# HackerNews & Developer Ecosystem Real-Time Sentiment Pulse

> HackerNews & Developer Ecosystem Real-Time 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 on any framework, startup, or AI model.

## Facts

- Endpoint: GET https://prompt-guard.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: prompt-guard.agentdiet.dev
- Website: https://prompt-guard.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/prompt-guard-agentdiet-dev-hackernews-developer-ecosystem-real-time-7e01bfb4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Lj_eIkdIeU8ave_n5rGzJ

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-ecosystem-real-time-7e01bfb4
```

Example prompt: What's the current developer sentiment on HackerNews around Rust — is it trending, are people positive about it, and how fast is it moving on the front page?

## When to prefer this

Choose this endpoint when you need real-time developer sentiment specifically sourced from HackerNews — the canonical community for early-adopter engineers, startup founders, and AI researchers. It is best suited for gauging technical community reception of frameworks, AI models, dev tools, and startups, rather than general public or social-media sentiment. Prefer it over generic sentiment APIs when the HackerNews developer perspective is the signal that matters.

## Known failure modes

- Empty or too-broad query returns low-signal or ambiguous results
- HackerNews API rate limits or downtime may cause stale or missing data
- Niche or newly-coined terms may have insufficient discussion data
- Response schema is loosely typed (generic object), so downstream parsing may require defensive handling
- Payment failure via x402 will block access to results

## 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/dev-sentiment)

## Output

Returns a structured object containing developer sentiment analysis derived from live HackerNews discussions, including sentiment polarity, front-page velocity metrics, and relevant discussion signals for the queried technology, startup, library, 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-ecosystem-real-time-7e01bfb4/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)