# HackerNews & Developer Ecosystem Real-Time Sentiment Pulse

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

## Facts

- Endpoint: GET https://hn-pulse.agentdiet.dev/v1/hackernews-velocity-radar?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: hn-pulse.agentdiet.dev
- Website: https://hn-pulse.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/hn-pulse-agentdiet-dev-hackernews-developer-ecosystem-real-time-0d384464
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dVlOBUhNsInPN9_tjRLPC

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 hn-pulse-agentdiet-dev-hackernews-developer-ecosystem-real-time-0d384464
```

Example prompt: What's the real-time HackerNews sentiment and front-page velocity for 'Bun' right now — are developers excited or skeptical about it?

## When to prefer this

Choose this endpoint when you need real-time developer community sentiment specifically from HackerNews — particularly useful for tracking how technical audiences are reacting to a framework launch, startup announcement, or AI model release. Prefer this over general social media sentiment tools when your audience is developers and the signal source matters.

## Known failure modes

- Empty or irrelevant query string returns no results or low-quality matches
- Topic with very low HackerNews activity may return sparse or no data
- Payment failure via x402 results in HTTP 402 with no data returned
- Overly generic queries (e.g. 'software') may return noisy, unfocused results
- Rate limiting or API downtime may cause timeouts or 5xx errors

## 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://hn-pulse.agentdiet.dev/v1/hackernews-velocity-radar)

## Output

Returns live HackerNews discussion data including front-page velocity metrics, sentiment signals from active threads, and developer community reaction indicators for the queried keyword or topic.

## 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/hn-pulse-agentdiet-dev-hackernews-developer-ecosystem-real-time-0d384464/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from hn-pulse.agentdiet.dev](https://www.zero.xyz/host/hn-pulse.agentdiet.dev/llms.txt)