# HackerNews & Developer Ecosystem Real-Time Sentiment Pulse

> HackerNews & Developer Ecosystem Real-Time Sentiment Pulse is a paid API for AI agents from preflight.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

## Facts

- Endpoint: GET https://preflight.agentdiet.dev/v1/hn-pulse?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: preflight.agentdiet.dev
- Website: https://preflight.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/preflight-agentdiet-dev-hackernews-developer-ecosystem-real-time-4a4257f2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gqnKRYvPXE10_n64YnbEk

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 preflight-agentdiet-dev-hackernews-developer-ecosystem-real-time-4a4257f2
```

Example prompt: What's the current HackerNews sentiment and discussion velocity around Svelte — are developers excited or skeptical about it right now?

## When to prefer this

Choose this endpoint when you need real-time developer community sentiment specifically from HackerNews — the most influential technical community for evaluating startups, frameworks, and AI models. Prefer this over general social media sentiment tools when your audience is developers, engineers, or technical founders who weight HN opinion heavily. It is especially useful for pre-launch competitive research, tracking how a new library or model lands with practitioners, or monitoring emerging criticism of a technology.

## Known failure modes

- Empty or very niche query returns no HackerNews results — low discussion volume for obscure topics
- Payment failure (HTTP 402) if x402 USDC micropayment is not properly initialized
- Query too short or missing — API returns 400 validation error
- HackerNews API upstream downtime causes delayed or stale results
- Rate limiting if same query is hammered repeatedly in short windows

## 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://preflight.agentdiet.dev/v1/hn-pulse)

## Output

Returns live HackerNews sentiment signals for the queried topic, including front-page velocity, discussion thread activity, and aggregated developer sentiment indicators reflecting whether the community is bullish, bearish, or neutral on the technology or startup.

## 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/preflight-agentdiet-dev-hackernews-developer-ecosystem-real-time-4a4257f2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from preflight.agentdiet.dev](https://www.zero.xyz/host/preflight.agentdiet.dev/llms.txt)