---
title: "vision.face-tag@1 · OpenVibe.Services"
canonical: "https://openvibe.services/docs/contracts/vision.face-tag"
updated: null
---

# vision.face-tag@1 · OpenVibe.Services

HTML: [vision.face-tag@1 · OpenVibe.Services](https://openvibe.services/docs/contracts/vision.face-tag)

# VisionFaceTag `vision.face-tag@1`

Generated at 2026-11-13 06:25:48 UTC from [`openvibe-contracts v0.419.0`](https://github.com/OpenVibers/OpenVibe.Contracts/tree/v0.419.0) and [`openvibe-sdk v0.161.0`](https://github.com/OpenVibers/OpenVibe.SDK/tree/v0.161.0).

- Version: 1.0.0
- Owner: vision
- Visibility: first-party
- Status: active
- Compatibility: backward
- Schema: [`https://openvibe.network/contracts/vision/face-tag.v1.json`](/docs/contracts/vision.face-tag.json)

vision.face-tag@1: one cast tag on a stream: which subject, which channel, which private media reference and when. GET /api/v1/faces/cast/tags lists the caller's own tags; revoking the cast consent removes them.

## Fields

| Field | Type | Required | Description | Constraints |
| --- | --- | --- | --- | --- |
| `id` | string | yes |  | - `pattern ^ftg_[0-9A-HJKMNP-TV-Z]{26}$` |
| `channel` | string | yes |  |  |
| `media_ref` | string | yes |  |  |
| `created_at` | string | yes |  | - `format date-time` |

## Examples

From the contract's own test fixtures: valid ones validate, rejected ones must fail.

 Valid: one

~~~~
{
  "id": "ftg_01J8Z3Q4R5S6T7V8W9X0Y1Z2A4",
  "channel": "live:one",
  "media_ref": "media:a",
  "created_at": "2026-10-29T10:00:00.000Z"
}
~~~~

Rejected: one

~~~~
{
  "id": "ftg_1",
  "channel": "live:one",
  "media_ref": "media:a",
  "created_at": "2026-10-29T10:00:00.000Z"
}
~~~~

## Validate

~~~~
const contracts = require('openvibe-contracts');
contracts.validate('vision.face-tag@1', value);   // { valid, errors: [{ path, message }] }
~~~~