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Collabs
Channels that do collabs: fastest growing, partners and new collab videos.
Channels that do collabs, meaning videos YouTube lists under more than one channel. Data comes from Algrow's collab sweep, which checks channels' Videos tabs around the clock. Growth figures refresh every 6 hours; partners and videos show up as soon as the sweep finds them.
GET/api/collabs/fastest-growing
Channels that do collabs, ranked by subscriber or view growth over the last 7 or 30 days. A collab is a video YouTube lists under more than one channel. Each channel comes with its growth, how many different channels it has collabed with (partners), how many collab videos it has and when its latest one went out. Growth figures refresh every 6 hours; computed_at and growth_through say how fresh they are. Use sort=pct with max_subscribers to find small channels growing fast. Data comes from Algrow's collab sweep, which checks channels' Videos tabs around the clock for videos YouTube lists under more than one channel.
Query Parameters
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
| metric | string | Optional | subs | subs or views. |
| period | integer | Optional | 7 | Growth window in days: 7 or 30. |
| sort | string | Optional | gain | gain ranks by absolute growth. pct ranks by growth as a percentage of where the channel started the period, and only counts channels with at least 1,000 subscribers unless you set min_subscribers. |
| min_subscribers | integer | Optional | none (1,000 with sort=pct) | Only channels with at least this many subscribers. |
| max_subscribers | integer | Optional | none | Only channels with at most this many subscribers. |
| min_partners | integer | Optional | 1 | Only channels that have collabed with at least this many different channels. |
| active_days | integer | Optional | none | Only channels with a collab video published in the last N days. |
| language | string | Optional | any | Primary language, e.g. English, Spanish. |
| page | integer | Optional | 1 | Page number, up to 50. |
| per_page | integer | Optional | 25 | Results per page, max 100. |
400 Bad metric, period or sort
{
"success": true,
"metric": "subs",
"period_days": 7,
"sort": "pct",
"page": 1,
"per_page": 25,
"count": 25,
"has_more": true,
"computed_at": "2026-10-04T06:00:12+00:00",
"growth_through": "2026-10-03",
"channels": [
{
"channel_id": "UCq3Ci-h945sbEYXpVlw7rJg",
"name": "Rachel Bakes",
"handle": "@rachelbakes",
"avatar_url": "https://yt3.ggpht.com/...",
"url": "https://www.youtube.com/@rachelbakes",
"subscriber_count": 18400,
"view_count": 2310000,
"gain": 6100,
"gain_pct": 49.59,
"subs_7d": 6100,
"views_7d": 940000,
"subs_30d": 9800,
"views_30d": 1620000,
"partners": 3,
"collab_videos": 5,
"last_collab_published": "2026-10-01",
"language": "English",
"category": "Food and Cooking",
"monetized": true
}
]
}curl "https://api.algrow.online/api/collabs/fastest-growing?sort=pct&max_subscribers=50000.=7" \ -H "Authorization: Bearer YOUR_API_KEY"
GET/api/collabs/channels/:channel_id
One channel's collab partners and collab videos, newest first. has_new_collab is true when the channel has a collab video published in the last since_days days. A publish date in the future is an upcoming premiere, counted in upcoming_collabs and marked upcoming on the video. Each partner says how many videos the two made together and when they last did. Each video lists its host (the channel it was uploaded to) and every collaborator. growth is the channel's 7 and 30 day growth, refreshed every 6 hours, or null if Algrow has none. checked: false means Algrow has not scanned this channel for collabs yet and no scanned channel lists it as a collaborator.
Path Parameters
| Name | Type | Description |
|---|---|---|
| channel_id | string | 24-char YouTube channel ID (starts with UC). Use POST /api/channels/resolve first for a @handle or URL. |
Query Parameters
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
| since_days | integer | Optional | 7 | A collab published in the last N days counts as new. 1 to 365. |
| limit | integer | Optional | 30 | Max partners and max videos returned, up to 100. The totals always count everything. |
400 Invalid channel_id
{
"success": true,
"channel": {
"channel_id": "UCq3Ci-h945sbEYXpVlw7rJg",
"name": "Rachel Bakes",
"handle": "@rachelbakes",
"avatar_url": "https://yt3.ggpht.com/...",
"url": "https://www.youtube.com/@rachelbakes",
"subscriber_count": 18400
},
"checked": true,
"last_checked": "2026-10-04T03:12:40+00:00",
"since_days": 7,
"has_new_collab": true,
"new_collabs": 1,
"upcoming_collabs": 1,
"latest_collab_published": "2026-10-01",
"total_collab_videos": 5,
"total_partners": 3,
"growth": {
"subs_7d": 6100,
"views_7d": 940000,
"subs_30d": 9800,
"views_30d": 1620000,
"growth_through": "2026-10-03"
},
"partners": [
{
"channel_id": "UC7lmZqZ9Q8-0yBZ5f4bOcKw",
"name": "Oven Hour",
"handle": "@ovenhour",
"avatar_url": "https://yt3.ggpht.com/...",
"url": "https://www.youtube.com/@ovenhour",
"subscriber_count": 212000,
"videos_together": 3,
"last_together": "2026-10-01"
}
],
"videos": [
{
"video_id": "k3VxQ9pLm2A",
"url": "https://www.youtube.com/watch?v=k3VxQ9pLm2A",
"title": "We Baked 100 Year Old Bread Recipes",
"view_count": 412000,
"published_at": "2026-10-01",
"upcoming": false,
"duration": "24:18",
"host": {
"channel_id": "UC7lmZqZ9Q8-0yBZ5f4bOcKw",
"name": "Oven Hour",
"handle": "@ovenhour",
"avatar_url": "https://yt3.ggpht.com/...",
"url": "https://www.youtube.com/@ovenhour",
"subscriber_count": 212000
},
"collaborators": [
{
"channel_id": "UC7lmZqZ9Q8-0yBZ5f4bOcKw",
"name": "Oven Hour",
"handle": "@ovenhour",
"avatar_url": "https://yt3.ggpht.com/...",
"url": "https://www.youtube.com/@ovenhour",
"subscriber_count": 212000
},
{
"channel_id": "UCq3Ci-h945sbEYXpVlw7rJg",
"name": "Rachel Bakes",
"handle": "@rachelbakes",
"avatar_url": "https://yt3.ggpht.com/...",
"url": "https://www.youtube.com/@rachelbakes",
"subscriber_count": 18400
}
]
}
]
}curl "https://api.algrow.online/api/collabs/channels/UCq3Ci-h945sbEYXpVlw7rJg?since_days=14" \ -H "Authorization: Bearer YOUR_API_KEY"
GET/api/collabs/recent
The newest collab videos across every channel the sweep has checked, published in the last days days, newest first or most viewed first. Each video lists its host (the channel it was uploaded to) and every collaborator. Pass channel_ids to watch a set of channels for new collabs. Collabs show up here as soon as the sweep finds them.
Query Parameters
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
| days | integer | Optional | 7 | How far back to look, in days. Max 90. |
| sort | string | Optional | newest | newest or views. |
| channel_ids | string | Optional | all | Comma-separated channel IDs, up to 50. Only collabs involving any of these channels. |
| page | integer | Optional | 1 | Page number, up to 50. |
| per_page | integer | Optional | 25 | Results per page, max 100. |
400 Bad sort or channel_ids
{
"success": true,
"days": 7,
"sort": "newest",
"page": 1,
"per_page": 25,
"count": 25,
"has_more": true,
"videos": [
{
"video_id": "k3VxQ9pLm2A",
"url": "https://www.youtube.com/watch?v=k3VxQ9pLm2A",
"title": "We Baked 100 Year Old Bread Recipes",
"view_count": 412000,
"published_at": "2026-10-01",
"upcoming": false,
"duration": "24:18",
"host": {
"channel_id": "UC7lmZqZ9Q8-0yBZ5f4bOcKw",
"name": "Oven Hour",
"handle": "@ovenhour",
"avatar_url": "https://yt3.ggpht.com/...",
"url": "https://www.youtube.com/@ovenhour",
"subscriber_count": 212000
},
"collaborators": [
{
"channel_id": "UC7lmZqZ9Q8-0yBZ5f4bOcKw",
"name": "Oven Hour",
"handle": "@ovenhour",
"avatar_url": "https://yt3.ggpht.com/...",
"url": "https://www.youtube.com/@ovenhour",
"subscriber_count": 212000
},
{
"channel_id": "UCq3Ci-h945sbEYXpVlw7rJg",
"name": "Rachel Bakes",
"handle": "@rachelbakes",
"avatar_url": "https://yt3.ggpht.com/...",
"url": "https://www.youtube.com/@rachelbakes",
"subscriber_count": 18400
}
]
}
]
}curl "https://api.algrow.online/api/collabs/recent?days=3&sort=views" \ -H "Authorization: Bearer YOUR_API_KEY"