# 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 framework, startup, library, or AI model keyword

## Facts

- Endpoint: GET https://defi-yield.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: 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-61e804c4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_X5w9f86ywQsM_KmHfYzCd

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-61e804c4
```

Example prompt: What's the current developer sentiment and HackerNews velocity for the Bun JavaScript runtime — is it trending on the front page and what are people saying about it?

## When to prefer this

Use this endpoint when you need real-time developer community sentiment specifically from HackerNews — the canonical gathering place for engineers and technical founders. Prefer this over general social media sentiment APIs when your audience is developers, when evaluating a technical tool's adoption trajectory, or when you need front-page velocity as a proxy for community momentum rather than raw mention counts.

## Known failure modes

- Empty or too-generic query returns no meaningful results
- HackerNews API rate limiting causes delayed or incomplete data
- Very niche or newly coined technology names yield sparse discussion data
- Ambiguous keyword (e.g. 'Apple') may return mixed or irrelevant results
- Payment failure via x402 protocol prevents endpoint access

## 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/hackernews-velocity-radar)

## Output

Returns live HackerNews discussion data for the queried keyword, including front-page velocity (how fast posts are gaining traction), developer sentiment signals derived from comments and upvotes, and relevant discussion threads or post summaries related to the specified 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/defi-yield-agentdiet-dev-hackernews-developer-ecosystem-real-time-61e804c4/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)