DevTools

DevTools is a set of small utilities for the conversions and checks a developer does all day, plus a list of what is listening on your ports. Everything runs on your computer and nothing is sent anywhere.

Where it is

Superpowers › DevTools › Open, in the Developer category. The card is always shown: there is no switch for it in Settings › Integrations. The page has two tabs, Utilities and Ports.

How to use it

1. In Utilities, pick a Tool.
2. Paste your text in Input. Some tools show one more field, such as Algorithm or Second text.
3. Click Run, or press ⌘↩Ctrl+Enter in the input.
4. Read the Output and click Copy output.

When the input looks like a job for another tool, for example a JWT or a JSON document, a line offers Switch and run.

Utilities

There are 13 tools.

Tool	What it does
Format JSON	Pretty-prints JSON.
Minify JSON	Removes the whitespace.
Query JSON	Returns the value at Path in the JSON, such as items[0].name.
Decode JWT	Shows the header and payload, when the token expires and whether it already has.
Base64 encode, Base64 decode	Converts text to this encoding and back.
URL encode, URL decode	Escapes text for a URL and back.
Hash	Hashes the text with the Algorithm you pick: sha256, sha512, sha1 or md5.
UUID	Creates a new UUID. It needs no input.
Timestamp	Converts a Unix time or an ISO date to both forms. Empty means now.
Test regex	Lists each match of the Pattern (Rust regex) with its position.
Compare texts	Shows the difference between Input and Second text.

The input can be up to 1 MB. A long result is cut, and the page says it is showing the first part.

Ports

Ports lists every process that is listening on a TCP port on your computer, with the Port, the Process and the Command that started it. Use the filter to search by port, process or command, and Refresh to read the list again.

To free a port:

1. Click Stop on its row.
2. Read which processes will be ended. Unsaved work in them is lost.
3. Click Stop process, or press escEsc to cancel.

OmniGet refuses to stop itself or a system process.

For AI agents

Two tools of the MCP server do the same work:

• dev_util runs one utility chosen by op (json_format, jwt_decode, hash, regex_test, text_diff and the rest). hash can also take a file path. The output is cut at 8,000 characters and regex_test returns 50 matches unless the agent asks for more.
• dev_ports lists listeners with op=list and ends one with op=kill, by port or by process id. Without confirm=true it only describes what it would end.

Listing and the utilities need the devtools_read permission; ending a process needs devtools_write. From a terminal, omniget-cli tool dev_ports op=list calls the same tool while the app is running. See Command line.

Shortcuts

Keys	What they do
⌘↩Ctrl+Enter	Run the tool, from the input
escEsc	Close the question before stopping a process

Common problems

An error ends with “Next step:”

Errors on this page come with a suggestion. Fix what the message names and click Run again.

“Nothing matched.”

The pattern or the JSON path found nothing in the input. Patterns use the Rust regex syntax, which has no look-around or backreferences.

“Could not stop PID”

The system refused, usually because the process belongs to another user, or the process was already gone. Click Refresh to see the current list.

“Nothing is listening on a TCP port right now.”

No process on this computer has a TCP port open that your user can see.