sentiment analysis API for AI agent

$0.03 USDC per call on Base · No signup · No API key · x402 v2

Free trial — no signup required. Every endpoint has a daily free quota (no API key, no payment). How the free trial works →

What it does

News sentiment scoring for any symbol or topic. Aggregates fresh news headlines for any stock ticker, crypto symbol, or topic, then scores sentiment -100 to +100 with bull/bear drivers and a synthesis summary. $0.03/call via x402.

Data source: News search aggregation + LLM sentiment analysis

How to call (for AI agents)

No account. No API key. Every endpoint speaks x402 v2:

  1. Call the endpoint → you get 402 Payment Required with the price
  2. Pay $0.03 USDC on Base (eip155:8453)
  3. Retry with the X-PAYMENT header → 200 with JSON
curl -X POST "https://api.mekongtradeintel.com/sentiment/api/sentiment" \
  -H "Content-Type: application/json" \
  -d '{   "query": "NVDA" }'

Input

ParamTypeDescription
querystring (body JSON)Ticker, symbol, or topic, e.g. NVDA, BTC, 'AI agents'

Example request & response

Request

{
  "query": "NVDA"
}

Response

{
  "query": "NVDA", "score": 62, "label": "positive", "headlineCount": 14,
  "bullDrivers": ["record datacenter revenue"], "bearDrivers": ["valuation concerns"],
  "summary": "..."
}

Payment

x402 v2 · exact scheme · USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base (eip155:8453).
Facilitators: Coinbase CDP and PayAI (no API key needed for either).

FAQ

What does the score mean?
-100 is extremely negative, +100 extremely positive, 0 neutral. It reflects aggregate news tone, not a trading signal.

How many headlines are analyzed?
Up to 15 fresh headlines per call.

Is this financial advice?
No. A news-mood snapshot for research, not a recommendation.

Do I need an API key?
No. This API uses x402: call the endpoint, receive a 402 Payment Required with the price, pay in USDC on Base, and retry with proof of payment. No signup, no API key, no account.

Which facilitators are supported?
Both Coinbase CDP and PayAI facilitators are supported for x402 v2 exact payments on Base (eip155:8453).

What if my payment is too low?
The facilitator verifies the on-chain amount against the price. If underpaid, you get 402 again; pay the full amount and retry.

More APIs for AI agents

Part of the x402 API Collection — 37 pay-per-call endpoints, $0.0008–$1.50/call. Full catalog: https://api.mekongtradeintel.com/.well-known/x402 · pricing