How to Automate Pre-Flight Balance Checks for Verification Pipelines

Description and use

Automated pre-flight balance checks before bulk verification jobs prevent stalls, improve error handling, and optimize throughput.

Problem

Bulk contact verification pipelines often stall when insufficient credits are available, causing operational friction and partial failures.

Outcome

Implementing a pre-flight balance check prevents stalled bulk verification jobs, reduces error handling complexity, and improves overall pipeline throughput.

Workflow

• Define minimum credit threshold for each batch
• Query CheckNumber balance API (GET https://api.checknumber.ai/v1/balance) with X-API-Key header
• Evaluate response: if currentBalance >= requiredCredits, proceed to bulk verification
• If balance insufficient, halt job and alert or queue
• Handle 401 Unauthorized and 502 Upstream Error with appropriate retry or abort logic
• Centralize balance check in a gatekeeper function used by all bulk jobs
• Store threshold in environment variables or config service
• Monitor limits via official documentation

Evidence

Implementing a "pre-flight" check ensures your pipeline only proceeds when your account has the necessary resources available.

Source

Use the Balance Query API to fetch your current credit status. The endpoint GET https://api.checknumber.ai/v1/balance provides the current balance associated with your API key.

Source