curl -X PUT https://api.saturn-pay.com/v1/agents/agt_abc123/policy \
  -H "Authorization: Bearer sk_agt_..." \
  -H "Content-Type: application/json" \
  -d '{
    "maxPerCallUsdCents": 100,
    "maxPerDayUsdCents": 1000,
    "allowedCapabilities": ["reason", "search", "read", "execute"]
  }'

const response = await fetch('https://api.saturn-pay.com/v1/agents/agt_abc123/policy', {
  method: 'PUT',
  headers: {
    'Authorization': 'Bearer sk_agt_...',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    maxPerCallUsdCents: 100,
    maxPerDayUsdCents: 1000,
    allowedCapabilities: []  // Allow all
  })
});

{
  "maxPerCallUsdCents": 100,
  "maxPerDayUsdCents": 1000,
  "allowedCapabilities": ["reason", "search", "read", "execute"],
  "dailySpentUsdCents": 0
}