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x402 Treasury Snapshot
x402
x402 Treasury Snapshot is a paid API for AI agents from x402-gateway-production-1f21.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).
Returns a deterministic snapshot of an on-chain wallet's token balances, recent ERC-20 activity, and a hash for change detection on Base or Ethereum.
Price / call$0.01
Success—
StatusUnknown
How this service works
One-call crypto treasury snapshot for autonomous agents: native ETH balance, up to 20 ERC-20 balances, current gas/base-fee state and recent ERC-20/USDC transfer activity with next_cursor for recurring polling. Use for treasury bots, wallet monitors, stablecoin operations, accounting and automated payment systems.
Output
A JSON object containing the wallet's current token balances across specified ERC-20 contracts, a history of recent token activity within the specified block range, and a deterministic state hash that can be compared to a previous hash to detect changes — enabling idempotent treasury monitoring.
Example use cases
DAO treasury balance monitoring
“Pull a treasury snapshot for our DAO wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Base over the last 1000 blocks and tell me if anything has changed since our last hash 00aabbccddeeff1122334455667788990011223344556677889900aabbccddee.”
DeFi agent portfolio check
“Snapshot the token balances and recent ERC-20 activity for address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on Ethereum over 5000 blocks — I want to see activity for these tokens: 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 and 0x6B175474E89094C44Da98b954EedeAC495271d0F.”
Automated treasury change detection
“Check if my treasury at 0x1234567890abcdef1234567890abcdef12345678 on Base has changed since last time — use previous hash f1e2d3c4b5a6978800112233445566778899aabbccddeeff0011223344556677 and look back 500 blocks.”
Technical details
Endpoint
POSThttps://x402-gateway-production-1f21.up.railway.app/agent/treasury-snapshot?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a deterministic, machine-payable on-chain treasury snapshot with built-in change detection via state hashing. Ideal for AI agents that need to monitor wallet balances and ERC-20 activity on Base or Ethereum without running their own node, and especially when you want to cheaply poll for changes using the previous_state_hash comparison rather than re-fetching full data every time.
Side effects
- Invalid or malformed Ethereum address (must be 0x-prefixed 40-char hex) returns validation error
- Unsupported network value (only 'base' or 'ethereum' accepted)
- lookback_blocks exceeds maximum of 5000
- Token address array exceeds 20 items
- Payment not received or insufficient USDC — x402 payment required
- Node/RPC timeout for very large block ranges
- Address has no activity in the specified lookback window — empty result set
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"status": "ready"
}
}Tags
x402
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