TaxJar
api.taxjar.com
US sales tax calculation, reporting, and filing API. Calculate tax rates, manage order and refund transactions, handle customers and nexus addresses, validate addresses and VAT numbers.
Enable this service
This service is in the catalog but not part of v1 launch billing. To use it, run the command below and provide your own API key in the local config page — the gateway will call it under your account.
api_key
free
1.0
https://api.taxjar.com
May 4, 2026
Health
This is a community-maintained manifest. Health monitoring is not available because this service doesn't host its own /.well-known/agent endpoint yet. Learn more about trust levels →
Top Capabilities
Most commonly used operations — ready to call without drill-down.
categories_list
GETList all product tax categories with tax codes.
GET https://api.taxjar.com/v2/categories
customers_list
GETList all customers.
GET https://api.taxjar.com/v2/customers
nexus_list
GETList nexus regions for the account.
GET https://api.taxjar.com/v2/nexus/regions
All Capabilities (22)
validations (2)
Validate a US address using USPS database.
Validate a VAT identification number (EU/UK/AU/etc.).
categories (1)
List all product tax categories with tax codes.
customers (5)
Create a new customer with exemption details.
Delete a customer.
Retrieve a customer by ID.
List all customers.
Update an existing customer.
nexus (1)
List nexus regions for the account.
orders (5)
Create a new order transaction for reporting.
Delete an order transaction.
Retrieve a specific order transaction by ID.
List existing order transactions.
Update an existing order transaction.
rates (1)
Get tax rates for a specific location by zip code.
refunds (5)
Create a refund transaction for reporting.
Delete a refund transaction.
Retrieve a specific refund transaction.
List existing refund transactions.
Update an existing refund transaction.
summary_rates (1)
Get summarized tax rates for all regions where you have nexus.
taxes (1)
Calculate sales tax for an order based on origin/destination and line items.
Agent Preview
This is what an AI agent sees when it discovers this service via the Gateway:
Service: TaxJar
Description: US sales tax calculation, reporting, and filing API. Calculate tax rates, manage order and refund transactions, handle customers and nexus addresses, validate addresses and VAT numbers.
Auth: api_key
Capabilities (22 total):
validations (2):
- addresses_validate: Validate a US address using USPS database.
- validations_validate: Validate a VAT identification number (EU/UK/AU/etc.).
categories (1):
- categories_list: List all product tax categories with tax codes.
customers (5):
- customers_create: Create a new customer with exemption details.
- customers_delete: Delete a customer.
- customers_get: Retrieve a customer by ID.
- customers_list: List all customers.
- customers_update: Update an existing customer.
nexus (1):
- nexus_list: List nexus regions for the account.
orders (5):
- orders_create: Create a new order transaction for reporting.
- orders_delete: Delete an order transaction.
- orders_get: Retrieve a specific order transaction by ID.
- orders_list: List existing order transactions.
- orders_update: Update an existing order transaction.
rates (1):
- rates_get: Get tax rates for a specific location by zip code.
refunds (5):
- refunds_create: Create a refund transaction for reporting.
- refunds_delete: Delete a refund transaction.
- refunds_get: Retrieve a specific refund transaction.
- refunds_list: List existing refund transactions.
- refunds_update: Update an existing refund transaction.
summary_rates (1):
- summary_rates_list: Get summarized tax rates for all regions where you have nexus.
taxes (1):
- taxes_calculate: Calculate sales tax for an order based on origin/destination and line items.
Top capabilities (ready to call):
- categories_list: GET /v2/categories
- customers_list: GET /v2/customers
- nexus_list: GET /v2/nexus/regions