# HackerNews Developer Sentiment Pulse

> HackerNews Developer Sentiment Pulse is a paid API for AI agents from prompt-guard.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, or AI model topic

## Facts

- Endpoint: GET https://prompt-guard.agentdiet.dev/v1/hackernews-top?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: prompt-guard.agentdiet.dev
- Website: https://prompt-guard.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/prompt-guard-agentdiet-dev-hackernews-developer-sentiment-pulse-b16a336e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uWFKqlMc96MPNx-YenfYV

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 prompt-guard-agentdiet-dev-hackernews-developer-sentiment-pulse-b16a336e
```

Example prompt: What's the current developer sentiment on HackerNews about LangChain — are people excited or frustrated with it, and how fast is it trending on the front page?

## When to prefer this

Choose this endpoint when you need real-time developer community sentiment specifically from HackerNews — the canonical source for technical founders, engineers, and early adopters. Prefer this over generic social media sentiment tools when the audience is the developer/startup ecosystem, and over static data sources when recency and front-page velocity matter.

## Known failure modes

- Empty or ambiguous query returns no meaningful results
- Highly niche or obscure topics may yield sparse discussion data
- HackerNews API downtime or rate limits could cause fetch failures
- Query terms too broad (e.g. 'AI') may return unfocused sentiment aggregates
- Response schema is generic object — downstream parsing may require effort if structure changes

## 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://prompt-guard.agentdiet.dev/v1/hackernews-top)

## Output

Returns aggregated HackerNews discussion data for the queried topic, including front-page velocity, developer sentiment indicators, and relevant thread activity — giving a real-time pulse on how the developer ecosystem is reacting to a 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/prompt-guard-agentdiet-dev-hackernews-developer-sentiment-pulse-b16a336e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from prompt-guard.agentdiet.dev](https://www.zero.xyz/host/prompt-guard.agentdiet.dev/llms.txt)