# klymax402 Crypto News API

> klymax402 Crypto News API is a paid API for AI agents from klymax402.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Fetches recent cryptocurrency news articles with optional token filtering and sentiment summary

## Facts

- Endpoint: GET https://klymax402.com/api/crypto-news/api/news
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/klymax402-crypto-news-api-8f256b38
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_flhEsYAuQzdJODW7pSb1V

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 klymax402-crypto-news-api-8f256b38
```

Example prompt: Can you pull the latest 20 crypto news articles filtered to Bitcoin and tell me the overall sentiment?

## When to prefer this

Choose this endpoint when you need aggregated crypto news with built-in sentiment analysis and optional token-level filtering in a single call, without managing multiple news API keys. Ideal for agents that need to surface market sentiment or recent headlines for a specific cryptocurrency like BTC, ETH, or SOL as part of a broader financial workflow.

## Known failure modes

- Invalid or unrecognized token symbol returns empty articles array
- limit parameter exceeding 100 may be clamped or rejected
- Payment failure (402) if USDC balance on Base is insufficient
- Upstream news source outage may return empty or stale results
- Missing required input object structure returns schema validation error

## How this service works

One MCP endpoint gives your AI agent access to 100 APIs -- crypto, DeFi, web, AI, finance and utilities. No API keys, USDC on Base from $0.003/call.

## Output

A JSON object containing the total result count, a list of news articles, the list of sources, a timestamp, the applied token filter, total number of articles fetched upstream, and a sentiment summary object breaking down article sentiment across the filtered set.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "limit": {
       "type": "number",
       "description": "Number of articles to return (default 20, max 100)."
      },
      "token": {
       "type": "string",
       "description": "Filter by token symbol (e.g. BTC, ETH, SOL). Optional — returns all if omitted."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "results": 1,
  "sources": [],
  "articles": [],
  "timestamp": "example",
  "tokenFilter": "example",
  "totalFetched": 1,
  "sentimentSummary": {}
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/klymax402-crypto-news-api-8f256b38/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from klymax402.com](https://www.zero.xyz/host/klymax402.com/llms.txt)