Tool detail

spend-guard

Tracks an agent's cumulative spend against a budget cap and reports whether a proposed charge would exceed it.

Categories: Payments

Use when

check whether a proposed payment would exceed an agent's spending cap
set or raise an agent's spend budget

Not for

not sanctions/OFAC screening (see /screen) or payment settlement proof (see /verify-payment)

Inputs

GET query params: agentId (string, required); amountUsd (number, optional); budgetUsd (number, optional, sets/raises the cap)

Admitted input schema

{
  "type": "object",
  "properties": {
    "agentId": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "description": "Stable identifier for the spending agent"
    },
    "amountUsd": {
      "type": "number",
      "minimum": -9007199254740991,
      "maximum": 9007199254740991,
      "description": "Amount about to be spent (USD)"
    },
    "budgetUsd": {
      "type": "number",
      "minimum": -9007199254740991,
      "maximum": 9007199254740991,
      "description": "Optional: set/raise this agent's budget (USD)"
    }
  },
  "required": [
    "agentId"
  ],
  "additionalProperties": false
}

Endpoint

Method: GET
URL: https://api.x402agentic.ai/spend-guard

Payment

Protocol: x402
Listed price: 0.01 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: GET https://api.x402agentic.ai/spend-guard
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z