# DevTools · OmniGet Docs

- URL: https://getomniget.com/docs/devtools
- Updated: 2026-10-19
- OmniGet 1.0.0

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Superpowers

# DevTools

Note

DevTools arrives in OmniGet 1.0.1. Version 1.0.0, the one you can download today, does not have it yet.

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 `⌘↩` (macOS) / `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**. |

Warning

**Decode JWT** only decodes. The signature is not checked, so do not trust the claims of a token you did not verify elsewhere.

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 `esc` (macOS) / `Esc` to cancel.

OmniGet refuses to stop itself or a system process.

## For AI agents

Two tools of the [MCP server](https://getomniget.com/docs/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](https://getomniget.com/docs/cli).

## Shortcuts

| Keys | What they do |
| --- | --- |
| `⌘↩` (macOS) / `Ctrl+Enter` | Run the tool, from the input |
| `esc` (macOS) / `Esc` | 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.

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