Make your AI work with TaxJar
Connect your account once and let the AI you already use work with it, without building another integration or switching to a different AI. Automate sales tax calculations and nexus compliance for your e-commerce store.
10 live capabilities. One account. Your AI. Real work.
- Step 01
Connect
Link your account through Vinkius.
- Step 02
Authorize
You decide what your AI can access.
- Step 03
Pick your AI
Use it with the AI application you already use.
- Step 04
Get things done
Ask your AI to work with your connected account.
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Works with
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Waiting for input…
Why people use TaxJar
Fix Sales Tax Errors with TaxJar Nexus Verification
This Connector changes that by bringing the data to you. Instead of hunting for info, you just ask your AI client to run the numbers. It pulls the exact rates and nexus status directly from TaxJar, giving you a clear picture of your tax liability without a single extra click.
What Vinkius changes
You get real-time tax data and compliance checks inside your AI chat.
Use it from Claude, ChatGPT, Cursor or another AI client you already have.
One account · 7,800+ Connectors
- Real-world use case 01
Testing Checkout Logic
A developer wants to see if their new checkout flow handles taxes correctly.
- Real-world use case 02
Nexus Audit
A compliance officer needs to know if they've crossed the threshold in a new state.
- Real-world use case 03
Refund Reconciliation
A finance person needs to match refunds to orders.
Complete set · 10capabilities
The complete TaxJar capability set.
These are the exact actions your AI can choose when you ask it to work with TaxJar.
01—04
4 capabilities in this set.
Part of 10 available through TaxJar.
- 01 Capability
List tax orders
Lists previously recorded order transactions in TaxJar. Use this to pull a history of past sales.
- 02 Capability
Get tax rates
Retrieves sales tax rates for a specific ZIP code. This gives you the exact rate for a local area.
- 03 Capability
Calculate sales tax
Calculates the exact sales tax for a specific order. This provides the final tax amount for a checkout.
- 04 Capability
Get summary tax rates
Retrieves minimum and average tax rates by region. Use this to see broader tax trends.
05—07
3 capabilities in this set.
Part of 10 available through TaxJar.
- 05 Capability
Get tax categories
Lists product tax categories from TaxJar. This helps you understand how different goods are taxed.
- 06 Capability
Get tax order details
Retrieves details for a specific order transaction. Use this to see the specifics of a single past sale.
- 07 Capability
List tax customers
Lists TaxJar customer records and exemptions. Use this to see which customers aren't being charged tax.
08—10
3 capabilities in this set.
Part of 10 available through TaxJar.
- 08 Capability
List nexus regions
Lists regions where the business has tax nexus. This shows you exactly where you're required to collect tax.
- 09 Capability
List tax refunds
Lists previously recorded refund transactions. This helps you track all money returned to customers.
- 10 Capability
Validate tax address
Validates a physical address for tax purposes. Use this to pre-qualify shipping locations.
Where the request belongs
Work TaxJar can move forward.
This is for commerce leads and developers who need to automate tax logic without building custom integrations. It's for the person tired of manual spreadsheet updates for state-by-state tax rules.
Backend Commerce Engineer
Tests checkout endpoints and validates tax logic in the terminal.
Financial Operator
Audits transaction histories and refund logs to find discrepancies.
Risk & Compliance Analyst
Monitors nexus thresholds and manages customer tax exemptions.
Build the capability set
Add more capabilities.
Each Connector adds new actions and data without changing how you work.
Browse Connectors
US Sales Tax Calculator
Calculate precise US sales and use tax liabilities based on jurisdiction, sourcing rules, and item exemptions.
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Enable your AI agent to manage orders, SKUs, customers, and shipments via the Commerce Layer API.
Jumpseller
Manage products, orders, and customers via Jumpseller API.
Etsy
Manage your Etsy shop. audit listings, orders, and reviews via AI.
Order Time
Inventory and order management. manage items, customers, and sales orders via Order Time.
Flexport
Manage global freight shipments, purchase orders, and logistics documents via AI agents with Flexport.
Bring your own AI
Change the model, client or framework. Keep TaxJar connected.
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Claude -
ChatGPT -
Gemini -
Cursor -
VS Code -
Windsurf -
ZCode -
Cline -
Zed -
Continue -
Kiro -
Roo Code -
Zencoder -
Goose -
Void -
Augment Code -
Amp -
Qodo -
Tabnine -
Pieces -
Sourcegraph Cody -
JetBrains -
Warp -
Amazon Q -
Antigravity -
BoltAI -
Raycast -
Jan -
LM Studio -
AnythingLLM -
Open WebUI -
Msty -
Cherry Studio -
LibreChat -
TypingMind -
Chorus -
5ire -
n8n -
LangChain -
LlamaIndex -
CrewAI -
Vercel AI SDK
Before you connect
Questions about TaxJar.
The practical details behind the request, access and result.
Can the TaxJar MCP calculate sales tax for multiple items?
Yes, it can calculate the exact sales tax for specific orders, including multi-item payloads, by processing the details you provide to your AI client.
How does TaxJar MCP help with tax nexus?
It allows you to instantly query your registered nexus regions. You can quickly see where your business is legally required to collect tax without opening a browser.
Can I use TaxJar MCP to check customer exemptions?
Yes, you can ask your agent to list customer records and exemptions. This helps you verify if a specific client is exempt from tax before finalizing an order.
Does TaxJar MCP support individual ZIP code lookups?
Yes, it can retrieve specific sales tax rates for any ZIP code. This is great for real-time price estimates during the checkout process.
How does TaxJar MCP help with refund tracking?
It allows your agent to pull a list of previously recorded refund transactions. This makes it much easier to reconcile your books and track returned funds.
Can TaxJar MCP validate shipping addresses for tax?
Yes, it can validate physical addresses for tax purposes. This ensures that the shipping data you receive is accurate for tax reporting and compliance.
Can it calculate tax for complex multi-item orders?
Yes. The calculate_sales_tax capability accepts full order payloads including multiple line items, shipping costs, and customer addresses to return precise tax breakdowns.
What are nexus regions?
A nexus is a state or jurisdiction where your business has a tax obligation. Use list_nexus_regions to see where you're registered to collect sales tax.
Does it support sandbox mode?
Yes. TaxJar provides sandbox API tokens for testing. Use a sandbox token to test tax calculations without affecting your live account or generating real transactions.
One connection away
Give your agent a direct line to TaxJar.
Connect TaxJar once. Keep it beside 7,800+ managed Connectors when the next task needs more.
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