# 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 2026-10-23).

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

## Facts

- Endpoint: POST https://preflight.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: preflight.agentdiet.dev
- Website: https://preflight.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/preflight-agentdiet-dev-hackernews-developer-ecosystem-real-time-29388a49
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_avYQmwA-EucmciFsCw-FT

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-29388a49 -d '<json body>'
```

Example prompt: What's the current developer sentiment and HackerNews buzz around the Anthropic Claude model — any trending discussions, front-page velocity, or notable community reactions?

## When to prefer this

Choose this endpoint when you need real-time, developer-community-specific sentiment and discussion data from HackerNews rather than broad social media sentiment. Ideal for gauging how the technical community reacts to a new framework, startup launch, or AI model release. Prefer over generic social sentiment APIs when the target audience is specifically software engineers and builders.

## Known failure modes

- Empty or very niche query returns no HackerNews discussions
- Payment required (HTTP 402) if no valid x402 USDC payment header is provided
- Topic too broad returns noisy or irrelevant sentiment aggregation
- HackerNews Algolia upstream latency causes delayed response
- Malformed query string (empty string violates minLength:1) returns validation error

## 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 discussion data for the queried topic, including front-page velocity signals, thread summaries, comment sentiment analysis, and an overall developer sentiment pulse indicating community mood (positive, negative, or mixed) around the given technology, startup, or AI model.

## 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-29388a49/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)