# Hacker News Discussion Search: Search, Retrieval, and RAG Systems

> Hacker News Discussion Search: Search, Retrieval, and RAG Systems is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Searches public Hacker News stories specifically about search, retrieval, and RAG (Retrieval-Augmented Generation) systems, returning titles, links, scores, authors, and timestamps.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/demand-next-community-search-and-retrieval-operators?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hacker-news-discussion-search-search-retrieval-and-rag-systems-2eedafcb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YjSqiRJ7TVct78Fe0sHqH

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability hacker-news-discussion-search-search-retrieval-and-rag-systems-2eedafcb -d '<json body>'
```

Example prompt: Search Hacker News for the top 5 discussions about RAG systems and vector retrieval — I want to see what the community is saying, with links and scores.

## When to prefer this

Choose this endpoint when you specifically need community discussion signals from Hacker News about search, retrieval, or RAG systems — particularly when you want scored, author-attributed stories with timestamps rather than generic web search results. Ideal for tracking tech community sentiment, discovering practitioner debates, or gathering references shared among developers in the search/AI space.

## Known failure modes

- No results found if query is too niche or no matching HN stories exist
- max_results out of range (must be 1–10) may return an error
- Network or provider downtime may cause request failure
- Overly broad queries may return loosely relevant results

## How this service works

Hacker News discussion search: search, retrieval, and RAG systems: Search public Hacker News stories for search, retrieval, and RAG systems. Returns story titles, links, scores, authors, and timestamps.

## Output

Returns a list of up to 10 Hacker News stories matching the query, each containing the story title, URL link, community score (upvotes), author username, and publication timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "default": "search, retrieval, and RAG systems Platform operators",
   "description": "Optional focused search query."
  },
  "max_results": {
   "type": "integer",
   "default": 5,
   "maximum": 10,
   "minimum": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hacker-news-discussion-search-search-retrieval-and-rag-systems-2eedafcb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)