> ## Documentation Index
> Fetch the complete documentation index at: https://resq-dependabot-github-actions-github-actions-478e18be3d.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# IsValidVertexId

# Function: isValidVertexId()

> **isValidVertexId**(`id`): `id is string`

Defined in: [graph.ts:693](https://github.com/resq-software/npm/blob/fe2e20ae9db8398a0db1e3218edaabb3cf7004d6/packages/dsa/src/graph.ts#L693)

Validates a vertex ID using Effect Schema

## Parameters

### id

`unknown`

## Returns

`id is string`

True if valid