TaxJar Connector for AI agents.
12 live capabilities
Automate sales tax calculations and nexus compliance for e-commerce.
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Why people use TaxJar
TaxJar for Automated Sales Tax Compliance
With this Connector, you just tell your agent to do it. You can ask for a tax calculation or a nexus check in one sentence. The agent talks to TaxJar for you, grabs the data, and gives you the answer instantly. You stop copy-pasting and start moving faster.
What Vinkius changes
You get instant tax compliance and calculation data without leaving your AI workspace.
Use it from Claude, ChatGPT, Cursor or another AI client you already have.
One account · 6,100+ Connectors
- Real-world use case 01
Checking a custom order
An e-commerce manager asks the agent to calculate tax for a $500 order to a specific ZIP code.
- Real-world use case 02
Nexus Audit
A finance lead asks the agent to list all regions where the company currently has a tax nexus.
- Real-world use case 03
Address Verification
A logistics lead asks the agent to validate a shipping address to see if it triggers a new tax rule.
Complete set · 12capabilities
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 12 available through TaxJar.
- 01 Capability
Calculate sales tax
Get the exact tax amount for a specific order based on destination and product. This helps you provide accurate totals to customers instantly.
- 02 Capability
Create tax order
Log a new sales transaction into TaxJar for your records. It keeps your transaction history updated automatically.
- 03 Capability
Create tax refund
Record a refund in your tax account to keep your reporting accurate. Use this to ensure your balance stays correct.
- 04 Capability
Delete tax order
Remove an order record from your tax history. Use this to clean up incorrect entries in your logs.
05—08
4 capabilities in this set.
Part of 12 available through TaxJar.
- 05 Capability
Get tax account
Check the current status of your TaxJar API connection. It lets you see if your account is linked correctly.
- 06 Capability
Get tax order
Pull the specific details of a past or current tax order. This is useful for looking up old transaction data.
- 07 Capability
Get tax rates
Find the current sales tax rate for any given ZIP code. It gives you the exact percentage for any location.
- 08 Capability
List tax categories
See your defined product types and tax codes. This helps you understand how your items are taxed.
09—12
4 capabilities in this set.
Part of 12 available through TaxJar.
- 09 Capability
List nexus regions
View all the states and regions where your business has a tax presence. It helps you stay compliant with state laws.
- 10 Capability
List tax orders
Get a full list of your previous sales tax transactions. You can use this to audit your historical data.
- 11 Capability
Update tax order
Modify an existing order record if details change. It lets you fix mistakes in your transaction history.
- 12 Capability
Validate tax address
Confirm a street address is valid for tax jurisdiction purposes. This ensures you apply the correct tax to the right place.
Set up in minutes
One URL. Then ask TaxJar to work.
Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use TaxJar from the conversation.
Choose your client
Live previewAdvanced clients IDE · CLI
Claude · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_mNsxhZV2SaoVAW9l9gMHUcDa3T6yifvMacWQa5IT/mcp - Step 01
Open Connectors
In Claude Web or Claude Desktop, open Settings and choose Connectors.
- Step 02
Add the URL
Choose Add custom connector, name it TaxJar, and paste the URL above.
- Step 03
Turn it on in chat
Select +, open Connectors, and enable TaxJar for the conversation.
ChatGPT · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_mNsxhZV2SaoVAW9l9gMHUcDa3T6yifvMacWQa5IT/mcp - Step 01
Open MCP settings
On desktop, open Settings and MCP servers. On web, open your workspace app or connector settings.
- Step 02
Add the URL
Choose Add server with Streamable HTTP, or create a custom MCP app, then paste the TaxJar URL.
- Step 03
Save and start
Save the connection and enable TaxJar in your conversation. Desktop may ask you to restart once.
Cursor · IDE configuration
Advanced setup
{
"mcpServers": {
"taxjar-alternative": {
"url": "https://edge.vinkius.com/vk_preview_mNsxhZV2SaoVAW9l9gMHUcDa3T6yifvMacWQa5IT/mcp"
}
}
}- Step 01
Open MCP Settings
Press Cmd+Shift+P (macOS) or Ctrl+Shift+P (Windows/Linux) → search "MCP Settings"
- Step 02
Add the server config
Paste the JSON configuration above into the mcp.json file that opens
- Step 03
Save the file
Cursor will automatically detect the new Connector
- Step 04
Start using TaxJar
Open Agent mode in chat and ask: "Using TaxJar, help me...". 12 tools available
VS Code Copilot · IDE configuration
Advanced setup
{
"mcpServers": {
"taxjar-alternative": {
"url": "https://edge.vinkius.com/vk_preview_mNsxhZV2SaoVAW9l9gMHUcDa3T6yifvMacWQa5IT/mcp"
}
}
}- Step 01
Create MCP config
Create a .vscode/mcp.json file in your project root
- Step 02
Add the server config
Paste the JSON configuration above
- Step 03
Enable Agent mode
Open GitHub Copilot Chat and switch to Agent mode using the dropdown
- Step 04
Start using TaxJar
Ask Copilot: "Using TaxJar, help me...". 12 tools available
Windsurf · IDE configuration
Advanced setup
{
"mcpServers": {
"taxjar-alternative": {
"url": "https://edge.vinkius.com/vk_preview_mNsxhZV2SaoVAW9l9gMHUcDa3T6yifvMacWQa5IT/mcp"
}
}
}- Step 01
Open MCP Settings
Go to Settings → MCP Configuration or press Cmd+Shift+P and search "MCP"
- Step 02
Add the server
Paste the JSON configuration above into mcp_config.json
- Step 03
Save and reload
Windsurf will detect the new server automatically
- Step 04
Start using TaxJar
Open Cascade and ask: "Using TaxJar, help me...". 12 tools available
Cline · IDE configuration
Advanced setup
{
"mcpServers": {
"taxjar-alternative": {
"url": "https://edge.vinkius.com/vk_preview_mNsxhZV2SaoVAW9l9gMHUcDa3T6yifvMacWQa5IT/mcp"
}
}
}- Step 01
Open Cline MCP Settings
Click the Connectors icon in the Cline sidebar panel
- Step 02
Add remote server
Click "Add Connector" and paste the configuration above
- Step 03
Enable the server
Toggle the server switch to ON
- Step 04
Start using TaxJar
Ask Cline: "Using TaxJar, help me...". 12 tools available
Claude Code · Terminal command
Advanced setup
claude mcp add taxjar-alternative --transport http "https://edge.vinkius.com/vk_preview_mNsxhZV2SaoVAW9l9gMHUcDa3T6yifvMacWQa5IT/mcp"- Step 01
Install Claude Code
Run npm install -g @anthropic-ai/claude-code if not already installed
- Step 02
Add the Connector
Run the command above in your terminal
- Step 03
Verify the connection
Run claude mcp to list connected servers, or type /mcp inside a session
- Step 04
Start using TaxJar
Ask Claude: "Using TaxJar, show me...". 12 tools are ready
Where the request belongs
Work TaxJar can move forward.
E-commerce owners and finance pros who are tired of manually calculating state taxes and worrying about nexus compliance.
E-commerce Manager
Checking tax rates for custom multi-state orders during a busy launch week.
Finance Accountant
Verifying total sales tax collected across different regions during month-end reporting.
Logistics Coordinator
Validating shipping addresses to ensure tax is applied to the correct jurisdiction before labels print.
Build the capability set
Add more capabilities.
Each Connector adds new actions and data without changing how you work.
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Calculate precise US sales and use tax liabilities based on jurisdiction, sourcing rules, and item exemptions.
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Bring automated tax compliance and invoicing directly into your AI workflow. calculate global taxes, issue invoices, and manage CRM contacts in seconds.
US State Tax Calculator
Calculate US state income tax rates and liabilities based on residency and taxable income.
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 -
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Cherry Studio -
LibreChat -
TypingMind -
Chorus -
5ire -
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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 taxes for multiple states?
Yes, it pulls real-time rates for any US destination. This ensures your customers are charged the correct amount regardless of where they live.
How does TaxJar MCP help with nexus?
It lets you list and monitor the specific regions where your business has a tax presence. This helps you stay on top of your state requirements without manual auditing.
Can I use TaxJar MCP to log refunds?
Yes, you can use it to record refunds so your tax history stays accurate. This keeps your balance correct and your reporting clean.
Does TaxJar MCP verify shipping addresses?
It validates street addresses to ensure you're applying tax to the correct jurisdiction. This prevents errors caused by incomplete or incorrect shipping data.
How do I connect my TaxJar account?
You just need your API token from your TaxJar settings to link it to your AI client. Once connected, your agent can access all your tax data.
Can I see my product tax categories?
Yes, it can list your categories and codes to help you verify exemptions. This is useful for ensuring your specific products are taxed correctly.
Can I calculate sales tax for a specific address via AI?
Yes! Use the calculate_sales_tax capability. Provide the destination country, zip code, and state along with the order amount. Your agent will return the precise tax to be collected.
How do I see in which states I have a tax nexus?
Run the list_nexus_regions query. The agent will retrieve a list of all regions (states or countries) where you have configured a tax nexus in your TaxJar account.
Is it possible to validate a shipping address via AI?
Absolutely. Use the validate_tax_address capability and provide the full address details. The agent will verify the address through TaxJar to ensure it is accurate for tax purposes.
One connection away
Give your agent a direct line to TaxJar.
Connect TaxJar once. Keep it beside 6,100+ managed Connectors when the next task needs more.
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