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EVM Wallet Token Balances on Base
x402
EVM Wallet Token Balances on Base is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Fetches all token balances for a given 0x EVM wallet address on the Base chain
Price / call$0.003
Success—
StatusUnknown
How this service works
Full wallet portfolio: native ETH + all ERC-20 token balances for an address on Base, with amounts. Send { address }. Let agents read any wallet's holdings.
Output
A list of all token balances held by the specified 0x EVM wallet on the Base chain, including token symbols, contract addresses, and amounts for each asset.
Example use cases
Portfolio snapshot for a DeFi trader
“What tokens am I holding in my Base wallet 0xAbC123...? I want to see every asset and its balance before I decide what to swap.”
Wallet audit before bridging funds
“Check all the token balances in the wallet 0xDef456... on Base — I need to know exactly what's there before I bridge anything over.”
On-chain due diligence on a counterparty
“Can you look up the full token holdings of wallet address 0x789Ghi... on Base? I want to see what they actually own on-chain.”
Technical details
Endpoint
POSThttps://x402-services-production.up.railway.app/api/crypto/balancesWhen to prefer
Use this endpoint when you need a quick, keyless, pay-per-call lookup of all token balances for a specific EVM wallet on Base. It is ideal for AI agents that need on-chain portfolio snapshots without managing API subscriptions or credentials. Prefer this over centralized exchange balance APIs when the user's assets are on-chain on Base specifically.
Side effects
- Invalid or malformed 0x address returns a validation error
- Address with no token activity may return an empty balance list
- Non-Base EVM addresses (e.g. Ethereum mainnet) may return empty or incorrect results since the endpoint is scoped to Base
- Payment failure or insufficient USDC results in a 402 response and no data returned
- Rate limiting or infrastructure issues on Railway may cause timeouts
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| addressrequired | string | 0x EVM wallet address on Base |
Tags
x402
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