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cURL Command Builder

Build a curl request with headers, body and auth.

  • Free
  • No signup
  • Nothing uploaded
  • No watermark

Your command

curl \
  -L \
  --fail-with-body \
  'https://api.example.com/v1/users'

What each part does

-L
follow redirects — without it curl prints the 301 and stops
--fail-with-body
exit with an error on a 4xx or 5xx, but still print the body. Plain curl exits 0 on an HTTP error, which breaks scripts.

Built in your browser. Nothing you type — paths, hostnames, tokens — is sent anywhere.

How to Use the cURL Command Builder Online

cURL Command Builder: before and after TEXT A YOUR INPUT CURL COMMANDBUILDER DONE A RESULT

cURL Command Builder writes a curl command from a form: the URL, the method (GET, POST, PUT, PATCH or DELETE), a JSON body, a bearer token and any extra header. Follow redirects and fail on HTTP errors are on by default, and each flag is explained beneath the command. It also warns that a token typed into the command ends up in your shell history.

Builds a curl request with headers, body and authentication. Worth remembering that a command containing a bearer token or a password goes into your shell history — clear it afterwards, or prefix the command with a space where your shell is configured to skip those.

No software to install Free Works on any device

Step-by-Step Guide to Using the cURL Command Builder

  1. 1. Choose what you want the command to do, and fill in the parts it needs

  2. 2. The result is built as you type, with each part explained underneath

  3. 3. Copy it and paste it straight into your terminal or client

Try it now

What is the cURL Command Builder?

Builds a curl request with headers, body and authentication. Worth remembering that a command containing a bearer token or a password goes into your shell history — clear it afterwards, or prefix the command with a space where your shell is configured to skip those.

At a glance

  • Inputs: URL, method, JSON body, bearer token, an extra header, verbose, follow, fail on errors
  • Output: A multi-line curl command with -H, -d, -L and --fail-with-body where needed
  • Explained: What -L, --fail-with-body and -d do, under the result
  • Warns: When a token is on the command line, with the --netrc alternative
  • JSON: Sets Content-Type and wraps the body in single quotes so the shell leaves it alone
  • Price: Free, no account

Why Use Text Tools Online?

Counting words, changing case, pulling emails out of a page or writing an amount in words are small jobs that eat time by hand. These tools do them the moment you paste, and the text stays in your browser.

“Paste once, and let the tool do the fiddly part.”
  • Counts as you type
  • Lists sorted and cleaned
  • QR codes for anything
  • Cheque amounts in words
  • Case changed in one click
  • Emails and links pulled out
  • Citations in APA or Chicago
  • Handy commands for developers

Popular Uses for Text Utilities

Short, repetitive text jobs are what these tools were made for.

  • Essay word limits Check that an essay or application answer is within the word or character limit.
  • Fixing capital letters Turn text typed in CAPS LOCK into normal sentence case without retyping it.
  • Collecting contacts Pull every email address or phone number out of a long message or page.
  • Writing cheques Get a rupee or dollar amount written correctly in words for a cheque or invoice.
  • QR codes Make a QR code for a website link, contact card, email address or event.
  • Reference lists Format a book or website reference in APA or Chicago style for an assignment.
  • Tidying lists Sort lines alphabetically, remove repeats or add numbers to a pasted list.
  • Command helpers Build a cron schedule, git command or chmod setting without searching the manual.

What You Can Do with the cURL Command Builder

Every flag is explained, including the ones that make it irreversible

Builds the command from what you want to happen, rather than expecting you to recall the flags

Explains each flag in the result, so the command is understood before it is run

Why Use ToolXkit for cURL Command Builder?

Your files stay with you

Everything runs inside your browser. Nothing you open or type is uploaded to a server.

Writing and Text Tools for Different Users

Students

Count words, format citations and tidy notes before submitting coursework.

Writers and bloggers

Change case, find repeated words and check length before publishing a piece.

Office workers

Clean up pasted lists, find and replace names and write amounts in words.

Marketers

Extract emails, links and hashtags from pages and make QR codes for campaigns.

Developers

Encode Base64, build cron lines and generate git and shell commands quickly.

Accountants

Write invoice and cheque amounts in words and tidy columns of pasted figures.

Best Times to Clean Up Text

Text tools save time when you are:

  • Keeping to a word limit
  • Fixing text typed in capitals
  • Building a contact list from emails
  • Writing out a cheque
  • Printing a QR code poster
  • Finishing a reference list
  • Removing repeats from a list
  • Setting up a scheduled job

Tips and Good to Know

  1. It does not send the request. Paste the command into a terminal to actually run it and see the response.

  2. One extra header at a time. Add more by repeating -H on the pasted command.

  3. Form uploads, cookies, proxies and client certificates are not covered; those flags you add by hand.

  4. Use a placeholder for the token here and set the real value in an environment variable. A production token should not be typed into any web page.

Frequently Asked Questions

Answers to common questions about this tool.

Do I need to install anything to use the cURL Command Builder?

No. cURL Command Builder runs entirely in your browser — there is nothing to download, no extension and no desktop program. It works the same on Windows, macOS, Linux, Android and iPhone.

Is it safe to use the cURL Command Builder online?

Safer than the usual alternative, yes. Most online tools upload your file to a server you know nothing about, where it sits until someone deletes it. Here the file never leaves your device — the processing happens in the page itself, so there is no server copy to leak, retain or sell.

Is my text sent anywhere when I use cURL Command Builder?

No. The text you paste is handled in your browser and never leaves the page. That makes it safe for drafts, customer lists and anything else you would rather keep to yourself.

Is there a limit on how much text I can paste?

The site sets none. Long documents are handled by your own device, so a whole book may be slow on an older phone. Articles, essays and long lists are no trouble.

Can I use cURL Command Builder without making an account?

Yes. There is no login, no email to hand over and no daily limit. Open the page, paste or type, and copy or download the result when it is ready.

Why does my word count differ from Microsoft Word?

Programs treat hyphenated words, numbers and symbols a little differently. The gap is usually a few words in a long piece. If a teacher or portal sets a limit, stay a little under it to be safe.

Do the QR codes made here expire?

No. The information is stored directly in the pattern, with no redirect through our servers, so the code keeps working for as long as the link or text inside it stays valid.

Further reading

  • Unicode Consortium The body that sets how letters, symbols and emoji from every language are stored as text.
  • Letter case (Wikipedia) The rules and names for upper case, lower case, title case and the styles programmers use.
  • Base64 (MDN) A plain explanation of Base64, the encoding used to carry files and images as text.

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