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Klaviyo Integration Guide
Klaviyo integrates with enterprise systems through versioned REST APIs, selected webhook notifications, bulk profile operations, reporting APIs, and scoped authentication.
Klaviyo integration options at a glance
Klaviyo’s primary integration surface is its versioned REST API for Profiles, Events, Metrics, Campaigns, Flows, Lists, Segments, catalog resources, and reporting. Klaviyo also provides selected-event webhook notifications and resource-specific bulk operations, including bulk profile updates and asynchronous profile import jobs. Private API keys support many server-to-server integrations, while OAuth 2.0 is suited to applications connecting to multiple Klaviyo accounts. Martini can consume these APIs from workflows, receive supported webhook notifications, expose controlled APIs, map and validate data, and coordinate pagination, retries, reconciliation, and asynchronous job polling.
| Integration point | Supported by Klaviyo? | Common use cases | How Martini supports it |
|---|---|---|---|
| REST APIs | Yes | Klaviyo’s primary integration interface supports Profiles, Events, Metrics, Campaigns, Flows, Lists, Segments, catalog resources, and reporting. Requests require an API revision header. | Martini can consume Klaviyo REST endpoints from workflows, generate reusable API integration assets from external definitions where available, map responses, and expose controlled APIs for internal consumers. |
| Webhooks and outbound callbacks | Limited | Klaviyo supports webhook subscriptions for selected notification topics. Coverage is not universal for every Klaviyo change and topics must be verified. | Martini can expose an API endpoint or webhook workflow, validate notifications, retrieve authoritative objects when needed, and apply idempotent processing and reconciliation. |
| Bulk and asynchronous APIs | Yes | Bulk profile operations and asynchronous profile import jobs support initial loads, migrations, and large audience updates. Availability varies by resource. | Martini can submit bulk operations, store job identifiers, poll for completion, capture item-level failures, and retry transient failures. |
| Reporting and analytics APIs | Yes | Reporting and metric-related APIs can provide campaign, flow, metric, and performance data for operational or enterprise analytics. | Martini can schedule paginated reads, normalize reporting responses, maintain watermarks, and write results to data platforms or internal APIs. |
| Authentication | Yes | Private API keys support server-to-server access, while OAuth 2.0 supports third-party applications acting on behalf of Klaviyo accounts. Access is controlled by scopes and permissions. | Martini can store keys, OAuth credentials, tokens, and revision values in secure environment configuration and use them in API workflows without embedding secrets in mappings. |
| GraphQL APIs | Not confirmed | A current public Klaviyo GraphQL API was not confirmed in the reviewed documentation, so GraphQL should not be assumed for a new integration. | Martini supports GraphQL consumption generally, but a Klaviyo GraphQL integration should not be designed without confirmed vendor documentation. |
| SOAP APIs | No | No current public Klaviyo SOAP API was confirmed. SOAP is not recommended for a new Klaviyo integration. | Martini can consume SOAP services generally, but Klaviyo integrations should use confirmed REST, webhook, bulk, or reporting mechanisms instead. |
| Database access | No | Klaviyo does not expose a general-purpose operational database connection such as JDBC. Analytics access should use documented APIs or supported export mechanisms. | Martini can connect to target databases for persistence and analytics delivery, but it should access Klaviyo through documented APIs rather than direct database connectivity. |
How Klaviyo exposes data and business events
Klaviyo REST APIs
Klaviyo’s versioned REST API is the primary integration surface for Profiles, Events, Metrics, Campaigns, Flows, Lists, Segments, catalog resources, and reporting. Requests require a revision header, and collection responses are commonly paginated.
Martini implementation pattern
Martini implementation pattern: a workflow authenticates with a scoped private API key or OAuth token, sets the configured Klaviyo API revision, retrieves or submits resources, maps the payload into canonical models, and records checkpoints, response metadata, and errors.
Implementation sequence
Klaviyo Webhooks
Klaviyo provides webhook subscriptions for selected notification topics. Notifications do not represent a universal stream of every Profile, Event, Campaign, or Flow change, so supported topics and permissions must be confirmed.
Martini implementation pattern
Martini implementation pattern: expose a controlled Martini API or webhook workflow, validate the inbound request, apply duplicate detection, retrieve the authoritative Klaviyo object when the notification is incomplete, and route a normalized event to internal systems.
Implementation sequence
Klaviyo Bulk Profile Operations
Klaviyo supports bulk profile operations and asynchronous profile import jobs for selected profile use cases. These mechanisms are useful for migrations, initial loads, and large audience updates rather than every resource type.
Martini implementation pattern
Martini implementation pattern: a workflow validates and chunks source profiles, submits a bulk or import job, stores the returned job identifier, polls for completion, and captures item-level failures for replay or correction.
Implementation sequence
Klaviyo Reporting APIs
Klaviyo provides reporting and metric-related APIs for campaign, flow, metric, and performance analysis. Exact dimensions, attribution windows, and endpoint behavior should be verified against the selected API revision.
Martini implementation pattern
Martini implementation pattern: a scheduled workflow reads reporting data incrementally, follows pagination, normalizes dimensions and timestamps, writes results to an analytics target, and preserves the watermark used for the next run.
Implementation sequence
Klaviyo Authentication
Klaviyo supports scoped private API keys for many server-to-server integrations and OAuth 2.0 for third-party applications connecting to customer-managed accounts. Public API keys are not a substitute for protecting private credentials.
Martini implementation pattern
Martini implementation pattern: store credentials and revision values in secure environment configuration, select private-key or OAuth authorization according to the deployment model, and keep secrets out of workflow mappings, logs, and responses.
Implementation sequence
Common Klaviyo integration patterns
Pattern 1: Synchronize customers and consent to Klaviyo
When to use this pattern
Use this pattern when a CRM or commerce platform is the system of record for customer identity, profile attributes, or marketing consent. It supports initial loads as well as incremental updates while preventing stale consent from overwriting newer Klaviyo or source-system decisions.
Integration direction
Example Mapping
| Klaviyo Field | Canonical Field | Target Field |
|---|---|---|
| contact.email | customer.email | Profile.email |
| contact.phone | customer.phone | Profile.phone_number |
| contact.marketingConsent | consent.email | Profile subscription status |
| contact.updatedAt | customer.updatedAt | Profile update checkpoint |
Martini implementation pattern
A Martini workflow retrieves changed source customers, validates identity and consent timestamps, maps attributes into Klaviyo Profiles, and updates Lists only when explicit subscription rules allow it. The workflow uses pagination, rate-limit-aware retries, stable identity keys, and a reconciliation path for rejected or stale updates.
Martini capabilities used
- workflows
- API consumption
- data mapping
- business rules
- secrets management
- error handling
Pattern 2: Send commerce events to Klaviyo
When to use this pattern
Use this pattern when orders, product views, cart activity, or shipment changes from a commerce application must drive Klaviyo personalization and automation. Standardizing event identity prevents fragmented reporting and duplicate activity.
Integration direction
Example Mapping
| Klaviyo Field | Canonical Field | Target Field |
|---|---|---|
| order.id | commerce.orderId | Event.order_id |
| customer.email | customer.email | Event.profile.email |
| order.total | commerce.orderTotal | Event.value |
| order.lineItems | commerce.items | Event.properties.items |
Martini implementation pattern
Martini receives or retrieves commerce changes, applies event naming and profile-identity rules, reduces large line-item structures to required fields, and submits Klaviyo Events. A source event ID or order-and-event key supports deduplication; transient failures are retried while validation failures are routed for correction.
Martini capabilities used
- workflows
- API consumption
- data transformation
- validation
- business rules
- retry handling
Pattern 3: Process selected Klaviyo webhook notifications
When to use this pattern
Use this pattern when internal applications need near-real-time awareness of supported Klaviyo notifications, such as selected changes or subscription topics. It should be combined with scheduled reconciliation when webhook coverage is incomplete.
Integration direction
Example Mapping
| Klaviyo Field | Canonical Field | Target Field |
|---|---|---|
| webhook.data.id | klaviyo.objectId | Salesforce external ID |
| webhook.type | event.type | Salesforce activity type |
| webhook.occurredAt | event.occurredAt | Salesforce activity timestamp |
| webhook.data.attributes | klaviyo.attributes | Salesforce mapped fields |
Martini implementation pattern
A Martini API or webhook workflow validates the inbound notification, checks an idempotency store, retrieves the current Klaviyo object if necessary, and maps it to the target application. Duplicate notifications are safely acknowledged, while incomplete or failed processing is retried or sent to exception handling.
Martini capabilities used
- API exposure
- webhook consumption
- data mapping
- idempotency
- API consumption
- error handling
Pattern 4: Load Klaviyo reporting data into analytics
When to use this pattern
Use this pattern when campaign, flow, metric, or reporting data must be consolidated in a warehouse or reporting database for operational and finance analysis. It is appropriate for scheduled incremental synchronization rather than assuming a universal full export.
Integration direction
Example Mapping
| Klaviyo Field | Canonical Field | Target Field |
|---|---|---|
| campaign.id | marketing.campaignId | campaign_id |
| metric.name | marketing.metricName | metric_name |
| reporting.value | marketing.measureValue | measure_value |
| reporting.timestamp | marketing.observedAt | observed_at |
Martini implementation pattern
A scheduled Martini workflow reads the last successful watermark, requests paginated reporting data using the configured API revision, normalizes dimensions and attribution fields, and writes incremental results. The workflow advances the checkpoint only after successful persistence and retains failed pages for replay.
Martini capabilities used
- scheduled workflows
- API consumption
- pagination
- data mapping
- database or API delivery
- monitoring
Applications commonly integrated with Klaviyo
Klaviyo commonly participates in customer-data, commerce, marketing, support, and analytics architectures. Martini can mediate these application flows when organizations need centralized mapping, governance, reconciliation, and operational control.
| Application | Scenario | Direction | Martini Pattern |
|---|---|---|---|
| Shopify | Synchronize customers, products, orders, and commerce events to support personalized marketing and lifecycle automation. | Shopify → Martini → Klaviyo | Use scheduled or event-driven workflows to read Shopify changes, normalize customer and commerce data, upsert Klaviyo Profiles, and submit standardized Events with idempotency keys and retry handling. |
| Salesforce | Synchronize CRM contacts, leads, accounts, and engagement information with Klaviyo Profiles and marketing activity. | Salesforce → Martini → Klaviyo | Orchestrate bidirectional API workflows that map Salesforce identities and consent fields to Profiles and Lists, while routing selected Klaviyo activity back to Salesforce after validation and deduplication. |
| Adobe Commerce | Send catalog, customer, order, and browsing data to Klaviyo for commerce marketing workflows. | Adobe Commerce → Martini → Klaviyo | Consume Adobe Commerce APIs or events, transform orders and line items into Klaviyo Events, and use bulk profile operations for initial loads or large audience updates. |
| BigCommerce | Transfer storefront customers, products, orders, and behavioral events into Klaviyo. | BigCommerce → Martini → Klaviyo | Run workflows that retrieve changed commerce objects, map profile identifiers and event properties, submit Klaviyo API requests, and reconcile failed or rate-limited batches. |
| WooCommerce | Synchronize WordPress commerce customers, orders, and product activity with Klaviyo. | WooCommerce → Martini → Klaviyo | Expose or consume APIs for order and customer changes, apply canonical customer and consent mappings, and send validated Profile and Event payloads to Klaviyo. |
| Segment | Forward standardized customer and event data into Klaviyo while retaining Segment as an event collection layer. | Segment → Martini → Klaviyo | Use Martini as a governed mediation layer to validate Segment payloads, normalize event names and identities, apply routing rules, and submit Klaviyo Events with duplicate protection. |
| Zendesk | Combine support interactions and customer attributes with Klaviyo Profiles for service-aware marketing and suppression rules. | Zendesk → Martini → Klaviyo | Retrieve supported Zendesk customer or ticket information, apply consent and suppression rules, and update Klaviyo Profiles or downstream internal systems through reusable workflows. |
| Snowflake | Export Klaviyo customer, event, campaign, or reporting data for enterprise analytics and retention analysis. | Klaviyo → Martini → Snowflake | Schedule paginated Klaviyo API reads, normalize reporting and object data, maintain synchronization watermarks, and write validated incremental data to Snowflake through the organization’s database or API interface. |
How to build a Klaviyo integration in Martini
Objective
Select the Klaviyo authentication model and make credentials, scopes, API base configuration, and revision values environment-specific.
Instructions in Martini
- Choose a scoped private API key for server-to-server access or OAuth 2.0 for multi-account applications
- Store credentials, tokens, and the revision header in Martini secrets or secure environment configuration
- Keep credentials out of workflow mappings, source code, logs, and responses
Objective
Select an event-driven, API-led, or scheduled starting point based on the completeness and timeliness required by the integration.
Instructions in Martini
- Use a Martini API or webhook workflow for supported Klaviyo notifications
- Use a scheduler for profile, reporting, campaign, flow, or reconciliation reads
- Use source-application events where commerce or CRM systems are the system of record
Objective
Acquire Klaviyo data through confirmed REST, webhook, bulk, import, or reporting mechanisms without assuming universal event coverage.
Instructions in Martini
- Receive and validate selected Klaviyo webhook notifications
- Call the required REST endpoint and follow pagination
- Track asynchronous bulk or import job identifiers and poll their status
- Use scheduled reconciliation for objects not fully covered by webhooks
Objective
Coordinate API calls, enrichment, branching, persistence, and exception handling as a maintainable Martini workflow.
Instructions in Martini
- Separate retrieval, validation, mapping, target delivery, and checkpoint updates
- Apply conditional routing for consent, object type, account, or processing status
- Use reusable services or workflow components for common Klaviyo request and error logic
Objective
Normalize Klaviyo and source-system structures into canonical customer, consent, event, reporting, and target models.
Instructions in Martini
- Map Profile identity fields and consent values explicitly
- Standardize Event names, timestamps, profile identifiers, and properties
- Reduce large commerce payloads to the fields required by Klaviyo and downstream systems
- Validate required fields and API-revision-sensitive structures
Objective
Protect data quality, compliance, and synchronization semantics before writing to Klaviyo or downstream systems.
Instructions in Martini
- Prevent stale consent from overwriting newer consent decisions
- Apply deterministic duplicate detection for Events and webhook notifications
- Route unsupported webhook topics, invalid permissions, and rejected records to exception handling
Common Klaviyo data objects used in integrations
| Object | Typical Use | Common target systems | Martini handling |
|---|---|---|---|
| Profiles | Customer and contact data, attributes, consent state, and profile properties used for audience and personalization workflows. | Salesforce, Shopify, Adobe Commerce, BigCommerce, Snowflake | Martini maps canonical identities, attributes, and consent fields, performs upserts or bulk operations, and applies duplicate and stale-data controls. |
| Events | Behavioral or transactional activity such as purchases, product views, cart activity, and custom business events. | Shopify, Adobe Commerce, BigCommerce, Segment, Snowflake | Martini normalizes event names, timestamps, profile identifiers, and properties, then submits validated payloads with deterministic deduplication. |
| Metrics | Definitions used to categorize and analyze Events and support reporting workflows. | Snowflake, reporting databases, internal analytics APIs | Martini retrieves metric definitions and related reporting data, maps versioned responses, and stores incremental results for analytics. |
| Campaigns | One-time marketing messages and campaign-level delivery configuration. | Snowflake, Salesforce, internal reporting systems | Martini reads campaign data through paginated APIs, applies reporting transformations, and handles revision-sensitive schemas. |
| Flows | Automated, event- or condition-driven customer journeys. | Snowflake, Salesforce, internal governance systems | Martini synchronizes flow metadata and reporting data, validates fields, and routes selected information to downstream systems. |
| Lists | Groups of Profiles used for subscription management, segmentation, and campaign targeting. | Salesforce, Shopify, internal consent platforms | Martini maps membership and consent-related changes, applies explicit subscription rules, and processes additions or removals safely. |
Authentication and security considerations
Scoped credentials and secure configuration
Klaviyo supports private API keys for many server-to-server integrations and OAuth 2.0 for applications connecting to customer-managed accounts. Credentials are scoped to required resources and permissions.
- Store private API keys, OAuth client secrets, access tokens, refresh tokens, and API revision values in Martini secrets or secure environment configuration.
- Do not embed credentials in workflow mappings, source code, logs, or API responses.
- Use separate read-only reporting credentials and write-capable credentials where practical.
- Protect webhook endpoints with the validation and security controls required by the Klaviyo webhook implementation.
Consent and identity
Map email and SMS consent explicitly. A general Profile update should not be treated as permission to send marketing communications. Define the canonical strategy for email, phone, and Klaviyo profile identifiers before implementing upserts or merges.
Operational considerations for Klaviyo integrations
Versioning, limits, and pagination
Every Klaviyo REST integration should manage the required revision header as environment configuration. Test schema changes before changing revisions. Collection responses are paginated, and rate limits vary by endpoint and account or plan context.
- Follow documented pagination links or cursors rather than assuming one response contains all data.
- Handle HTTP 429 responses with bounded, Retry-After-aware backoff.
- Track asynchronous bulk and import job IDs through completion and capture item-level failures.
- Use stable event identifiers and idempotency controls for retries and duplicate webhook delivery.
- Use scheduled reconciliation where webhook coverage is incomplete.
- Test payload sizes for commerce Events containing large product or line-item structures.
- Monitor authentication failures, schema changes, rejected records, and checkpoint progress.
Why use Martini instead of scripts or point-to-point integrations?
Centralized integration logic
Martini provides a maintainable place to orchestrate Klaviyo API calls, webhook processing, transformations, business rules, and delivery to multiple enterprise systems. This avoids duplicating authentication, pagination, retry, consent, and error logic across point-to-point scripts.
- Build reusable workflows for Profiles, Events, Lists, reporting, and reconciliation.
- Expose controlled Martini APIs instead of giving every consumer direct Klaviyo credentials.
- Keep mappings, API revisions, secrets, and environment configuration separate from business logic.
- Handle rate limits, asynchronous jobs, duplicate notifications, and partial failures consistently.
- Use workflow logs and operational monitoring to support troubleshooting and replay.
Frequently asked questions
Klaviyo can be integrated through its versioned REST APIs, selected webhook notifications, bulk profile operations, asynchronous profile import jobs, reporting APIs, private API keys, and OAuth 2.0. Enterprise workflows commonly synchronize Profiles and Lists, send Events from commerce systems, receive supported notifications, and export campaign or reporting data.
Yes. Martini can integrate with Klaviyo by consuming Klaviyo REST APIs, receiving supported webhook notifications, orchestrating bulk and reporting workflows, and exposing Martini APIs for internal applications. A Martini-native Klaviyo connector is not documented in the supplied sources.
No. A dedicated Klaviyo connector is not required. Martini can use Klaviyo’s confirmed REST APIs, selected webhooks, bulk and import operations, reporting endpoints, and private API key or OAuth 2.0 authentication mechanisms.
Lonti does not charge an additional per-connector or per-vendor fee to integrate Klaviyo. The integration is subject to the provisioned capacity of the Martini environment. Separate costs may apply from Klaviyo, infrastructure providers, or other third-party systems depending on subscriptions, usage, and deployment model.
The Klaviyo versioned REST API should be the primary method for Profiles, Events, Metrics, Campaigns, Flows, Lists, Segments, and reporting. Use selected webhooks for supported notification topics, bulk or import APIs for large profile operations, and OAuth 2.0 when an application connects to multiple Klaviyo accounts on behalf of users.
Klaviyo supports webhook subscriptions for selected notification topics, so Martini can expose an API endpoint or webhook workflow to receive them. Coverage is not universal; implementations should verify supported topics and use REST API reconciliation where complete synchronization is required.
Martini can run scheduled or event-driven workflows that retrieve paginated Klaviyo resources, validate payloads, map them to canonical models, apply consent and identity rules, and write them to target systems. Watermarks, cursors, stable identifiers, and reconciliation workflows support incremental synchronization.
Separate authentication, permission, validation, rate-limit, transient server, and asynchronous job failures. Retry transient failures with bounded backoff and honor rate-limit guidance, while routing validation and permission failures for correction. Use deterministic source event keys or object identifiers to make processing idempotent.
Related Martini documentation
Klaviyo APIs
Plan your Klaviyo integration with Martini
Use Martini to connect Klaviyo APIs and selected webhook notifications with CRM, commerce, support, and analytics systems through governed workflows, secure configuration, reusable mappings, and reliable synchronization.