Agent skill · software engineering · jeremylongshore
customerio-sdk-patterns
Apply production-ready Customer.io SDK patterns.
Why this skill is useful
Provides specific implementation patterns and retry logic for the Customer.io SDK that the AI wouldn't reliably generate on its own.
What it needs
Requires customerio-node installed locally. About 5k tokens when loaded. Last updated 2026-08-07. 2,604 stars on the source repository.
What this skill does
Customer.io SDK Patterns Output A reusable SDK integration pattern with scoped configuration, schema validation, idempotency, observability, and error classification. A test-backed client boundary that keeps credentials and recipient data out of logs and source control. Examples Instantiate the client from an environment-specific secret reference, validate a synthetic event against the contract, attach a stable idempotency key, and assert the SDK call in a mocked unit test. For a development integration test, use a synthetic profile and record only result status/correlation ID; never log the client token or full event payload. Overview Production-ready patterns for customerio-node: type-safe wrappers with enum-constrained events, retry with exponential backoff, event batching for high-volume scenarios, and singleton lifecycle management. Prerequisites customerio-node installed TypeScript project (recommended for type-safe patterns) Understanding of your event taxonomy Instructions Pattern 1: Type-Safe Client Wrapper Pattern 2: Retry with Exponential Backoff Pattern 3: Event Queue with Batching Pattern 4: Singleton with Validation Pattern Summary Pattern When to Use Key Benefit --------- ------------ ------------- Typed Client Always Compile-time safety on events + attributes Retry + Backoff Production API calls Handles transient 5xx and 429 errors Batch Queue High-volume tracking (>100 events/sec) Reduces connection overhead, respects rate limits Singleton Factory Multi-module apps Prevents connection leaks, validates config once Error Handling Error Cause Solution ------- ------- ---------- Type mismatch Wrong event data shape Use TypeScript union types for events Queue memory growth Events produced faster than flushed Lower batchSize, increase flush frequency Retry exhausted (3x) Persistent API failure Check credentials, Customer.io status page Singleton null credentials Env vars not loaded Ensure dotenv loads before client creation Resources customerio-node SDK T …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills jeremylongshore/customerio-sdk-patterns