POST

Align variable names across languages and naming conventions.

Variable Name Converter transforms variable names between different naming conventions including camelCase, snake_case, PascalCase, and kebab-case.

Try it — live request, no key required

Request

POSTapi.apiverve.com/v1/variablenameconverter

Body

variablesstring

tostring

Verification

Format

No key required to try it. Get a key to use it in your app.

Example

{
  "status": "ok",
  "error": null,
  "data": {
    "results": [
      {
        "original": "myVariableName",
        "converted": "my_variable_name"
      },
      {
        "original": "another_var_name",
        "converted": "another_var_name"
      },
      {
        "original": "SomeClassName",
        "converted": "some_class_name"
      },
      {
        "original": "kebab-case-name",
        "converted": "kebab_case_name"
      },
      {
        "original": "CONSTANT_VALUE",
        "converted": "c_o_n_s_t_a_n_t__v_a_l_u_e"
      }
    ],
    "count": 5,
    "targetFormat": "snake_case"
  }
}

About the Variable Name Converter API

Perfect for code refactoring, style guide enforcement, and converting between different programming language naming standards.

What people use it for

Code Refactoring: Convert variable names when refactoring code between different style guides
Language Migration: Migrate variable naming between programming languages with different conventions
Style Enforcement: Enforce consistent naming conventions across codebases
Bulk Conversion: Convert multiple variable names simultaneously for large-scale refactoring

Ways to call it

One endpoint, many ways in — REST with JSON, XML, YAML and CSV, plus GraphQL and an MCP interface for AI agents.

JSON: Default REST response
XML: Markup format
YAML: Human-readable
CSV: Tabular export
GraphQL: Query language
MCP: For AI agents

View all integrations →

Other ways to use Variable Name Converter

Same data, same APIVerve account, same credit balance — one key works on all of them.

Give it to an AI agentConnect over MCP and your agent calls it as a native tool — Claude, Cursor, ChatGPT.on VerveKit

Questions.

Common questions about the Variable Name Converter API.

Read the docs →

Which naming conventions can I convert between?

Variable Name Converter supports transformations across camelCase, snake_case, PascalCase, and kebab-case. You supply the variable names and specify the target convention you want them converted to.

Does the response include the original variable names alongside the conversions?

Yes. Each entry in the results list returns both the original variable name and the converted value, along with the total count and target format.

How many variable names can I submit in one request?

You can send up to 100 variable names in a single call using the variables array. For larger refactoring batches or codebases, divide your names across multiple requests.

Are the converted variable names included on the Free plan?

The results array containing the converted variable names is a premium field. While the Free plan allows testing basic responses, viewing the full converted values requires the Starter plan or above.

How far does the Starter plan go for converting variable names?

Each API call uses 2 credits, so Starter provides 100,000 calls per month. With up to 100 variables per request, that covers up to 10 million variable conversions, working out to about $0.30 per 1,000 calls. The Free plan provides 100 calls per month.

Request parameters — POST /v1/variablenameconverter

Sent as JSON in the request body. Premium parameters are accepted on every plan but only take effect on plans that include them. Anything not listed here is dropped rather than passed through.

Required

Parameter	Type	Example	Description
`variables`Required	array	`["myVariable","another_var"]`	Array of variable names to convert (max 100). Every entry must be a string.
`to`Required	string	`camelCase`	Target naming convention `camelCasePascalCasesnake_casekebab-caseCONSTANT_CASE`

Example request

curl -X POST "https://api.apiverve.com/v1/variablenameconverter" \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"variables":["myVariableName","another_var_name","SomeClassName","kebab-case-name","CONSTANT_VALUE"],"to":"snake_case"}'

Authentication

Send your key in the x-api-key header. That is the only auth step — no token exchange, and no per-endpoint scope to configure.

Header	When	Value
`x-api-key`Required	Every request	Your API key. Header names are case-insensitive, so `X-API-Key` is the same header.
`Authorization`Alternate	Instead of the above	`Bearer <key>` — for clients that only expose bearer auth. Resolves to the same account and the same billing.
`content-type`Required	POST body	`application/json`

401 is the only auth verdict

A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.

Response — POST /v1/variablenameconverter

Every APIVerve endpoint returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape.

Sample response

{
  "status": "ok",
  "error": null,
  "data": {
    "results": [
      {
        "original": "myVariableName",
        "converted": "my_variable_name"
      },
      {
        "original": "another_var_name",
        "converted": "another_var_name"
      },
      {
        "original": "SomeClassName",
        "converted": "some_class_name"
      },
      {
        "original": "kebab-case-name",
        "converted": "kebab_case_name"
      },
      {
        "original": "CONSTANT_VALUE",
        "converted": "c_o_n_s_t_a_n_t__v_a_l_u_e"
      }
    ],
    "count": 5,
    "targetFormat": "snake_case"
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Field	Type	Example	Description
`results`Premium	array[5]		Array of converted variable names with original and converted values
`original`Premium	string	`"myVariableName"`	Original variable name before conversion
`converted`Premium	string	`"my_variable_name"`	Variable name after conversion to target format
`count`	number	`5`	Number of variables converted in the request
`targetFormat`	string	`"snake_case"`	Target naming convention used for conversion

Response headers

Every response carries your balance, so your own code always knows where it stands without polling anything. All four are exposed to browsers through CORS.

Header	What it carries
`x-api-remaining-credits`	Credits left in the current cycle
`x-api-credits-used`	Credits spent in the current cycle
`x-api-max-credits`	The allowance for the cycle
`x-api-version`	Version of the endpoint that answered

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change.

Status	Meaning	What to do
`400`	Input was rejected	Read `error`; it names the parameter that has to change.
`401`	Key missing or invalid	Check the header name and the key value.
`403`	Key valid, but not permitted here	A key restriction or an IP allow-list — never a bad key.
`429`	Rate limited, or out of credits	Read `error` to tell them apart, then back off or top up.

What a call costs — 2 credits per call

Credits are shared across every APIVerve API — one balance, one key, one bill. Failed requests never count against it, so a rejected input costs nothing.

Plan	Per month	Credits	Variable Name Converter calls	Per 1,000 calls
Free	Free	200	100	Free
Starter	$29.99	200,000	100,000	$0.30
Pro	$99.99	1,000,000	500,000	$0.20
Mega	$299.99	4,000,000	2,000,000	$0.15

Calls are what the credits buy at this API's rate — spend them here, on any of the other APIs, or across both. Nothing is reserved per endpoint.

Compare all pricing tiers →

Call it from cURL — POST /v1/variablenameconverter

No SDK to install — this is a plain HTTPS call to /v1/variablenameconverter with your key in the x-api-key header. Swap in a real key and it runs as-is.

cURL

1
2

curl "https://api.apiverve.com/v1/variablenameconverter" \
  -H "x-api-key: YOUR_API_KEY"

Resources

GitHubapiverve/variablenameconverter-apiSource, issues and the examples this page is built from.ReferenceVariable Name Converter API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/variablenameconverternpm APIVerve.API.VariableNameConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Node.js — POST /v1/variablenameconverter

Install the Node.js SDK, then call the Variable Name Converter API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — npm

npm install @apiverve/variablenameconverter

Node.js

const res = await fetch("https://api.apiverve.com/v1/variablenameconverter", {
  headers: { "x-api-key": "YOUR_API_KEY" },
});
const { data } = await res.json();
console.log(data);

Resources

npm@apiverve/variablenameconverterThe published Node.js client, versioned and signed.GitHubapiverve/variablenameconverter-apiSource, issues and the examples this page is built from.ReferenceVariable Name Converter API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

APIVerve.API.VariableNameConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Python — POST /v1/variablenameconverter

No SDK to install — this is a plain HTTPS call to /v1/variablenameconverter with your key in the x-api-key header. Swap in a real key and it runs as-is.

Python

import requests

res = requests.get(
    "https://api.apiverve.com/v1/variablenameconverter",
    headers={"x-api-key": "YOUR_API_KEY"},
)
print(res.json()["data"])

Resources

Also published for

@apiverve/variablenameconverternpm APIVerve.API.VariableNameConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from C# / .NET — POST /v1/variablenameconverter

Install the C# / .NET SDK, then call the Variable Name Converter API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — NuGet

dotnet add package APIVerve.API.VariableNameConverter

C# / .NET

using var client = new HttpClient();
client.DefaultRequestHeaders.Add("x-api-key", "YOUR_API_KEY");

var json = await client.GetStringAsync("https://api.apiverve.com/v1/variablenameconverter");
Console.WriteLine(json);

Resources

NuGetAPIVerve.API.VariableNameConverterThe published C# / .NET client, versioned and signed.GitHubapiverve/variablenameconverter-apiSource, issues and the examples this page is built from.ReferenceVariable Name Converter API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/variablenameconverternpm

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Go — POST /v1/variablenameconverter

No SDK to install — this is a plain HTTPS call to /v1/variablenameconverter with your key in the x-api-key header. Swap in a real key and it runs as-is.

req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/variablenameconverter", nil)
req.Header.Set("x-api-key", "YOUR_API_KEY")

res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Resources

Also published for

@apiverve/variablenameconverternpm APIVerve.API.VariableNameConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from PHP — POST /v1/variablenameconverter

No SDK to install — this is a plain HTTPS call to /v1/variablenameconverter with your key in the x-api-key header. Swap in a real key and it runs as-is.

PHP

$ch = curl_init("https://api.apiverve.com/v1/variablenameconverter");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-api-key: YOUR_API_KEY"]);

$response = curl_exec($ch);
echo $response;

Resources

Also published for

@apiverve/variablenameconverternpm APIVerve.API.VariableNameConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Ruby — POST /v1/variablenameconverter

No SDK to install — this is a plain HTTPS call to /v1/variablenameconverter with your key in the x-api-key header. Swap in a real key and it runs as-is.

Ruby

require "net/http"

uri = URI("https://api.apiverve.com/v1/variablenameconverter")
req = Net::HTTP::Get.new(uri)
req["x-api-key"] = "YOUR_API_KEY"

res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |h| h.request(req) }
puts res.body

Resources

Also published for

@apiverve/variablenameconverternpm APIVerve.API.VariableNameConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

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Variable Name Converter API

Try it — live request, no key required

About the Variable Name Converter API

What people use it for

Ways to call it

Other ways to use Variable Name Converter

Questions.

Request parameters — POST /v1/variablenameconverter

Required

Authentication

Response — POST /v1/variablenameconverter

Response fields

Response headers

Errors

What a call costs — 2 credits per call

Call it from cURL — POST /v1/variablenameconverter

Resources

Also published for

Call it from Node.js — POST /v1/variablenameconverter

Resources

Also published for

Call it from Python — POST /v1/variablenameconverter

Resources

Also published for

Call it from C# / .NET — POST /v1/variablenameconverter

Resources

Also published for

Call it from Go — POST /v1/variablenameconverter

Resources

Also published for

Call it from PHP — POST /v1/variablenameconverter

Resources

Also published for

Call it from Ruby — POST /v1/variablenameconverter

Resources

Also published for

Zero-code embed — one snippet, no backend

Changelog — Variable Name Converter API

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