Ebay Search

eBay Search

Search eBay product listings through Frevana.

Purpose

This skill is for finding eBay product listing results.

Inputs:

• query
• optional category_id
• optional ebay_domain
• optional page
• optional results_per_page

Output:

• validated response JSON with eBay listing results
• the same validated JSON saved to a local file on every successful run

This skill validates that the response is JSON, saves it to disk, and returns it unchanged on stdout. Do not rewrite or reshape the returned data unless the user explicitly asks for a transformation.

What This Skill Needs

• user-provided query or category_id
• optional ebay_domain
• optional page
• optional results_per_page
• FREVANA_TOKEN in the environment variables, or an explicit --token override for the current run
• curl
• bash
• python3

Execution Order

Use this flow so the request stays simple and reliable:

1. Confirm the user has provided query or category_id.
2. Prefer the script over ad hoc curl commands.
3. Let the script read FREVANA_TOKEN first.
4. In interactive shell usage, if FREVANA_TOKEN is missing, the script may prompt for it.
5. In non-interactive or agent workflows, fail fast if the token is missing and tell the user to set FREVANA_TOKEN or pass --token explicitly.
6. Run the script once. It prints the validated JSON to stdout and saves the same JSON to a file.
7. Use the saved JSON file for any follow-up parsing or summarization instead of calling the search API again.
8. Return the validated response JSON, or summarize the most relevant listings if the user does not need the full payload.

Commands

Basic eBay search

bash <skill-path>/scripts/search_ebay.sh \
  --query "vintage watch"

Search a category

bash <skill-path>/scripts/search_ebay.sh \
  --category-id 31387

Search with domain, page, and result count

bash <skill-path>/scripts/search_ebay.sh \
  --query "sony headphones" \
  --ebay-domain ebay.com \
  --page 2 \
  --results-per-page 100

Save response JSON to a specific file

bash <skill-path>/scripts/search_ebay.sh \
  --query "vintage watch" \
  --output ./out/ebay-search-result.json

Token override for the current run

bash <skill-path>/scripts/search_ebay.sh \
  --query "vintage watch" \
  --token "your bearer token"

Fixed Request Shape

The script sends this payload shape, omitting optional fields that were not provided:

{
  "query": "vintage watch",
  "category_id": "31387",
  "ebay_domain": "ebay.com",
  "page": 2,
  "results_per_page": 100
}

At least one of query or category_id is required. Do not invent category_id, ebay_domain, page, or results_per_page values when the user did not provide them.

The Frevana endpoint is already scoped to eBay Search, so do not pass unsupported passthrough fields such as engine, api_key, output, no_cache, async, or zero_trace.

Response Shape

The API returns Frevana JSON. Common result fields include organic_results, related_searches, categories, and pagination, depending on the eBay response.

Output

• Success: the script validates that the response body is JSON, writes it to a file, prints the saved path to stderr, and prints the JSON to stdout
• Default file path: ./out/ebay-search-<UTC timestamp>-<pid>.json
• With --output: the same JSON is written to the specified file path instead of the default path
• Failure: the script prints the response body or parsing error and exits non-zero

Notes

• Require --query or --category-id
• Do not call the script twice just to save and summarize results. It always saves the same JSON that it prints.
• Use --ebay-domain only when the user specifies an eBay domain such as ebay.com
• Use --page when the user requests pagination; the value must be an integer >= 1
• Use --results-per-page when the user requests a result count; the value must be an integer from 1 to 240
• If curl is missing, stop and tell the user to install curl
• If python3 is missing, stop and tell the user to install python3
• Do not echo the Bearer token back to the user
• Summarize listing title, product ID, price, condition, shipping, seller, and link when available unless the user asks for raw JSON

Example Prompts

中文

• "搜索 eBay 上的 vintage watch"
• "查一下 eBay 里 query=sony headphones，page=2，results_per_page=100"
• "用 category_id=31387 搜索 eBay，并保存原始 JSON"

English

• "Search eBay for vintage watch"
• "Look up eBay results for sony headphones on page 2 with 100 results per page"
• "Search eBay category_id 31387 and save the raw JSON"