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Klaviyo to Microsoft SQL Server integration

Connect Klaviyo to Microsoft SQL Server and automatically sync your marketing platform data. Weld extracts Lists, Profiles, Campaigns, and Flows from Klaviyo, loads them into Microsoft SQL Server, and lets you transform the data using SQL or dbt, no custom scripts required.

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4.8 on G2
KlaviyoSource
WeldWeld
Microsoft SQL ServerWarehouse
Weld · New sync
KlaviyoSourceKlaviyoConnected
Tables to sync
  • event13 cols
  • profile38 cols
  • segment_profile3 cols
  • list_profile2 cols
  • campaign21 cols
  • metric9 cols
  • Extract
  • Load
  • Keep in sync
Microsoft SQL ServerDestinationMicrosoft SQL ServerReady
klaviyo schema
  • klaviyo.eventSynced
  • klaviyo.profileSyncing
  • klaviyo.segment_profileSynced
  • klaviyo.list_profileSynced
  • klaviyo.campaignSynced
  • klaviyo.metricSynced
Klaviyo tables
13
fields, typed
122
relationships kept
8
agent context included
MCP

Trusted by data and AI teams

  • Flatpay
  • Holafly
  • eComplete
  • Dishoom
  • Danish Endurance
  • Female Invest
  • Son of a Tailor
  • Onomondo
  • Medik8
  • Pas Normal Studios
How it works

How to set up Klaviyo to Microsoft SQL Server in Weld.
In the app, with the API or an agent.

Setup guideAPI guideMCP docs
Weld · New Klaviyo sync
KlaviyoNew connectionKlaviyoAuthorised
Connection nameklaviyo
AuthorizeOpens Klaviyo to grant read access
Use cases

Why sync Klaviyo to Microsoft SQL Server?
Ready for analysis.

Centralizing your Klaviyo data in Microsoft SQL Server lets you join it with other data sources for cross-platform analytics and deeper insights.

Build reliable dashboards and reports by querying Klaviyo data directly in Microsoft SQL Server using SQL or your preferred BI tool.

  • Centralized data warehouse

    Bring Klaviyo data into Microsoft SQL Server alongside other sources to create a single source of truth for your organization.

  • Automated reporting

    Replace manual exports and spreadsheet-based reporting with automated pipelines from Klaviyo to Microsoft SQL Server. Connect BI tools like Looker, Metabase, or Power BI.

Schema

What data can you sync?
Every Klaviyo table, keys intact.

Weld syncs the following data objects from Klaviyo into Microsoft SQL Server. The exact tables and fields depend on your Klaviyo configuration and the permissions granted during setup.

Open the schema explorer
All 13 tables
  • event
  • profile
  • segment_profile
  • list_profile
  • campaign
  • metric
  • segment
  • flow
  • list
  • email_template
  • campaign_audiences_included
  • campaign_audiences_excluded
  • profile_predictive_analytics_ranked_channel_affinity
Weld MCP server

Ask your agent.
It queries Microsoft SQL Server for you.

Connect Claude, Cursor, ChatGPT or your own agent to Weld over MCP. It reads the Klaviyo context, finds the tables it needs and runs the query in Microsoft SQL Server.

Set up the MCP serverClaudeCursorChatGPTGemini
Claude CodeOpus 5
>

How many event rows do we have per profile? Use our Klaviyo data in Microsoft SQL Server.

Reading the Klaviyo context first, so the query uses the right tables and keys.

●weld·search_available_references
⎿raw.klaviyo.event
raw.klaviyo.profile
+ 11 more Klaviyo tables
●weld·get_reference_schema
⎿event · 13 columns
joins profile on profile_id
●weld·run_query
⎿select p.id, count(*) from {{raw.klaviyo.event}} e
join {{raw.klaviyo.profile}} p on e.profile_id = p.id
group by 1
submitted
●weld·get_query_status
⎿DONE
●weld·get_query_result
⎿rows returned
✓Answered from Klaviyo data in Microsoft SQL Server
>Ask about your Klaviyo data
Under the hood

Technical considerations.
What to expect.

Reverse ETL

ELT vs. reverse ETL: Klaviyo and Microsoft SQL Server

ELT (Extract, Load, Transform) moves data from Klaviyo into Microsoft SQL Server for analysis. This is the approach shown on this page, and the one to use for dashboards, reports, and data models.

Reverse ETL works the other direction: it pushes enriched data from Microsoft SQL Server back into Klaviyo. For example, you could sync computed lead scores or customer segments from your warehouse into Klaviyo to personalize outreach.

Weld supports both directions, so you can build a complete data loop between Klaviyo and Microsoft SQL Server.

Microsoft SQL Server to Klaviyo
Incremental syncing
Weld uses incremental syncing where supported by the Klaviyo API, loading only new and updated records to minimize data transfer and warehouse costs.
Schema handling
Weld automatically manages schema changes. If Klaviyo adds new fields, they're detected and added to the corresponding Microsoft SQL Server tables.
Data freshness
Sync frequency depends on your Weld plan. Most connectors support schedules from every 5 minutes up to daily intervals.
Security
All data is encrypted in transit (TLS) and at rest. Weld is SOC 2 Type II compliant and supports IP whitelisting for database connections.
Resources

Keep reading.
Guides, docs and schema.

Documentation

Klaviyo setup guide

How to connect Klaviyo to Weld, step by step.

Documentation

Microsoft SQL Server setup guide

How to connect Microsoft SQL Server to Weld, step by step.

Schema

Klaviyo schema explorer

Browse all 13 tables and 122 fields.

Connector

Klaviyo connector

Everything Weld does with Klaviyo.

FAQ

Common questions.
About Klaviyo to Microsoft SQL Server.

Start syncing Klaviyo to Microsoft SQL Server.

Set up your Klaviyo data pipeline in minutes. No credit card required. Free for 14 days.

KlaviyoSource
WeldWeld
Microsoft SQL ServerWarehouse
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Related

Related integrations.
More with Klaviyo and Microsoft SQL Server.

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