We do not store your data. All processing happens in your browser.

Static + Browser-Only

Mask cURL Commands Online

Paste a cURL command and mask common sensitive headers, query values, and body fields in your browser before sharing it with AI tools, tickets, chats, or documentation.

All processing happens locally in your browser. No server processing required.

Input

Raw cURL command

Tip: paste text or drag and drop a file here.

Paste or drag and drop a file, then run the tool.

Output

Masked cURL

Masked payload will appear here

Use Cases

Why use a cURL masking tool?

Use this tool when API request examples need to be shared without exposing raw tokens, headers, cookies, query values, or request body fields first.

  • Mask sensitive headers, query strings, and payload values in cURL commands
  • Redact authorization headers, cookies, tokens, emails, phone numbers, and IDs
  • Keep masking local to the browser instead of sending API examples to a backend
  • Useful for support, debugging, tickets, docs, and vendor communication

Masking Logic

How to mask sensitive values in cURL

Mask Payload checks common sensitive field names in headers, query strings, and inline JSON body values, then applies pattern-based masking for emails, phones, and tokens embedded in text.

  • Header-aware masking for Authorization, Cookie, and API keys
  • Query and body masking for common sensitive keys
  • Readable output with copy/download options for clean handoff

Privacy Detail

Does this cURL masking tool upload data?

This tool runs as a static browser page. It processes cURL text in client-side JavaScript in the current tab. No form submission, fetch request, XMLHttpRequest, or masking API call is used during the masking flow.

  • No form submission is used for the masking flow.
  • No fetch, XMLHttpRequest, or API call runs during masking.
  • The page uses local JavaScript parsing and regular expressions in the current tab.
  • The cURL command is only written back to the output field unless you copy or download it yourself.
  • The masking flow does not store the payload in browser local storage.

FAQ

Who should use an API request sanitizer?

Does this tool upload cURL anywhere?

No. The masking runs entirely in the browser on the current page.

Can I add custom masking fields?

Yes. Add custom field names such as internalNote, caseNumber, or vendorRef and mask again.

Who is this tool for?

Mask Payload is for engineers, support teams, API specialists, and anyone who needs to share request examples more safely.

Why cURL command masking matters before sharing API examples

Developers frequently paste cURL examples into docs, tickets, AI prompts, or support conversations. Those commands often contain bearer tokens, cookies, query values, API keys, and request body fields that should not be exposed in raw form.

A browser-based cURL masker helps teams keep request examples readable while reducing the risk of leaking live credentials or customer data in collaboration workflows.

Examples

Example input and output

These short examples show the kind of input this page is built for and the kind of cleaned result you can expect before sharing data externally.

Example Input Sample data before masking or extraction 
curl -H 'Authorization: Bearer eyJ...' 'https://api.example.com?email=john.doe@example.com'
Example Output Sanitized or extracted result 
curl -H 'Authorization: ****' 'https://api.example.com?email=****'

Tool Directory

Browse masking tools by category

Find related browser-only masking tools for structured payloads, requests, tokens, config files, logs, infrastructure secrets, web payloads, security review, and practical guides.