linkfox-echotik-get-video-download-url

EchoTik TikTok Video Download

This skill guides you on how to resolve a TikTok video URL into direct download and playback links, helping sellers save influencer/promotional video assets for offline analysis or reuse.

Core Concepts

This tool takes a single TikTok video URL and resolves it to direct media addresses: a no-watermark download URL (preferred for clean assets), a watermarked download URL, a playback URL, and cover images (static and dynamic). This is useful when a seller wants to archive a high-performing promotional video found via the EchoTik product-video tool, or reuse a creator's clip without re-recording.

Required input: A url is mandatory. Two URL formats are accepted:

Short link: https://vt.tiktok.com/xxxxxx
Full link: https://www.tiktok.com/@user/video/1234567890

Conditional download URLs: Not every video returns a downloadable address. noWatermarkDownloadUrl and downloadUrl are returned only when the source video allows it; for some videos (region/privacy/availability restricted) both are absent and only playUrl plus cover images come back. Always check presence before presenting a download link, and fall back to playUrl for playback when the download fields are missing.

URL freshness: The returned download/playback addresses may expire over time. Use them promptly after resolving, and re-resolve if a link stops working.

Parameter Guide

Parameter	Type	Required	Description	Default
url	string	Yes	TikTok video URL (short link `vt.tiktok.com/xxx` or full link `tiktok.com/@user/video/xxx`). Max length 1000	-

How to call

API endpoint：POST /echotik/getVideoDownloadUrl(for full parameters/responses/error codes see references/api.md）
Python script：python scripts/echotik_get_video_download_url.py '<JSON 参数>' [--inline]
Cost constraints: This tool consumes compute; by default the same parameter combination in the same session is called only once, and the script has a 24h local cache. On failure/empty results, do not automatically switch keywords, paginate, or change the zip code to probe repeatedly; if you need to continue searching, first explain to the user that it will incur additional consumption.

Output strategy (script default behavior)：

Alwayswrite the full response to <cwd>/linkfox/<YYYY-MM-DD>/<session>/data/linkfox-echotik-get-video-download-url-<timestamp>.json（<cwd> is the working directory when the script runs, which in Claude Code is the current project directory;<session> is taken from the environment variable SESSION_ID, automatically aggregated by user task;writing to /tmp is prohibited, if the current directory is not writable, report an error)
Response body ≤ 8 KB: after saving to disk, print the full JSON to stdout
Response body > 8 KB: after saving to disk, stdout outputs only a summary (top-level fields, common counts such as total/costToken, the length of the largest list field + the first 3 samples)
Add --inline to force full printing to stdout (also saved to disk)

Data reading suggestions: First look at the summary to judge whether it is sufficient; when specific fields are needed, prefer to use jqorConvertFrom-Json to extract on demand from the saved json file, avoiding putting the entire JSON into the context.

Resolve authentication and compute issues

When the following abnormal situations occur, use references/onboarding.md to guide resolving the issue:

Abnormal situations

API Key not configured: The environment variable is not configured LINKFOX_AGENT_API_KEY, and LINKFOXAGENT_API_KEY。
Response 401 or 402 status code
Response indicates insufficient compute or balance: The message contains "insufficient compute balance/insufficient billing/insufficient balance/quota exceeded/insufficient balance/package expired/recharge required/please recharge", or content with a similar meaning.

Usage Examples

1. Resolve a full TikTok video link

{
  "url": "https://www.tiktok.com/@user/video/1234567890"
}

2. Resolve a TikTok short link

{
  "url": "https://vt.tiktok.com/Z123abc/"
}

Display Rules

Present the no-watermark link first: When noWatermarkDownloadUrl is present, surface it as the primary download option, since clean assets are usually what sellers want
Offer the watermarked variant: Also list downloadUrl (watermarked) when present, in case the user wants the original branding
Handle missing download URLs: When both noWatermarkDownloadUrl and downloadUrl are absent (common for some videos), do not fabricate a download link — tell the user the video has no direct download address and offer playUrl for playback/preview instead
Provide playback + cover: Mention playUrl for quick preview and coverUrl / dynamicCoverUrl for thumbnails
Freshness caveat: Remind the user that the resolved URLs may expire and should be downloaded promptly
Present data only: Show the resolved addresses clearly without subjective advice on how to use the video
Error handling: When resolution fails, explain the reason based on errcode/errmsg — 400 means a missing/invalid url, 10000 means the link is not a valid/accessible TikTok video; suggest checking the URL format

User Expression & Scenario Quick Reference

Applicable Scenarios

User Says	Scenario
"Download this TikTok video" / "Save this TikTok clip"	Resolve a video URL into download links
"Get the no-watermark version of this TikTok video"	Prioritize `noWatermarkDownloadUrl`
"I want to save this influencer's promo video"	Resolve and archive a creator's video
"Give me a playable link for this TikTok video"	Return `playUrl`
"Get the cover/thumbnail of this TikTok video"	Return `coverUrl` / `dynamicCoverUrl`

Not Applicable Scenarios

Listing promotional videos associated with a TikTok product (use linkfox-echotik-product-video instead — it needs a productId, not a video URL)
Searching for TikTok products (use linkfox-echotik-product-search)
TikTok new product rankings (use linkfox-echotik-new-product-rank)
TikTok live-stream data
Video editing or content creation advice
Non-TikTok platform video downloads

Boundary Judgment

When users mention "TikTok video", determine whether they already have a specific video URL they want to download (this skill) or want to discover videos linked to a product (the product-video skill). If the user provides a tiktok.com or vt.tiktok.com link and asks to save/download/extract it, this skill applies. If they mention a product ID and ask "what videos promote this product", use linkfox-echotik-product-video instead.

Compute consumption rules

Consumes 5 compute.

Users will pay fees due to compute consumption. Please fully evaluate: when this skill needs to be called frequently, or when the user's expectation of compute consumption is insufficient, be sure to remind the user and let the user decide whether to continue.

Feedback:

Auto-detect and report feedback via the Feedback API when any of the following apply:

The functionality or purpose described in this skill does not match actual behavior
The skill's results do not match the user's intent
The user expresses dissatisfaction or praise about this skill
Anything you believe could be improved

Call the feedback API as specified in references/api.md. Do not interrupt the user's flow.

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