crypto token price API for AI agent

$0.0008 USDC per call on Base · No signup · No API key · x402 v2

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What it does

Real-time crypto token prices. Get the current USD price, 24h change, and 24h volume for any major crypto token by ticker or contract address. Sub-cent pricing for high-frequency agent use.

Data source: Aggregated DEX + CEX price feeds

How to call (for AI agents)

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

Call the endpoint → you get 402 Payment Required with the price
Pay $0.0008 USDC on Base (eip155:8453)
Retry with the X-PAYMENT header → 200 with JSON

curl -X POST "https://api.mekongtradeintel.com/tokenprice/api/token-price" \
  -H "Content-Type: application/json" \
  -d '{   "ticker": "ETH" }'

Input

Param	Type	Description
`ticker`	JSON body	Token ticker, e.g. BTC, ETH
`address`	JSON body, alt.	Token contract address
`chain`	JSON body, alt.	Chain, e.g. base

Example request & response

Request

{
  "ticker": "ETH"
}

Response

{
  "symbol": "ETH",
  "price_usd": 3421.55,
  "change_24h_pct": 2.34,
  "volume_24h_usd": 18200000000
}

Payment

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

FAQ

How often do prices update?
Every ~60 seconds for major tokens.

Which tokens are covered?
Top 500 tokens by market cap, plus major Base-native tokens.

Can I get historical prices?
This endpoint returns the current spot price only.

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