# Hacker News Discussion Search: Product Discovery & User Research

> Hacker News Discussion Search: Product Discovery & User Research 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 relevant to product discovery and user research, returning titles, links, scores, authors, and timestamps.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/demand-next-community-product-discovery-product?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-product-discovery-user-research-d6b2717f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ALOxQlT3mR4fT5hVlgxNZ

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-product-discovery-user-research-d6b2717f -d '<json body>'
```

Example prompt: Search Hacker News for the top 5 discussions about user research methods and product discovery — I want to see what the community is saying, with links and scores.

## When to prefer this

Choose this endpoint when you need community-sourced, practitioner-level discussions specifically from Hacker News about product discovery and user research topics — especially useful when you want real developer and founder perspectives with social proof signals like upvote scores.

## Known failure modes

- No results found for a very niche or misspelled query
- max_results out of allowed range (1–10) causes validation error
- Hacker News upstream API unavailability returns an error or empty response
- Overly broad queries return low-relevance stories

## How this service works

Hacker News discussion search: product discovery and user research: Search public Hacker News stories for product discovery and user research. Returns story titles, links, scores, authors, and timestamps.

## Output

Returns a list of up to 10 Hacker News stories matching the query, each including the story title, link, upvote score, author username, and publication timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "default": "product discovery and user research Product teams",
   "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-product-discovery-user-research-d6b2717f/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)