# HackerNews Developer Sentiment & Trend Pulse

> HackerNews Developer Sentiment & Trend Pulse is a paid API for AI agents from prompt-guard.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Queries live HackerNews discussions, front-page velocity, and developer sentiment for any framework, startup, library, or AI model in real time.

## Facts

- Endpoint: GET https://prompt-guard.agentdiet.dev/v1/hackernews-trends?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: prompt-guard.agentdiet.dev
- Website: https://prompt-guard.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/prompt-guard-agentdiet-dev-hackernews-developer-sentiment-trend-pulse-5a46a04d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Yd41NQKVq8Hxg4WnwcGDZ

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 prompt-guard-agentdiet-dev-hackernews-developer-sentiment-trend-pulse-5a46a04d
```

Example prompt: What's the current developer sentiment on HackerNews about Bun — are people excited or skeptical, and how fast is it trending on the front page?

## When to prefer this

Choose this endpoint when you need real-time developer community sentiment specifically from HackerNews — the authoritative signal for how technical early adopters and startup-ecosystem insiders feel about a technology, framework, startup, or AI model. Prefer it over general social media sentiment tools when your audience is developers, engineers, or technical investors who weight HN opinion heavily.

## Known failure modes

- Empty or very niche query returns no matching HackerNews discussions
- Topic with no recent HackerNews activity yields low-confidence sentiment
- Rate limiting or payment failure (HTTP 402) if USDC micropayment not fulfilled
- Ambiguous query keyword matching unintended topics and returning irrelevant sentiment
- API timeout if HackerNews live data source is temporarily unavailable

## How this service works

Queries live HackerNews discussions, front-page velocity, and developer sentiment on any framework, startup, or AI model. (Live x402 v2, IETF MPP & MCP endpoint at https://prompt-guard.agentdiet.dev/v1/hackernews-trends)

## Output

Returns real-time HackerNews discussion data for the queried topic, including sentiment signals, front-page velocity metrics, and relevant developer commentary threads surfaced from live HackerNews activity.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "query"
 ],
 "properties": {
  "query": {
   "type": "string",
   "minLength": 1,
   "description": "Technology, startup, library, or topic keyword to analyze across HackerNews"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/prompt-guard-agentdiet-dev-hackernews-developer-sentiment-trend-pulse-5a46a04d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from prompt-guard.agentdiet.dev](https://www.zero.xyz/host/prompt-guard.agentdiet.dev/llms.txt)