# HTML Meta Tag Integration Add OpenTentacle Labels to any HTML page using `` tags. ## Basic usage ```html ``` ## Full example with optional fields ```html ``` ## Tag reference | Tag | Required | Value | |---|---|---| | `otl:version` | Recommended | Spec version, e.g. `1` | | `otl:label` | **Yes** | Space-separated label string(s) | | `otl:note` | No | Free-text description of AI usage (max 280 chars) | | `otl:labeled-by` | No | Creator name or organization | | `otl:labeled-at` | No | ISO 8601 date | ## Validation Labels must match the pattern: `OTL:[HACGX]-(txt|img|vid|aud|code|mix)` A label validator is available at: `https://labels.opententacle.com/validate`