ceven

Taxjar

Calculates sales tax for every order in real time, syncs transactions to your tax records, and validates VAT numbers to automate exemptions.

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Why use Ceven?

  1. AI native Taxjar integration

    • Describe the outcome and Ceven picks the right Taxjar calls, fills the parameters, and checks the result.
    • Structured, agent friendly tool schemas so each call runs reliably instead of by guesswork.
    • Rich coverage for reading, writing, and querying your Taxjar data, across all 21 of its actions.

  2. Managed auth

    • Built in OAuth with automatic token refresh and rotation.
    • One place to manage, scope, and revoke Taxjar access.
    • Per user and per environment credentials instead of shared keys.

  3. Agent optimized design

    • Actions are tuned from real success and error rates so reliability climbs over time.
    • Full execution logs so you always know what ran in Taxjar, when, and on whose behalf.
    • The agent pauses and asks when Taxjar is unclear instead of plowing ahead.

  4. Enterprise grade security

    • Fine grained access so you control which agents and people can reach Taxjar.
    • Least privilege by default, read scopes first and only the writes a workflow needs.
    • A full audit trail of every Taxjar action to support review and sign off.

Supported tools

Every action Ceven's agents can run on Taxjar, and when to use it.

Calculate sales tax
Use this when you need an accurate tax calculation including nexus addresses, line items, shipping, and exemptions.
Create order transaction
Push a finalized order into TaxJar for reporting and filing purposes after payment is confirmed.
Create refund transaction
Record a refund in TaxJar to reduce the tax liability for a specific order.
Delete customer
Remove a customer record by ID to maintain data privacy or clean up test entries.
Delete order transaction
Remove a specific order transaction by ID to correct a double entry or mistake.
Delete refund transaction
Remove a refund record by ID when a refund was issued in error.
List customers
Pull a list of all customers currently stored in TaxJar to verify account creation.
List nexus regions
Pull all regions where the account has a registered tax nexus to audit coverage.
List order transactions
Retrieve a list of order transactions for reporting or internal auditing.
List refund transactions
Retrieve all refund transactions processed through the API for a specific period.
List tax categories
Pull all available product tax categories and codes to map them to your SKU list.
Show customer
Retrieve the full details of a specific customer record using their unique ID.
Show order transaction
Pull full details for a specific order transaction to verify tax amounts.
Show refund transaction
Retrieve details for a specific refund transaction to check the original order link.
Show tax rates
Pull current sales tax rates for a specific zip code and address.
Validate VAT number
Check a VAT number for validity to confirm tax exempt status for business customers.
Calculate Sales Tax For An Order
Tool to calculate sales tax for an order. use when you need an accurate tax calculation including nexus addresses, line items, shipping, and exemptions.
Show Tax Rates for a Location
Tool to show sales tax rates for a location. use when you need to retrieve sales tax rates for a specific zip code with optional address details (city, state, country, street).
Summarize Tax Rates for All Regions
Tool to retrieve minimum and average sales tax rates by region. use when you need a backup of regional tax summary rates.
Update Order Transaction
Tool to update an existing order transaction. use when adjusting order details such as amount, shipping, or line items after creation.

20 actions · scroll to see them all

Frequently asked questions

Ceven uses the List Tax Categories action to identify the correct TaxJar product tax codes for your inventory. When a customer adds an item to their cart, the agent maps the internal SKU to the corresponding TaxJar category code. This ensures that a piece of clothing is taxed differently than a digital download or a professional service in jurisdictions where those distinctions exist. By automating this mapping, the agent prevents the common error of applying a flat tax rate to all products, which often leads to under payment of taxes in states with complex exemption rules for specific goods.
Yes. When a customer enters a VAT number during checkout, Ceven triggers the Validate VAT Number tool. The agent checks if the number is active and valid. If the validation is successful, the agent marks the order as exempt in your order management system and tells TaxJar to calculate zero tax for that transaction. If the number is invalid, the agent can trigger a notification to the customer asking for a corrected number or simply apply the standard tax rate, ensuring you never accidentally grant a tax exemption to an ineligible entity.
Ceven monitors for changes in your order source. If an order amount, shipping address, or the items in the cart change, the agent uses the Update Order Transaction action to sync those changes to TaxJar. This keeps your tax ledger in lockstep with your actual revenue. If the change is significant enough to alter the tax liability, the agent re runs the calculation and updates the record. This prevents discrepancies between what you collected from the customer and what you eventually report to the state during your filing period.
Ceven manages the data flow into TaxJar, but the actual filing is handled by TaxJar AutoFile. The agent ensures that every single transaction and refund is accurately recorded in TaxJar so that when the AutoFile window opens, the data is perfect. The agent can notify you when a filing period is approaching by pulling reports from TaxJar and alerting your finance team. While the agent does not sign the legal tax returns, it removes all the manual data entry and reconciliation work that typically precedes the filing process.
Yes. Users should be aware that TaxJar API rate limits vary based on your subscription tier. If you are running massive bulk imports of historical data, you might hit these limits. Ceven handles this by implementing a smart retry logic with exponential backoff, meaning the agent will pause and resume the sync automatically without failing the workflow. Additionally, some advanced tax calculation features, such as certain exemption certificate managements, are gated behind higher TaxJar plans. The agent will report an error if you attempt to call a feature that your current TaxJar account level does not support.
Ceven can be configured to periodically run the List Nexus Regions action. If you expand your business into a new state and register for a permit, you add that nexus in the TaxJar dashboard. The Ceven agent detects this change and can automatically update your checkout logic to start collecting tax in that new jurisdiction. This removes the need for a developer to manually update the tax logic in your code every time you hit a new economic nexus threshold, making your expansion into new markets a configuration task rather than a coding project.
Absolutely. You can ask Ceven to pull a list of all order transactions for a specific date range and compare them against your payment gateway records. The agent uses the List Order Transactions and Show Order Transaction tools to find gaps where an order was paid for but not recorded in TaxJar. It then generates a report of missing transactions and can even automatically create the missing records in TaxJar to bring your books into balance. This makes the end of year audit a matter of reviewing a report rather than hunting through spreadsheets.
Ceven transmits only the data necessary for tax calculation and reporting. When creating a customer or transaction, the agent sends the required fields like address, email, and order total. All data is transmitted over encrypted channels using the OAuth or API key credentials you provide. Ceven does not store your TaxJar secret keys in plain text; they are encrypted at rest. You can use the Delete Customer action via Ceven to remove sensitive data from TaxJar if a customer requests their data be deleted under GDPR or CCPA regulations.

Alternatives to Taxjar

Other tools that solve a similar problem. Ceven supports these too, so you can switch or run more than one at once.

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