Taxy
Crypto and securities tax data: summaries, positions, lots, transactions; prepare wallet and CSV imports you confirm in Taxy.
Hosted MCP Server
npx add-mcp 'https://api.taxxy.eu/v1/mcp'Installs into Claude Code, Codex, Cursor and more
Documentation
What it can do
Free: prepare wallet imports and CSV imports. Taxy imports CSV and Excel (.xlsx) files in the app; through the assistant, use CSV (assistants can convert Excel to CSV). The assistant returns a link to a pre-filled wallet form, or to a CSV file it holds privately for up to 24 hours; nothing is imported until you check it and press Import in Taxy.
Pro: read your tax summary (calculate the report in Taxy first), positions, tax lots and transactions; point you to your tax report and forms (you calculate or download them in Taxy).
The connector can never change or delete your Taxy data.
MCP address
https://api.taxxy.eu/v1/mcp
Sign in with OAuth and approve access. Tools that use API keys can instead use a Pro API key from your Taxy account.
Claude.ai
- Open Settings → Connectors → Add custom connector.
- Name it “Taxy” and paste the MCP address above.
- Connect, sign in to Taxy and press Allow. Open Claude connectors
ChatGPT
Add a custom connector with the MCP address above, then sign in to Taxy and approve access. You may need a ChatGPT plan that supports custom connectors.
Cursor and VS Code
Open the matching app to install the connector, then connect and sign in when prompted.
Claude Code
claude mcp add --transport http taxy https://api.taxxy.eu/v1/mcp
Run the command, then use /mcp in Claude Code to sign in through OAuth.
Try asking
- “Import my Ethereum wallet 0x… into Taxy” — review and confirm the import in Taxy.
- “What's my 2025 tax summary in Taxy?” — Pro.
Your data and access
After you approve access, information returned to the assistant is handled by its provider under their terms. Remove the Taxy connector in your assistant's settings to disconnect; revoke API keys on the Taxy API Keys page.