curl2rsc — Convert curl to MikroTik RouterOS /tool/fetch

Output styles

/tool/fetch (simple): Bare /tool/fetch command — run directly in terminal or script.
:put to terminal: Wraps in :put to print the response body to the terminal.
Save to variable: Stores the response in a global variable $resp for further scripting.
Variable + headers: Like “Save to variable” but also captures response headers.
Output to file: Writes the response body to a file on the RouterOS filesystem.

JSON responses & :deserialize

When the request targets a JSON API, RouterOS can parse the response natively:

:global resp [/tool/fetch url=… as-value output=user]
:global json [:deserialize ($resp->"data") from=json]
:put $json

:deserialize is available in all current RouterOS releases (long-term and newer).

What curl2rsc cannot convert

-L / --location — /tool/fetch does not follow redirects.
--compressed — no automatic decompression support.
Local file uploads (-F @file) — /tool/fetch has no native file-upload support. The generated script uses $[/file get … contents] to read a plain-text file that must already exist on the RouterOS device. Binary files and complex payloads require manually constructing the multipart body using [:convert] and /file commands.
HTTP methods beyond GET, HEAD, POST, PUT, DELETE, PATCH.

Behind the curtain — parsing uses curlconverter with Tree-sitter WASM, entirely in the browser. The RouterOS generator is extracted from tikoci/postman-code-generators. No server is contacted.