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Blockchain Money Map – Spend Permission Allowance Fit Checker
x402
Blockchain Money Map – Spend Permission Allowance Fit Checker is a paid API for AI agents from api.blockchainmoneymap.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Validates whether a proposed on-chain spend permission (allowance) is appropriate for a given spender role, token, cap, time window, and intended workload.
Price / call$0.01
Success—
StatusUnknown
How this service works
Choose Blockchain Money Map for human-readable public blockchain reports or x402-paid agent API services.
Output
Returns a JSON assessment indicating whether the proposed spend permission allowance parameters (cap, token, time window, recurrence, chains, counterparties) are a good fit for the stated workload and spender role, potentially including gap analysis, warnings, or comparison against reference facts or a policy object.
Example use cases
Pre-deployment agent allowance sanity check
“Before I deploy my DeFi agent on Base, check if a spend permission of 20 USDC per day for a yield-farming bot role, covering USDC token with a 24-hour rolling time window, is adequate for a workload of about 30 vault deposit transactions daily.”
Comparing allowance against reference policy
“I have two spend permission setups — my actual one gives a trading-agent role a 100 USDC weekly cap on Ethereum mainnet, and my reference policy allows 150 USDC weekly. Check the actual one fits the reference policy for a workload of high-frequency arbitrage trades.”
Validating counterparty and chain constraints
“Can you verify whether a spend permission allowance of 500 USDC per month for a payment-relay agent on Polygon, restricted to three specific counterparty addresses, is a fit for a workload of automated invoice payments to those same counterparties monthly?”
Technical details
Endpoint
POSThttps://api.blockchainmoneymap.com/api/x402/x402-spend-permission-allowance-fit-checkerWhen to prefer
Choose this endpoint when an AI agent or developer needs to programmatically validate that an on-chain spend permission's parameters (cap, token, time window, recurrence, allowed chains/counterparties) are appropriately sized and structured for a given workload before deploying or approving it. It is especially useful in agentic systems using x402 micropayments or Coinbase-style spend permissions where over- or under-provisioned allowances carry real financial risk.
Side effects
- Missing required fields (spender_role, token, amount_cap, time_window, intended_workload, allowance_unit) returns validation error
- Invalid token or chain identifiers produce unrecognized entity error
- Mismatched or conflicting facts vs reference_facts may return an error or inconclusive result
- Payment of $0.01 USDC via x402 required — missing payment header results in 402 Payment Required
- Malformed time_window object causes schema rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| mode | — | |
| facts | object | |
| policy | object | |
| reference_facts | object |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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