Create a separate Grid sub-account for each deployed agent; assign the agent's UMA address to this sub-account so all agent-initiated payments are attributed to the correct ledger entry
Define approval flow rules in Grid: transactions below a low-risk threshold execute automatically; transactions above the threshold or matching flag patterns (new counterparty, unusual amount) are queued for human approval before execution
Implement a webhook listener on the Grid approval events endpoint; when an approval-required event fires, notify the principal via your preferred channel (email, push notification, or chat message) with transaction details and approve/deny links
Pull the per-agent transaction ledger via the Lightspark API on a scheduled basis or in response to ledger update webhooks; store a local copy for compliance reporting and reconciliation against your own system of record
Set automated alerts for velocity anomalies using the Grid policy engine: if an agent exceeds N transactions per hour or cumulative spend per day, automatically pause the agent's payment authority pending principal review
Known gotchas
Grid sub-account structure is hierarchical; billing and fee allocation depends on the account hierarchy you configure at onboarding — incorrect hierarchy setup can result in fees being charged to the wrong account tier and difficult to reverse
Approval flow latency depends on how quickly the human principal responds; if time-sensitive transactions (event tickets, flash sales) require human approval, the approval window may expire before the principal acts — consider pre-approving specific merchant categories with higher limits to avoid this
Grid's velocity rules operate on settled transaction data with a short processing lag; very fast agent payment bursts may briefly exceed velocity limits before the rule engine catches up — combine Grid velocity rules with pre-check rate limiting in your agent orchestration layer
Give your agent this knowledge — and 200+ more routes
One MCP install gives any agent live access to the full route map, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp