# HackerNews & Developer Ecosystem Real-Time Sentiment Pulse

> HackerNews & Developer Ecosystem Real-Time Sentiment Pulse is a paid API for AI agents from alpha-stream.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-23).

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

## Facts

- Endpoint: POST https://alpha-stream.agentdiet.dev/v1/hn-pulse?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: alpha-stream.agentdiet.dev
- Website: https://alpha-stream.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/alpha-stream-agentdiet-dev-hackernews-developer-ecosystem-real-time-cc95f59e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EkFBHF0ecSr309X7PrfdX

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 alpha-stream-agentdiet-dev-hackernews-developer-ecosystem-real-time-cc95f59e -d '<json body>'
```

Example prompt: What's the current developer sentiment and discussion velocity around LangChain on HackerNews right now — are developers excited, skeptical, or mixed?

## When to prefer this

Use this endpoint when you need real-time, developer-community-specific sentiment from HackerNews rather than broad social media or generic news sentiment. It is best suited for tech-centric topics — frameworks, libraries, AI models, developer tools, and startups — where HackerNews is the primary signal source. Prefer it over general web search sentiment tools when the audience is specifically software developers and the recency of discussions matters.

## Known failure modes

- Empty or very niche query may return no HackerNews discussions and minimal signal
- Rate limits or x402 payment failures result in HTTP 402 requiring USDC micropayment
- Ambiguous query terms (e.g. single-letter names) may return irrelevant discussion threads
- HackerNews Algolia API downtime may cause upstream data gaps
- Very new topics may have no indexed discussions yet

## 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://alpha-stream.agentdiet.dev/v1/hn-pulse)

## Output

Returns an object containing aggregated HackerNews sentiment signals for the queried topic, including discussion velocity (front-page appearance rate), sentiment polarity (positive/negative/mixed developer opinion), recent thread summaries, and related discussion metadata drawn from live HackerNews data.

## 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/alpha-stream-agentdiet-dev-hackernews-developer-ecosystem-real-time-cc95f59e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from alpha-stream.agentdiet.dev](https://www.zero.xyz/host/alpha-stream.agentdiet.dev/llms.txt)