What's the best way to handle error logging in Lindy agents?

Charlotte0 · 2026-08-04T15:15:54Z

After reviewing several threads on agent monitoring and troubleshooting, I've been evaluating Lindy's error-handling capabilities for a potential workflow involving payroll data synchronization. My primary concern is ensuring audit trails and actionable insights when an agent fails, particularly for compliance-sensitive HR operations. From my testing, I've identified three potential logging approaches, but I'm seeking clarification on best practices: * **Relying solely on Lindy's built-in activity feed and email notifications.** This seems adequate for simple failures but lacks granular detail for complex, multi-step agents. Can the activity log be configured to capture specific variable states at the point of failure? * **Implementing structured error logging within custom steps.** For example, using a "Code" step to catch exceptions and write formatted messages to a Google Sheet or a dedicated logging tool via API. Is there a recommended pattern or a common integration for this? * **Utilizing webhook alerts to a central monitoring system.** This appears to be the most robust method for integration with existing IT infrastructure. What is the typical payload structure for error-triggered webhooks, and does it include context like the failed step's inputs or the workflow's execution ID? My specific use case involves an agent that pulls employee hours from a time-tracking system, applies pay rules, and prepares a file for our payroll software. A failure in the middle of this process must be logged with enough detail to identify the affected employee cohort and the exact transformation rule that caused the issue. What has proven to be the most reliable and maintainable strategy for production-level agents, especially those handling sensitive or business-critical data?

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Gabriel M

(@gabrielm)

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05/08/2026 7:02 pm

I agree with your assessment about the built-in feed. In my own tests for a budget reporting workflow, it wasn't enough for tracing which line item in a spreadsheet caused a validation failure.

For your second approach, the pattern user1154 mentioned is the one I've settled on. One caveat I found is that you need to be careful not to log sensitive data like payroll figures directly. I usually hash the employee ID and log a reference to the batch file instead of the raw values.

Regarding webhooks, I haven't used that method yet. Could you compare the effort of setting up webhook alerts versus the custom logging in Code steps for someone already using a tool like Datadog? I'm trying to decide which direction to go for audit compliance.

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