Channel Data

Look up rich metadata for any YouTube channel by ID. All endpoints take a 24-char channel ID (UCxxxxxxxxxxxxxxxxxxxxxx). If you only have a @handle or URL, resolve it first via one of the search endpoints or the resolve endpoint.

GET /api/channels/:channel_id/about

Everything from a channel's About page in one call — name, description, subscriber and view counts, country, language, join date, topics, social links, trailer, banner, and more.

Path Parameters

Name	Type	Description
channel_id	string	24-char YouTube channel ID (starts with `UC`).

Example Response

{
                  "success": true,
                  "channel": {
                    "channel_id": "UCXoyny_UIW-02UwiNPUZT-w",
                    "title": "The Geo Network",
                    "handle": "@TheGeoNetwork",
                    "description": "...",
                    "url": "https://www.youtube.com/channel/UCXoyny_UIW-02UwiNPUZT-w",
                    "country": { "code": "TR", "name": "Türkiye" },
                    "default_language": "en",
                    "avatar_url": "...",
                    "banner_url": "...",
                    "subscriber_count": { "raw": 125000, "display": "125K" },
                    "view_count": { "raw": 27325762, "display": "27.3M" },
                    "video_count": { "raw": 95, "display": "95" },
                    "avg_views_per_video": { "raw": 287639, "display": "287.6K" },
                    "joined": {
                      "iso": "2019-10-12T00:00:00+00:00",
                      "formatted": "Oct 12, 2019",
                      "relative": "6 years ago",
                      "age_days": 2378
                    },
                    "privacy_status": "public",
                    "made_for_kids": false,
                    "hidden_subscribers": false,
                    "keywords": "...",
                    "topic_categories": ["Military", "Politics"],
                    "trailer_video_id": "abc123",
                    "uploads_playlist_id": "UUXoyny_UIW-02UwiNPUZT-w",
                    "tabs": ["Home", "Videos", "Shorts", "Playlists", "Posts"],
                    "has_contact_email": true,
                    "social_links": [
                      { "platform": "instagram", "url": "instagram.com/thegeonetwork_tgn" }
                    ],
                    "available_countries_count": 245
                  }
                }

Example Request

curl -H "Authorization: Bearer algrow_..." \ "https://algrow.online/api/channels/UCXoyny_UIW-02UwiNPUZT-w/about"

200 Success 400 Invalid channel_id 404 Channel not found 429 Rate limit

GET /api/formats/:slug/overview

Aggregate stats for one of Algrow's 24 canonical channel formats — how many channels are tracked in the niche, average and median subscriber counts, and the biggest channels. The channel About endpoint returns each channel's format slug; feed it here.

Path Parameters

Name	Type	Description
slug	string	One of the 24 canonical format slugs (e.g. `documentary`, `kids_content`, `challenge_videos`).

Example Response

{
                  "success": true,
                  "format": { "slug": "challenge_videos", "display_name": "Challenge Videos" },
                  "channels_tracked": 18265,
                  "avg_subscribers": 70840,
                  "median_subscribers": 7060,
                  "top_channels": [
                    {
                      "channel_id": "UCX6OQ3DkcsbYNE6H8uQQuVA",
                      "name": "MrBeast",
                      "subscribers": 511000000,
                      "profile_picture": "...",
                      "url": "https://www.youtube.com/channel/UCX6OQ3DkcsbYNE6H8uQQuVA"
                    }
                  ]
                }

Example Request

curl -H "Authorization: Bearer algrow_..." \ "https://algrow.online/api/formats/challenge_videos/overview"

200 Success 404 Unknown format slug 429 Rate limit

GET /api/channels/:channel_id/daily-analytics

See how a channel has grown day-by-day across any date range you pick — subscribers, views, and uploads, plus a summary with total growth over the window.

Query Parameters

Name	Type	Required	Default	Description
start_date	string	Optional	30 days ago	ISO `YYYY-MM-DD`.
end_date	string	Optional	today	ISO `YYYY-MM-DD`. Max window 365 days (clamped).

Example Response

{
                  "success": true,
                  "channel_id": "UCXoyny_UIW-02UwiNPUZT-w",
                  "channel_title": "The Geo Network",
                  "channel_type": "longform",
                  "start_date": "2026-03-16",
                  "end_date": "2026-04-15",
                  "days_requested": 31,
                  "days_with_data": 30,
                  "summary": {
                    "sub_growth": 12500,
                    "view_growth": 8450000,
                    "video_growth": 12,
                    "starting_subs": 125000,
                    "ending_subs": 137500,
                    "starting_views": 27000000,
                    "ending_views": 35450000
                  },
                  "days": [
                    {
                      "date": "2026-03-16",
                      "total_subs": 125000,
                      "total_views": 27000000,
                      "total_videos": 95,
                      "sub_increase_24h": 420,
                      "view_increase_24h": 215000,
                      "video_increase_24h": 0
                    }
                  ]
                }

Example Request

curl -G "https://algrow.online/api/channels/UCXoyny_UIW-02UwiNPUZT-w/daily-analytics" \ -H "Authorization: Bearer algrow_..." \ -d "start_date=2026-03-01&end_date=2026-04-15"

200 Success 400 Invalid date 404 No data in range

GET /api/channels/:channel_id/videos

Browse a channel's longform uploads, newest first — with titles, view counts, durations, upload dates, and thumbnails.

Query Parameters

Name	Type	Required	Default	Description
limit	integer	Optional	30	Max videos (1–100).

Example Response

{
                  "success": true,
                  "channel_id": "UCXoyny_UIW-02UwiNPUZT-w",
                  "limit": 30,
                  "count": 30,
                  "has_more": true,
                  "videos": [
                    {
                      "video_id": "R-NK5pa7KAU",
                      "title": "The Collapse Has Begun...",
                      "url": "https://www.youtube.com/watch?v=R-NK5pa7KAU",
                      "published_text": "5 hours ago",
                      "duration_text": "18:31",
                      "duration_seconds": 1111,
                      "view_count": 106657,
                      "view_count_text": "106,657 views",
                      "thumbnail_url": "..."
                    }
                  ]
                }

Example Request

curl -G "https://algrow.online/api/channels/UCXoyny_UIW-02UwiNPUZT-w/videos" \ -H "Authorization: Bearer algrow_..." -d "limit=50"

200 Success 400 Invalid channel_id

GET /api/channels/:channel_id/shorts

Browse a channel's Shorts, newest first — the real Shorts tab, not short-duration regular videos.

Query Parameters

Name	Type	Required	Default	Description
limit	integer	Optional	30	Max shorts (1–100).

Example Response

{
                  "success": true,
                  "channel_id": "UCXoyny_UIW-02UwiNPUZT-w",
                  "limit": 30,
                  "count": 3,
                  "has_more": false,
                  "shorts": [
                    {
                      "video_id": "5YKwSHccYTA",
                      "title": "Detaylı tarif...",
                      "url": "https://www.youtube.com/shorts/5YKwSHccYTA",
                      "view_count": 942,
                      "view_count_text": "942 views",
                      "thumbnail_url": "..."
                    }
                  ]
                }

Example Request

curl -H "Authorization: Bearer algrow_..." \ "https://algrow.online/api/channels/UCXoyny_UIW-02UwiNPUZT-w/shorts?limit=20"

200 Success 400 Invalid channel_id

GET /api/channels/:channel_id/playlists

See every public playlist on a channel — title, description, video count, and thumbnail for each. Paginates in batches of 50.

Query Parameters

Name	Type	Required	Default	Description
page_token	string	Optional	—	Pass the `next_page_token` from a previous response for subsequent pages.

Example Response

{
                  "success": true,
                  "channel_id": "UCXoyny_UIW-02UwiNPUZT-w",
                  "count": 17,
                  "next_page_token": null,
                  "playlists": [
                    {
                      "playlist_id": "PL069L7PbBcLx_O3Zv3gzUbScKtRrcMR76",
                      "title": "pide tarifleri",
                      "description": "",
                      "published_at": "2020-08-31T19:26:11Z",
                      "video_count": 4,
                      "thumbnail_url": "...",
                      "url": "https://www.youtube.com/playlist?list=PL069L7PbBcLx_O3Zv3gzUbScKtRrcMR76"
                    }
                  ]
                }

Example Request

curl -H "Authorization: Bearer algrow_..." \ "https://algrow.online/api/channels/UCXoyny_UIW-02UwiNPUZT-w/playlists"

200 Success 400 Invalid channel_id 429 Rate limit

POST /api/channels/bulk-stats

Subscriber counts — and channel-average views where we hold them — for many channels in one call. Channels already in the Algrow index are answered from our database and cost you nothing; anything we don't hold is resolved live from YouTube in batches. Use this instead of looping a per-channel endpoint when you are annotating a feed.

Request Body (JSON)

Name	Type	Required	Default	Description
channel_ids	string[]	Required	—	Channel IDs to look up. Must start with `UC` and be 24 characters. Duplicates and malformed entries are dropped silently; at most 300 per call.

Partial results are normal. Compare resolved against requested — a channel we can't resolve is simply absent from stats rather than present with zeroes. Each entry carries a source of algrow (from our index) or youtube (resolved live). avg_views_per_video is null for channels we haven't measured.

Example Response

{
                  "success": true,
                  "requested": 3,
                  "resolved": 2,
                  "stats": {
                    "UCXoyny_UIW-02UwiNPUZT-w": {
                      "subscriber_count": 1240000,
                      "avg_views_per_video": 84210.5,
                      "source": "algrow"
                    },
                    "UC_x5XG1OV2P6uZZ5FSM9Ttw": {
                      "subscriber_count": 2310000,
                      "avg_views_per_video": null,
                      "source": "youtube"
                    }
                  }
                }

Example Request

curl -X POST "https://algrow.online/api/channels/bulk-stats" \ -H "Authorization: Bearer algrow_..." \ -H "Content-Type: application/json" \ -d '{"channel_ids": ["UCXoyny_UIW-02UwiNPUZT-w", "UC_x5XG1OV2P6uZZ5FSM9Ttw"]}'

200 Success 400 Empty, invalid, or over 300 IDs 429 Rate limit

GET /api/channels/:channel_id/video-deltas

Daily view counts and day-over-day movement for each of a channel's tracked videos. Use it to see which videos are still picking up views and which have gone flat.

Query Parameters

Name	Type	Required	Default	Description
days	integer	Optional	30	How far back to read, from 1 to 365 days.

Coverage is not universal. Daily tracking runs for channels our users have opened, so a channel nobody has looked at yet returns videos: []. That is an empty series, not an error — render it as "not tracked yet" rather than treating it as a failure.

viewIncrease24h can be null. Null means there is no earlier day to measure against, so the movement is unknown. It never means zero. likes and comments follow the same rule.

Example Response

{
                  "channelId": "UCXoyny_UIW-02UwiNPUZT-w",
                  "days": 30,
                  "videos": [
                    {
                      "videoId": "dQw4w9WgXcQ",
                      "samples": [
                        {
                          "date": "2026-08-18",
                          "views": 412880,
                          "viewIncrease24h": null,
                          "likes": 18204,
                          "comments": 1332
                        },
                        {
                          "date": "2026-08-19",
                          "views": 431905,
                          "viewIncrease24h": 19025,
                          "likes": 18911,
                          "comments": 1388
                        }
                      ]
                    }
                  ]
                }

Example Request

curl -H "Authorization: Bearer algrow_..." \ "https://algrow.online/api/channels/UCXoyny_UIW-02UwiNPUZT-w/video-deltas?days=14"

200 Success 400 Invalid channel id or days out of range 429 Rate limit

POST /api/channels/:channel_id/videos/performance-trends

The channel's typical view curve by video age — a low and high band for how many cumulative views a video on this channel usually has at a given number of minutes after publication. Plot a video's real curve against this band to see whether it is over- or under-performing for its own channel.

Request Body (JSON)

Name	Type	Required	Default	Description
videoIds	string[]	Optional	—	Restrict the band to these videos. Omit to use the whole channel. Every entry must be a valid video id or the call returns 400.

Read the estimated flag before you trust the band. When we hold enough sampled history it is false and the band is a real 25th-to-75th percentile of that channel's own videos. When we don't, it is true and the band is synthesized from what we do know — still useful for shape, but not a measurement. A channel with no usable videos returns trends: [].

Example Response

{
                  "channelId": "UCXoyny_UIW-02UwiNPUZT-w",
                  "estimated": false,
                  "trends": [
                    {"minutesSincePublication": 60, "min": 1420, "max": 8830},
                    {"minutesSincePublication": 1440, "min": 24100, "max": 96400}
                  ]
                }

Example Request

curl -X POST "https://algrow.online/api/channels/UCXoyny_UIW-02UwiNPUZT-w/videos/performance-trends" \ -H "Authorization: Bearer algrow_..." \ -H "Content-Type: application/json" \ -d '{}'

200 Success 400 Invalid channel id or videoIds 429 Rate limit

GET /api/videos/:video_id/stats-history

The sampled time series for one video: views, likes and comments at each point we recorded, plus the views-per-hour rate between consecutive points. Returns the last sample in each bucket, oldest first.

Query Parameters

Name	Type	Required	Default	Description
granularity	string	Optional	hourly	Bucket size. One of `hourly`, `daily`, `monthly`.
from	string	Optional	—	Start of the window. Omit for the earliest sample we hold.
to	string	Optional	—	End of the window. Omit for the most recent sample.

History is sampled, not continuous. A video only has points from the moment we started seeing it, so samples is empty for videos we have never recorded. vph is computed between the returned points, which means a wider granularity gives a smoother, lower-resolution rate.

Example Response

{
                  "videoId": "dQw4w9WgXcQ",
                  "granularity": "hourly",
                  "samples": [
                    {
                      "timestamp": "2026-08-19T14:00:00Z",
                      "views": 412880,
                      "likes": 18204,
                      "comments": 1332,
                      "vph": null
                    },
                    {
                      "timestamp": "2026-08-19T15:00:00Z",
                      "views": 414012,
                      "likes": 18251,
                      "comments": 1339,
                      "vph": 1132
                    }
                  ]
                }

Example Request

curl -H "Authorization: Bearer algrow_..." \ "https://algrow.online/api/videos/dQw4w9WgXcQ/stats-history?granularity=daily"

200 Success 400 Invalid video id or granularity 429 Rate limit

POST /api/videos/:video_id/observations

Record one point-in-time reading of a video's stats. This is the write side of stats-history — every observation you post becomes a point in that video's series.

Request Body (JSON)

Name	Type	Required	Default	Description
viewCount	integer	Required	—	The video's view count at the moment you read it. Must be a whole number.
likeCount	integer	Optional	—	Like count. Negative or non-integer values are stored as null rather than rejected.
commentCount	integer	Optional	—	Comment count. Same handling as `likeCount`.

At most one sample per video per 10 minutes. Posting more often is safe but the extra readings are discarded. recorded tells you which happened: true means a new point was stored, false means one already existed inside the window. Neither is an error.

Example Response

{
                  "videoId": "dQw4w9WgXcQ",
                  "recorded": true
                }

Example Request

curl -X POST "https://algrow.online/api/videos/dQw4w9WgXcQ/observations" \ -H "Authorization: Bearer algrow_..." \ -H "Content-Type: application/json" \ -d '{"viewCount": 414012, "likeCount": 18251, "commentCount": 1339}'

200 Success 400 Invalid video id or missing viewCount 429 Rate limit

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