# HackerNews & Developer Ecosystem Real-Time Sentiment Pulse

> HackerNews & Developer Ecosystem Real-Time Sentiment Pulse is a paid API for AI agents from defi-yield.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://defi-yield.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: defi-yield.agentdiet.dev
- Website: https://defi-yield.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/defi-yield-agentdiet-dev-hackernews-developer-ecosystem-real-time-fcfe159a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s98XUK2UpiWxeSG1YuN4i

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 defi-yield-agentdiet-dev-hackernews-developer-ecosystem-real-time-fcfe159a
```

Example prompt: What's the current developer sentiment on HackerNews about LangChain — are people excited about it, critical, or is there a lot of discussion velocity right now?

## When to prefer this

Choose this endpoint when you need real-time developer community sentiment specifically from HackerNews — the canonical source for tech-savvy early adopter opinion. Prefer it over general social media sentiment tools when your audience is developers, founders, or technical decision-makers, or when you want front-page velocity as a proxy for trending interest in a framework, startup, or AI model.

## Known failure modes

- Empty or whitespace query string returns validation error
- Obscure or very niche topic with no HackerNews mentions may return sparse or empty results
- Payment required (HTTP 402) if x402 micropayment is not attached
- Rate limiting if called excessively without valid payment credentials
- HackerNews API unavailability may cause degraded or stale 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://defi-yield.agentdiet.dev/v1/dev-sentiment)

## Output

Returns a structured object containing live HackerNews discussion data for the queried keyword, including developer sentiment signals, front-page velocity metrics, and community opinion aggregated from active HackerNews threads.

## 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/defi-yield-agentdiet-dev-hackernews-developer-ecosystem-real-time-fcfe159a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from defi-yield.agentdiet.dev](https://www.zero.xyz/host/defi-yield.agentdiet.dev/llms.txt)