---
url: >-
  https://adk.nht.io/api/@nhtio/adk/batteries/skills/variables/E_SKILL_TOOL_FAILED.md
description: Raised when a skill tool handler fails during execution.
---

# Variable: E\_SKILL\_TOOL\_FAILED

```ts
const E_SKILL_TOOL_FAILED: CreatedException<[string, string]>;
```

Defined in: [src/batteries/skills/exceptions.ts:61](https://github.com/NHTIO/ADK/blob/v1.20260911.0/src/src/batteries/skills/exceptions.ts#L61)

Raised when a skill tool handler fails during execution.