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# specifiedBy

Exposes a URL that specifies the behavior of this scalar.

```graphql theme={null}
directive @specifiedBy(
  url: String!
) on SCALAR
```

### Arguments

#### [<span class="gqlmd-mdx-entity"><code class="gqlmd-mdx-entity-parent">specifiedBy</code>.<code class="gqlmd-mdx-entity-name">url</code></span>](#)<span class="gqlmd-mdx-bullet"> ● </span>[<span class="gqlmd-mdx-entity"><code class="gqlmd-mdx-entity-name">String!</code></span>](/reference/graphql/scalars/string) <mark class="gqlmd-mdx-badge">non-null</mark> <mark class="gqlmd-mdx-badge">scalar</mark>

The URL that specifies the behavior of this scalar.