# 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 2026-10-21).

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

## Facts

- Endpoint: GET https://whale-momentum.agentdiet.dev/v1/dev-sentiment?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- 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-f280935a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YyomwVGZa54n6-tnKEWdd

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-f280935a
```

Example prompt: What's the current developer sentiment around LangChain on HackerNews — is the community excited about it, or are there a lot of complaints and criticism?

## When to prefer this

Use this endpoint when you need real-time, developer-community-sourced sentiment on a specific technology, framework, startup, or AI model from HackerNews discussions — particularly when you need front-page velocity signals rather than social media or general web sentiment. Prefer this over generic sentiment APIs when the target audience is specifically software developers and technical founders.

## Known failure modes

- Empty or overly generic query returns low-signal or ambiguous results
- Very niche or newly coined terms may have insufficient HackerNews coverage
- Rate limiting or payment failure (HTTP 402) if USDC micropayment not processed
- Service unavailability returns an error with no partial data
- Ambiguous keyword (e.g. 'Apple') may conflate multiple topics without disambiguation

## 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/dev-sentiment)

## Output

Returns aggregated developer sentiment data derived from live HackerNews discussions, including sentiment polarity, front-page velocity metrics, and a summary of what developers are saying about the queried 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/whale-momentum-agentdiet-dev-hackernews-developer-ecosystem-real-time-f280935a/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)