> ## 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.

# EVAL

> Evaluate a Lua script server side.

## Arguments

<ParamField body="script" type="string" required>
  The lua script to run.
</ParamField>

<ParamField body="keys" type="string[]" required>
  All of the keys accessed in the script
</ParamField>

<ParamField body="args" type="unknown[]" required>
  All of the arguments you passed to the script
</ParamField>

## Response

<ResponseField type="any" required>
  The result of the script.
</ResponseField>

<RequestExample>
  ```ts Example theme={"system"}
  const script = `
      return ARGV[1]
  `
  const result = await redis.eval(script, [], ["hello"]);
  console.log(result) // "hello"

  ```
</RequestExample>