file-validator git:20260903.e815686A

Immutable. This exact content is served forever at /api/v1/blob/d4e1103bd681a576.

---
name: file-validator
description: Validate a filename extension without opening any filesystem path
license: Apache-2.0
allowed-tools: []
---

# File Validator

Use [validate.py](validate.py) to check whether a filename has an allowed
extension. The helper performs no I/O.