Cap agent purchases with action policy cost limits

Agents that book travel or buy SaaS can exceed budget in a single tool call. Cap purchase-shaped actions with ActionPolicy before the tool runs.

Define the procurement policy

• Allow only the purchase-shaped types you intend (http_post, or your adapter's purchase type).
• Set max_cost_minor so a single booking cannot exceed your ceiling (for example $600.00 → 60000).
• Deny everything else, or park high-risk types as approval_required.

import { createSlimActionPolicy } from "@limetry/sdk"

const policy = createSlimActionPolicy({
  allowedTypes: ["http_post"],
  maxCostMinor: 60000,
  requireApprovalActionTypes: ["http_post"],
  auditMode: "minimal",
})

If the agent proposes a $1,200 purchase, evaluate returns deny (or approval_required when configured) before the tool runs.

Run evaluate with the self-run server or SDK locally. See the quick start.

See the OpenAI procurement example.