---
title: "YouTube Hashtag Search API"
method: GET
path: "/v1/youtube/hashtag-search"
tags: ["YouTube"]
---

# YouTube Hashtag Search API

`GET /v1/youtube/hashtag-search`

## Request

- Base URL: `https://api.captapi.com`
- URL: `https://api.captapi.com/v1/youtube/hashtag-search`
- Auth: one of:
  - HTTP bearer
  - API key in header `X-API-Key`

Videos from youtube.com/hashtag/{name} — nested channel{}, viewCountIsApproximate.

Pass a hashtag (with or without #) and get the videos listed on YouTube's hashtag page as clean JSON. This is the /hashtag/{name} feed — not a search?q= keyword query. A query with spaces (travel blog) is 400 HASHTAG_HAS_SPACES — YouTube hashtag pages are one token; nothing is fetched. Use /v1/youtube/search for a keyword phrase. Titles often omit the #tag (it may live only in the description); association is the hashtag page itself. Envelope field is hashtag (the normalized tag). Each result includes type (video|short|live), id, url, title, nested channel{id,title,handle?,url}, viewCount + viewCountIsApproximate, and durationSeconds when YouTube exposes them. Returns a single window; use limit to size it. No cursor. Billed per returned result (~1 credit each).

Docs: https://captapi.com/apis/youtube-hashtag-search

## Query parameters

- `q` string, required
- `limit` integer
- `cache` boolean

## Response `200`

Success. The data object for this endpoint.

- object
  - `success` unknown, required
  - `data` object, required
    - `hashtag` string: Hashtag. Example: "music".
    - `totalReturned` integer: Number of items returned in this response.
    - `results` object[]
      - `type` string: Content type of the item.
      - `id` string: Id of this results item.
      - `url` string: Canonical URL of the item.
      - `title` string: Title of this results item.
      - `publishedTimeApprox` string: Approximate ISO-8601 derived from publishedTimeText, truncated to the label's precision (day/hour/minute). Not an observed instant — see publishedTimeIsApproximate.
      - `publishedTimeIsApproximate` boolean: true when publishedTimeApprox was derived from a relative label rather than an absolute timestamp YouTube exposed.
      - `publishedTimeText` string: Original relative publish label from the platform when an exact timestamp was not available (e.g. "1 year ago").
      - `viewCount` integer: View count.
      - `viewCountText` string: Compact view label as YouTube shows it (e.g. 750K).
      - `viewCountIsApproximate` boolean: True when viewCount was parsed from a compact UI label (e.g. 2.5B / 894M) rather than an exact integer.
      - `durationSeconds` integer: Length in seconds for this item (full media length, or a segment span when the endpoint documents a start/end).
      - `thumbnailUrl` string: Thumbnail image URL.
      - `channel` object: Channel name or channel object — shape depends on the endpoint (see that page's field notes).
        - `id` string: Id of this results item.
        - `title` string: Title of this results item.
        - `url` string: Canonical URL of the item.
        - `thumbnail` string
      - `badges` string[], nullable: Platform badges on the result (SoundCloud pro/verified; YouTube 4K/LIVE/New; etc.).

## Other responses

- `400`: Bad request: wrong platform URL, unknown endpoint, or an invalid parameter value. Not billed.
- `401`: Missing, invalid or revoked API key. Not billed.
- `402`: Not enough credits for this request. Not billed.
- `404`: The resource does not exist or is not public. Not billed.
- `422`: A required parameter is missing or has the wrong type. Not billed.
- `429`: Rate limit reached. Wait for Retry-After seconds. Not billed.
- `502`: The platform could not be reached or returned nothing usable. Retryable, not billed. 503 and 504 use the same envelope.

---

[API](https://skmtc.dev/captapi/apis/captapi-api.md) · [All operations](https://skmtc.dev/captapi/apis/captapi-api/llms.txt) · [OpenAPI document](https://skmtc.dev/captapi/apis/captapi-api/revisions/c9b9ac5ff1bd?raw)