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Buyer Spending Policy Check
x402
Buyer Spending Policy Check is a paid API for AI agents from www.mahastrategies.com, paid per call via x402, $0.035/call, status unknown (last checked 2026-10-20).
Validates up to 64 proposed Base-USDC payment calls against a declared budget, per-call cap, allowed payees, and human-approval flag, returning policy mismatches and arithmetic totals without executing any payments.
Price / call$0.035
Success—
StatusUnknown
How this service works
Compare up to 64 proposed Base-USDC calls with a declared total budget, per-call cap, allowed payees and human-approval requirement. Returns policy mismatches and exact arithmetic totals. Does not authorize, sign or execute payments; caller approval labels are not verified.
Output
Returns a structured result containing identified policy mismatches (budget overruns, per-call cap violations, unauthorized payees, missing human-approval flags), computed arithmetic totals across all calls, boundary violation details, an input digest for auditability, and a receipt digest — all without authorizing or signing any transactions.
Example use cases
Agent fleet pre-payment audit
“I have 30 proposed USDC payments my agent wants to make — can you validate them against a total budget of 10000000 base units, a per-call cap of 250000, only allowing payees 0xAAA and 0xBBB, with human approval required on each?”
DeFi spending limit enforcement
“Check these 8 Base-USDC calls against my rules: overall budget 2000000 base units, no single call over 400000, only whitelisted addresses 0x111 and 0x222 allowed, and human approval is not required — flag anything that violates policy.”
Autonomous agent payment guardrail
“Before my trading bot executes, validate its 20 planned USDC payment calls against a budget ceiling of 50000000 base units, a 5000000 per-call cap, payees restricted to [0xFEED, 0xBEEF], and require human approval on all of them — give me any mismatches.”
Technical details
Endpoint
POSThttps://www.mahastrategies.com/api/v1/micro/buyer-spending-policy-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent or automated system needs to pre-flight a batch of Base-USDC payment calls against a declared spending policy before any execution occurs. It is ideal for enforcing guardrails on autonomous payment agents, auditing proposed transactions without any side effects, and producing a cryptographically digestible record of the policy check. Prefer this over generic budget calculators when you need payee allowlisting, per-call caps, and human-approval flag checking in a single deterministic call.
Side effects
- More than 64 calls submitted — request rejected with validation error
- budgetBaseUnits or perCallCapBaseUnits not parseable as integers — arithmetic error returned
- allowedPayees list empty or exceeds 32 entries — schema rejection
- dataClass not one of 'public' or 'synthetic' — enum validation failure
- Caller-declared human-approval labels are not independently verified — policy check reflects declared values only
- Malformed or missing required fields — 400-level error with field-level detail
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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