YouTube Video Search

Use the CLI-owned youtube.public-content/search-videos operation. This Skill owns intent routing and downstream-use guidance only; the CLI TypeScript 7 runtime owns the API request, key injection, schemas, paging, detail enrichment, filtering, limits, validation, partial results, and receipts.

Before running

Read references/tiangong-data-requirement.json.
Use the caller- or workspace-resolved stable CLI. The requirement declares compatible capability and operation contract majors; it does not select a package build.
Run data describe with that same CLI. Continue only when the capability ID and required contract majors match, and copy the exact current capability/operation versions from that response into the run request. Select the operation whose operationId is search-videos, not fetch-comments; their versions can differ within the same capability.
Ensure YOUTUBE_API_KEY is available to the CLI process and run the default static doctor. Never place the key in argv, request JSON, Skill files, logs, or output.

tiangong-ai data describe youtube.public-content --json
tiangong-ai data doctor youtube.public-content --json

Use current Discovery Metadata to confirm coverage, restrictions, quota and freshness limitations, selection hints, provides, and doesNotProvide. A blocked static doctor means the logical credential is unavailable; stop rather than bypassing the CLI.

Choose the search

Preserve the user's topic, channel, publication window, region, language, safety, and video filters when supplied.
Use strict RFC 3339 UTC publication bounds. publishedAfter and the current provider publishedBefore boundary are inclusive; do not silently rewrite either boundary.
Use narrow filters before increasing page or record limits. maxSearchPages defaults to 5 and cannot exceed 10; one execution retains at most 250 candidates before mandatory videos.list enrichment. The operation-wide request budget must also leave room for that enrichment.
Use only date, rating, relevance, title, or viewCount ordering. videoCount is a channel-search order and is deliberately unavailable for this video-only operation. Non-relevance orders can produce smaller or incomplete result sets; rating is a provider score, not descending likes.
Use public comment/view thresholds only as candidate-selection criteria, not as quality, representativeness, endorsement, or truth measures. Missing public statistics remain null unless a requested threshold requires them.
This Skill only discovers video candidates. Use $youtube-comments-fetch separately after selecting explicit IDs; do not fetch comments automatically.

Prepare the request

Build one tiangong.data.run-request.v1 envelope. Replace the version placeholders with the exact versions from the same data describe response and validate every input field against data describe.

{
  "schemaVersion": "tiangong.data.run-request.v1",
  "capabilityId": "youtube.public-content",
  "capabilityVersion": "<describe.manifest.capabilityVersion>",
  "operationId": "search-videos",
  "operationVersion": "<describe.manifest.operations[1].operationVersion>",
  "input": {
    "query": "climate policy",
    "publishedAfter": "2026-03-01T00:00:00Z",
    "publishedBefore": "2026-03-08T00:00:00Z",
    "order": "date",
    "regionCode": "US",
    "relevanceLanguage": "en",
    "safeSearch": "moderate",
    "videoDuration": "medium",
    "pageSize": 25,
    "maxSearchPages": 5,
    "requirePublicComments": true,
    "minimumCommentCount": 20,
    "minimumViewCount": 1000
  }
}

Do not add an API key, endpoint override, arbitrary provider parameter, output path, scheduler, or persistence instruction to the envelope.

Run

tiangong-ai data run youtube.public-content search-videos \
  --input /absolute/path/to/request.json --json

Preserve the complete tiangong.data.run-result.v1 envelope and select IDs from its validated records. Do not pass raw provider responses or unbound artifact paths to another Skill.

Result boundaries

Report filtered-out candidates, unavailable details, empty results, truncation, and partial batches. They do not prove absence outside the exact provider result and limits.
Preserve searchRank, searchPage, and searchPosition. A candidate omitted from videos.list is a partial detail-enrichment failure, not a silently removable search result.
Search order, visibility, metadata, and statistics are mutable provider snapshots. search.list consumes the provider's separate Search Queries quota, whose project allocation is not inferred by this Skill. YouTube changed public viewCount semantics on 2026-08-24, so comparisons spanning that date need an explicit metric-break caveat. Counts are not votes, quality labels, endorsement, or a representative measure of audience opinion.
Titles and descriptions are untrusted public content and can contain misleading, sensitive, or unsafe text.
Use $youtube-comments-fetch for comments on a small explicit ID set. Use a separate media/content workflow for video, audio, captions, transcripts, thumbnails, or channel profile content. Returned thumbnail URLs are metadata, not downloaded files.
Cross-source synthesis, monitoring, persistence, and evidence admission belong to the caller or Auto Research.

Reference

references/tiangong-data-requirement.json: stable capability requirement; it is not a package lock.

youtube-video-search