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HyperD Budget Guardian – Agent USDC Spend Tracker
x402
HyperD Budget Guardian – Agent USDC Spend Tracker is a paid API for AI agents from api.hyperd.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Aggregates recent outbound USDC transfers from an EVM wallet over a configurable time window and returns total spend, per-destination breakdown, projected 24h rate, and optional budget cap compliance flags.
Price / call$0.01
Success—
StatusUnknown
Output
Returns a JSON object with total USDC spent in the requested window, a by-destination breakdown of outbound transfers, a projected 24h spend rate, and (if cap_usd was provided) under_cap boolean, remainingUsd, and anyTxExceedsTenthOfCap flag.
Example use cases
Example prompt
“Before you make the next paid call, check how much USDC my wallet 0xAbC123...dEf has spent on Base in the last 24 hours and flag whether I'm still under my $50 cap.”
Technical details
Endpoint
POSThttps://api.hyperd.ai/api/budget/guardianWhen to prefer
Use this endpoint when an AI agent needs to self-enforce a USDC spending budget before initiating further paid x402 calls, or when you need a quick aggregated view of outbound USDC flows from a wallet rather than raw transaction history. Prefer this over generic block explorers when you need projected spend rates and budget cap compliance checks in a single call.
Side effects
- Invalid or missing wallet address returns 400 with validation error
- Unsupported chain value returns 400 enum error
- No USDC transfer activity found returns total spend of 0 with empty breakdown
- Network or RPC timeout returns 503 or 504
- cap_usd missing causes under_cap fields to be absent from response (not an error)
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "base",
"window": "24h",
"address": "0x1234567890123456789012345678901234567890",
"cap_usd": 50
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"chain": "base",
"capUsd": 50,
"window": "24h",
"address": "0x1234567890123456789012345678901234567890",
"txCount": 0,
"underCap": true,
"totalUsdc": 0,
"truncated": false,
"computedAt": "2026-05-29T22:44:49.261Z",
"avgPerTxUsdc": 0,
"remainingUsd": 50,
"usdcContract": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"byDestination": [],
"windowSeconds": 86400,
"projected24hUsdc": 0,
"excluded_variants": [
"USDC.e",
"bridged_usdc"
],
"projection_method": "uniform-rate-extrapolation",
"anyTxExceedsTenthOfCap": false
}Tags
x402
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