---
title: "check_variable_name"
description: "Pre-check whether a variable name is available under a product."
sidebarTitle: "check_variable_name"
lastUpdated: "2026-09-23"
---

> **For AI agents:** the complete documentation index is at [llms.txt](/llms.txt). Append `.md` to any page URL for its markdown version.

{/* GENERATED FILE: do not edit by hand. Regenerate with: node scripts/generate.mjs */}

Pre-check whether a variable name is available under a product.

<Note>
  **Read-only · Calls external systems.** Safe to call: this tool does not modify data.
</Note>

## Parameters

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `name` | string | Yes | Variable name to check |
| `product_id` | number | Yes | Product numeric id (from list_products `id` field, NOT the slug) |

## Example arguments

Illustrative arguments an agent supplies when calling this tool:

```json
{
  "product_id": 0,
  "name": "string"
}
```

## Description

```text
Returns {available: true|false} — call this before create_variable to surface name conflicts client-side instead of seeing an HTTP 400.
```

## Related

- [`create_variable`](/mcp/tools/variables/create_variable)

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