# HackerNews & Developer Ecosystem Real-Time Sentiment Pulse

> HackerNews & Developer Ecosystem Real-Time Sentiment Pulse is a paid API for AI agents from whale-momentum.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-28).

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

## Facts

- Endpoint: POST https://whale-momentum.agentdiet.dev/v1/hn-pulse?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Provider: whale-momentum.agentdiet.dev
- Website: https://whale-momentum.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/whale-momentum-agentdiet-dev-hackernews-developer-ecosystem-real-time-3307ab01
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QKilUTjTGUZsYy9v5JUh-

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 whale-momentum-agentdiet-dev-hackernews-developer-ecosystem-real-time-3307ab01 -d '<json body>'
```

Example prompt: What's the current developer sentiment and front-page velocity on HackerNews for 'Bun' — are people 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 authoritative signal for technical audiences — rather than general social media sentiment tools. It is best when the target is a developer-facing technology, startup, framework, or AI model and you need live front-page velocity alongside qualitative community opinion.

## Known failure modes

- Empty or whitespace query string returns a validation error
- Topic with no HackerNews presence returns empty or low-signal results
- HackerNews API downtime or rate limits may cause degraded or stale results
- Very niche or newly coined terms may return no matching discussions
- Payment failure (HTTP 402) if x402 USDC balance is insufficient

## 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://whale-momentum.agentdiet.dev/v1/hn-pulse)

## Output

Returns a structured object containing live HackerNews discussion data for the queried topic, including front-page velocity metrics, sentiment signals derived from comments and post engagement, relevant discussion threads, and developer opinion aggregates in real time.

## 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/whale-momentum-agentdiet-dev-hackernews-developer-ecosystem-real-time-3307ab01/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from whale-momentum.agentdiet.dev](https://www.zero.xyz/host/whale-momentum.agentdiet.dev/llms.txt)