Real-time crypto news with sentiment scores and token mentions. Multi-source aggregation for trading signals. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

json

{
  "mcpServers": {
    "crypto-news": {
      "url": "https://crypto-news.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

bash

curl "https://crypto-news.api.klymax402.com/api/news"
# -> 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

Tool	Method	Path	Price	Description
`crypto_get_latest_news`	GET	`/api/news`	$0.005	Get latest crypto news with sentiment scores and token mentions

`crypto_get_latest_news`

Use this when you need the latest crypto news and market-moving headlines. Returns aggregated articles with sentiment in JSON.

Parameters

Name	Type	Required	Description
`limit`	number	no	Number of articles to return (default 20, max 100).
`token`	string	no	Filter by token symbol (e.g. BTC, ETH, SOL). Optional — returns all if omitted.

Returns

articles -- array of news items with title, url, source, publishedAt
sentiment -- sentiment score per article (-1 to +1, negative=bearish, positive=bullish)
mentionedTokens -- array of token symbols mentioned in each article
category -- article category (market, regulation, defi, nft, technology)
source -- news source name (CoinGecko, CryptoPanic, RSS)

Example response:

json

{"articles":[{"title":"ETH breaks $3,200 resistance","url":"https://...","source":"CryptoPanic","publishedAt":"2026-04-13T10:30:00Z","sentiment":0.72,"mentionedTokens":["ETH"],"category":"market"}],"total":20}

When to use: market sentiment analysis, news-driven trading signals, and staying updated on crypto events. Filter by token to get focused news.

Not for: price data (use finance_get_token_price), historical candles (use token_get_ohlcv_history), funding rates (use perp_scan_funding_arbitrage), whale movements (use crypto_track_whale_transactions).

Example agent prompts

"The latest crypto news and market-moving headlines"

Payment

Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
Network: Base L2 (eip155:8453)
Asset: USDC
Facilitator: Coinbase CDP (primary), PayAI (fallback)
Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)