MCP / Finance

Taxjar MCP: financial workflows

TaxJar provides a comprehensive sales tax API for real-time tax calculations, reporting, and filing. Connect it to Claude, Codex, Cursor or any MCP client through one FlyMy.AI MCP.

Connect TaxjarWhat it can do
Your own API key18 actionsFinance

$ YOUR NEXT RUN

Claude CodeCodexCursorAny agent

Use Taxjar MCP in your assistant

Paste this prompt into Claude Code, Codex, Cursor or any agent. It reads the guide and helps you connect.

Read https://flymy.ai/skill.md and https://flymy.ai/mcp/taxjar.md. Help me connect Taxjar MCP to this assistant. Then help me run this task: Use Taxjar to calculate sales tax for an order. Ask me for the required inputs first and show the result.
Open FlyMy.AIDownload brief

What Taxjar MCP can do

18 actions in the FlyMy.AI catalog, the most used first. Your agent finds them through search_tools and calls the one the task needs.

ActionWhat it does
# TAXJAR_CALCULATE_SALES_TAX_FOR_AN_ORDERCalculate sales tax for an order.
# TAXJAR_CREATE_ORDER_TRANSACTIONCreate a new order transaction.
# TAXJAR_CREATE_REFUND_TRANSACTIONCreate a new refund transaction.
# TAXJAR_DELETE_CUSTOMERDelete an existing customer.
# TAXJAR_DELETE_ORDER_TRANSACTIONDelete an existing order transaction.
# TAXJAR_DELETE_REFUND_TRANSACTIONDelete an existing refund transaction.
# TAXJAR_LIST_CUSTOMERSList existing customers.
# TAXJAR_LIST_NEXUS_REGIONSList existing nexus regions for an account.
# TAXJAR_LIST_ORDER_TRANSACTIONSList existing order transactions.
# TAXJAR_LIST_REFUND_TRANSACTIONSList refund transactions.
# TAXJAR_LIST_TAX_CATEGORIESList all product tax categories and their codes.
# TAXJAR_SHOW_CUSTOMERShow an existing customer.
Show all 18 actions
ActionWhat it does
# TAXJAR_SHOW_ORDER_TRANSACTIONShow an existing order transaction by id.
# TAXJAR_SHOW_REFUND_TRANSACTIONShow a refund transaction.
# TAXJAR_SHOW_TAX_RATES_FOR_A_LOCATIONShow sales tax rates for a location.
# TAXJAR_SUMMARIZE_TAX_RATES_FOR_ALL_REGIONSRetrieve minimum and average sales tax rates by region.
# TAXJAR_UPDATE_ORDER_TRANSACTIONUpdate an existing order transaction.
# TAXJAR_VALIDATE_VAT_NUMBERValidate a vat number for tax-exempt status.

Ask your agent

Requests to paste as they are. Each one runs on the actions named under it.

“Use Taxjar to calculate sales tax for an order. Ask me for the required inputs first and show the result.”uses TAXJAR_CALCULATE_SALES_TAX_FOR_AN_ORDER
“Use Taxjar to create order transaction. Ask me for the required inputs first and show the result.”uses TAXJAR_CREATE_ORDER_TRANSACTION
“Use Taxjar to create refund transaction. Ask me for the required inputs first and show the result.”uses TAXJAR_CREATE_REFUND_TRANSACTION

Connect Taxjar in a minute

One MCP for every integration. Add it once, then every MCP in the catalog is a request away.

  1. 01

    Add FlyMy.AI

    Add the FlyMy.AI MCP to your assistant with one of the commands below and sign in. No key to copy.

  2. 02

    Add your TaxJar API Token

    Paste it into the Taxjar connection settings once; it stays with FlyMy.AI, never in a prompt or a chat.

    • TaxJar API Token - The API token generated from the TaxJar account, used for authenticating API requests. Get API key →
  3. 03

    Ask

    Paste a request from this page. Every run shows what it cost.

Claude Code
claude mcp add --transport http flymyai https://mcp-agents.flymy.ai/mcp

Then run /mcp in Claude Code and sign in.

Codex
codex mcp add flymy --url https://mcp-agents.flymy.ai/mcp

Then run codex mcp login flymy to sign in.

claude.ai and Claude Desktop
https://mcp-agents.flymy.ai/mcp

Settings, Connectors, Add custom connector: paste this URL.

Pay per run

FlyMy.AI bills the run: the model and the tool's seconds. Calls go to your own Taxjar account, under its plan and limits. No seats and no minimum.

See usage pricing →

Go to the source

Taxjar in the docs →Taxjar connection settings →Taxjar website →Every MCP in the catalog →Usage pricing →

From the FlyMy.AI platform catalog of 2026-11-03: name, description, actions and setup as the platform lists them. Examples are requests to paste, not recorded runs.