git:20260902.68dc494 to git:20260908.ef1f05b

1 added, 1 removed. Audit A to A.

---

name: ecommerce-tiktok-video-rank

description: Query TikTok public video rankings from EchoTik through the NexScope research proxy. Use when the user requests this public marketplace or patent data; do not use for seller-console or store-authorized operations.

---

# ecommerce-tiktok-video-rank

Use this skill to query TikTok public video rankings from EchoTik. Read [references/api.md](references/api.md) before constructing a request.

## Request contract

- Endpoint: `POST /api/v1/tools/research/echotik/listVideoRank`

- Required: `date` (`YYYY-MM-DD`), `rankType` (1-3), `region`, `videoRankField` (1-2).

- Optional: `productCategoryId`, `createdByAi`, `pageNum`, `pageSize` (10-100 in multiples of 10).

- Send only documented fields; reject unknown fields before network access.

Minimal example:

```json

{"date":"2026-08-26","rankType":1,"region":"US","videoRankField":1,"pageNum":1,"pageSize":10}

```

## Workflow

1. Confirm the requested public entity, market, operation, filters, and expected cost.

2. Validate parameters against the API reference. Send only documented business fields.

3. Run `python scripts/echotik_list_video_rank.py '<JSON parameters>' --no-cache` once. Do not probe alternate products, markets, pages, or operations after a paid failure without user approval.

4. Preserve the full response file. Distinguish the NexScope transport envelope from the inner business response and report `traceId` on errors.

5. Summarize only returned facts. Preserve missing values as unknown and identify the requested market and operation.

## Cost

- Do not reuse the source Skill's point value. The actual NexScope charge is calculated after the response as `X-Cost-Token × 0.001041`. For example, `105000 × 0.001041 = 109.305` credits. Record `X-Cost-Credit` when present, but do not use it as the migrated Skill's billing basis. The exact charge is unknown before the first live response.

+ Do not reuse the source Skill's point value. This operation consumes NexScope credits. Preserve `X-Cost-Token` and `X-Cost-Credit` from the response headers as server-reported billing metadata. The exact charge is unknown before the first live response.

## Error and credit handling

- HTTP 401 means NexScope authentication failed. Verify `NEXSCOPE_API_KEY` and `NEXSCOPE_PROXY_BASE`; do not ask the user to paste credentials into chat or operation JSON.

- HTTP 402 means the account lacks credits. Stop the workflow and direct the user to the access-help page below.

- Marketplace authorization failures require the platform-specific account or token to be renewed. Do not substitute a different store, region, or creator automatically.

- For ambiguous network failures, report whether the attempted operation was a read or mutation. Never repeat a mutation without reconciling its upstream state.

## Authentication

Set the `NEXSCOPE_API_KEY` environment variable. If credentials are missing or expire, visit [https://www.nexscope.ai/help/skills-external-access?co-from=skillNS](https://www.nexscope.ai/help/skills-external-access?co-from=skillNS) to top up credits.

## Presenting results

- Lead with the requested entity, market, operation, and the most decision-relevant returned fields.

- Preserve source currencies, units, identifiers, dates, and missing values; do not invent conversions or defaults.

- Keep the full JSON artifact and present compact tables for repeated records when useful.

- Report the `X-Cost-Token`, calculated NexScope credits, and trace ID from the saved billing metadata.

## Boundaries and privacy

- This migration is public-data and read-only. Do not invoke seller-console, store-authorized, favorite-write, or account mutation operations.

- One explicit request per call. Do not silently change entity, market, date, operation, or page after an error.

- Redact credentials, signed URLs, cookies, and internal account identifiers from user-facing output and saved request examples.

- Do not claim live, ZIP-install, or production validation unless the matching evidence exists in `references/testing.md`.

## References

- Read [references/api.md](references/api.md) for the complete parameter, response, and error contract.

- Read [references/testing.md](references/testing.md) before executing a live request or claiming a validation level.