# HN Pulse – Hacker News Story Digest via AgentDiet MCP Gateway

> HN Pulse – Hacker News Story Digest via AgentDiet MCP Gateway is a paid API for AI agents from mcp-gateway.agentdiet.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Returns a compressed, AI-ready digest of trending or queried Hacker News stories and discussions, settling payment in USDC on Base via x402.

## Facts

- Endpoint: GET https://mcp-gateway.agentdiet.dev/v1/hn-pulse?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hn-pulse-hacker-news-story-digest-via-agentdiet-mcp-gateway-039a34bb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_M13fwXYK2E5RG0L3AXRf3

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 hn-pulse-hacker-news-story-digest-via-agentdiet-mcp-gateway-039a34bb
```

Example prompt: Give me a compressed digest of what's trending on Hacker News right now, especially anything about AI or LLMs.

## When to prefer this

Choose this endpoint when you need a machine-optimized, compressed digest of Hacker News content that is ready for agent consumption without heavy post-processing. The high compression ratio (91%+) makes it ideal for token-budget-constrained agents. Prefer over raw HN API scraping when you want pre-digested, ROI-proven summaries delivered cheaply at $0.01 USDC per call.

## Known failure modes

- Payment not settled in USDC on Base — returns 402 Payment Required
- Missing required 'input' object or 'type'/'method' fields — returns validation error
- Upstream Hacker News unavailable — may return empty or error data payload
- Invalid query parameter type — schema validation failure

## How this service works

Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://mcp-gateway.agentdiet.dev settling in USDC on Base.

## Output

A JSON object with a 'data' field containing the HN story digest, a 'status' field ('ok' on success), and an 'roi_proof' object including a compression_ratio_pct metric (e.g. 91.4%) indicating how much the raw content was compressed into the digest.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "POST"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "query": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "status": "ok",
  "roi_proof": {
   "compression_ratio_pct": 91.4
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hn-pulse-hacker-news-story-digest-via-agentdiet-mcp-gateway-039a34bb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-gateway.agentdiet.dev](https://www.zero.xyz/host/mcp-gateway.agentdiet.dev/llms.txt)