> ## Documentation Index
> Fetch the complete documentation index at: https://upstash.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# ACL CAT

> List command categories.

Use `ACL CAT` to discover the category names usable in [`ACL SETUSER`](/docs/redis/commands/server/acl-setuser) rules such as `+@read` or `-@dangerous`.

Called without an argument, it returns every category name the server knows, for example `read`, `write`, `keyspace`, `dangerous`, `admin`, `scripting`, and the categories for individual data types such as `string`, `hash`, or `json`. Called with a category name, it instead returns the commands that belong to that category, which is the fastest way to check exactly what a rule like `+@json` grants before applying it to a user.

## Syntax

```redis theme={"system"}
ACL CAT [category]
```

## Arguments

| Argument   | Required | Repeatable | Description                                                                       |
| ---------- | -------- | ---------- | --------------------------------------------------------------------------------- |
| `category` | No       | No         | When given, list the commands in this category instead of listing category names. |

## Important points

* An unknown category name returns an error rather than an empty list.

## Response

The reply reports the result of the operation. Error replies have the same shape in RESP2 and RESP3 and are surfaced as exceptions by the SDKs below.

| Protocol | Reply                 |
| -------- | --------------------- |
| RESP2    | Array of bulk strings |
| RESP3    | Array of bulk strings |

<Note>
  Client libraries often decode bulk strings, maps, sets, and numeric strings into language-native values. The table describes the Redis wire reply.
</Note>

## Examples

TCP examples use the TLS `REDIS_URL` from the Upstash console. REST examples use `UPSTASH_REDIS_REST_URL` and `UPSTASH_REDIS_REST_TOKEN`.

<AccordionGroup>
  <Accordion title="Redis CLI" icon="terminal">
    ```bash theme={"system"}
    ACL CAT read
    ```
  </Accordion>

  <Accordion title="@upstash/redis" icon="node-js" iconType="brands">
    <Note>
      This command is not supported yet in `@upstash/redis`.
    </Note>
  </Accordion>

  <Accordion title="upstash_redis" icon="python" iconType="brands">
    <Note>
      This command is not supported yet in `upstash_redis`.
    </Note>
  </Accordion>

  <Accordion title="ioredis" icon="node-js" iconType="brands">
    ```ts theme={"system"}
    import Redis from "ioredis";

    const redis = new Redis(process.env.REDIS_URL!);
    const result = await redis.acl("CAT", "read");
    console.log(result);
    ```
  </Accordion>

  <Accordion title="node-redis" icon="node-js" iconType="brands">
    ```ts theme={"system"}
    import { createClient } from "redis";

    const client = await createClient({ url: process.env.REDIS_URL })
      .on("error", console.error)
      .connect();
    const result = await client.aclCat("read");
    console.log(result);
    ```
  </Accordion>

  <Accordion title="redis-py" icon="python" iconType="brands">
    ```python theme={"system"}
    import os
    import redis

    client = redis.from_url(os.environ["REDIS_URL"])
    result = client.acl_cat("read")
    print(result)
    ```
  </Accordion>

  <Accordion title="go-redis" icon="golang" iconType="brands">
    ```go theme={"system"}
    package main

    import (
        "context"
        "fmt"
        "os"

        "github.com/redis/go-redis/v9"
    )

    func main() {
        opts, err := redis.ParseURL(os.Getenv("REDIS_URL"))
        if err != nil {
            panic(err)
        }
        client := redis.NewClient(opts)
        result, err := client.ACLCatArgs(context.Background(), &redis.ACLCatArgs{
            Category: "read",
        }).Result()
        if err != nil {
            panic(err)
        }
        fmt.Println(result)
    }
    ```
  </Accordion>

  <Accordion title="jedis" icon="java" iconType="brands">
    ```java theme={"system"}
    import java.net.URI;

    import redis.clients.jedis.Jedis;

    try (Jedis jedis = new Jedis(new URI(System.getenv("REDIS_URL")))) {
      Object result = jedis.aclCat("read");
      System.out.println(result);
    }
    ```
  </Accordion>

  <Accordion title="redis-rs" icon="rust" iconType="brands">
    ```rust theme={"system"}
    use redis::TypedCommands;

    fn main() -> redis::RedisResult<()> {
        let url = std::env::var("REDIS_URL").expect("REDIS_URL is not set");
        let client = redis::Client::open(url)?;
        let mut connection = client.get_connection()?;

        let result = connection.acl_cat_categoryname("read")?;
        println!("{result:?}");
        Ok(())
    }
    ```
  </Accordion>
</AccordionGroup>


## Related topics

- [ACL SETUSER](/docs/redis/commands/server/acl-setuser.md)
- [ACL SAVE](/docs/redis/commands/server/acl-save.md)
- [ACL LOAD](/docs/redis/commands/server/acl-load.md)
- [ACL LOG](/docs/redis/commands/server/acl-log.md)
- [ACL GENPASS](/docs/redis/commands/server/acl-genpass.md)