Tally & Integration

How to connect Tally with Claude AI: a step-by-step guide for Indian business owners

Updated 30 August 20268 min readnaffo.tech integration deskReviewed by naffo.tech Claude integration team

How do I connect Tally with Claude AI?

Tally does not have a native Claude plugin, so the connection goes through a bridge: install an MCP-enabled cloud ERP (like naffo.tech) that syncs with Tally via the Tally Connector, then add the ERP's MCP server to Claude Code or claude.ai. Claude can then create invoices, check stock, run GST summaries and follow up overdue customers — all of which sync back to Tally automatically. Direct Tally-to-Claude without a bridge is technically possible but requires custom TDL and HTTP work.

Key takeaways

The fastest path to Claude + Tally is: cloud ERP (naffo.tech) → Tally Connector → sync. Claude talks to the ERP, the ERP posts to Tally.
The Tally Connector runs as a local Windows service on the PC where Tally is installed. It requires no Tally customisation.
MCP (Model Context Protocol) is the open standard that lets Claude call tools in external systems — it is how Claude reads your ledgers and creates vouchers.
Money-moving actions (payments, fund transfers) always require explicit confirmation before Claude posts them. No silent financial writes.
All operations go through your account's role permissions — Claude cannot do anything your user role would not allow in the UI.
Once connected, you can ask Claude business questions in plain language: 'Who owes me more than ₹50,000?', 'What is today's sales total?', 'Which bills are unpaid this month?'

Key figures

< 30 minutes: Setup time from zero to first Claude query on your Tally dataBasis: Installing naffo.tech, connecting the Tally Connector, and adding the MCP server to Claude Code — tested with a fresh Tally Prime 3.0 installation.
40+: Business operations Claude can perform once connectedBasis: Sales invoices, purchase bills, payments, receipts, stock checks, GST summaries, overdue follow-ups, bank reconciliation prompts, dairy procurement — full list at naffo.tech/claude.

Why Tally does not connect to Claude directly

Tally's HTTP Server speaks an XML-based protocol that predates the current generation of AI tools. Claude expects MCP — a JSON-based protocol where tools are declared with clear input schemas, and where every call returns structured data that the model can reason about. The gap between Tally's XML API and MCP's expectations is solvable with a bridge layer, and that is exactly what naffo.tech's Tally Connector does.

The bridge does two things: it translates between Tally XML and clean REST + MCP calls, and it handles the business rules that Tally does not enforce — confirming money-moving operations, validating party and item master names before posting, and keeping an audit log of every AI-initiated write.

01Create your naffo.tech account
Go to naffo.tech, start a free trial, and create your organisation. Enter your GSTIN, financial year start date, and currency.
02Import your Tally masters
In naffo.tech Settings → Import, use the Tally import wizard to bring in your party (ledger) masters and stock item masters. This is the one-time alignment that ensures naffo.tech and Tally use the same names.
03Verify the master sync
Search for 3–5 party names in naffo.tech and confirm they match exactly as they appear in Tally. Name mismatches are the single biggest cause of sync failures later.

Step 2: Install the Tally Connector

01Download the connector
In naffo.tech Settings → Integrations → Tally Connector, download the Windows installer. It is a lightweight service (~5 MB) that runs in the system tray.
02Install on the Tally PC
Run the installer on the PC where Tally is installed. The connector runs as a Windows service and starts automatically on reboot.
03Pair the connector with your naffo.tech account
On first run, paste your naffo.tech organisation ID and connector token from Settings → Integrations. The connector authenticates with naffo.tech's cloud over HTTPS.
04Enable Tally HTTP Server
In Tally Prime, go to Help → Settings → Connectivity → TallyPrime Server and confirm the HTTP port is enabled (default 9000). The connector will verify this during setup.
05Run the first sync
In naffo.tech, go to Settings → Integrations → Tally → Sync Now. A summary shows how many vouchers were pushed to Tally and any errors.

Step 3: Add naffo.tech's MCP server to Claude

Once naffo.tech and Tally are syncing, the next step is connecting Claude to naffo.tech's MCP server. There are two paths.

Two ways to connect Claude to naffo.tech
Method	Best for	Setup steps
Claude Code plugin (recommended)	Developers and power users running Claude Code	1. Run `/plugin marketplace add naffotech/naffo-marketplace` in Claude Code. 2. Run `/plugin install naffo`. 3. Run `claude mcp add naffo` with the URL from Settings → Integrations → MCP.
claude.ai Custom Connector	Non-technical users on the claude.ai website	1. In claude.ai Settings → Connectors → Add custom connector. 2. Paste your MCP URL from naffo.tech Settings → Integrations → MCP. 3. Save and test.

Step 4: Try your first commands

Here are the commands that give the most immediate value to a business owner on day one. All of these read from or write to your naffo.tech data, which is already syncing to Tally.

"Show today's sales total and how many invoices were raised." — quick morning dashboard.
"Which customers owe me more than ₹50,000?" — outstanding receivables list.
"Create a sale invoice for Patel Traders — 20 units of Ghee at ₹520 each, paid by NEFT." — full GST invoice created in naffo.tech and synced to Tally.
"Show my GSTR-1 summary for July." — taxable value, CGST, SGST, IGST breakdown.
"Record a receipt of ₹75,000 from Mehta General Store against invoice INV-1042." — payment matching.
"What is the current stock of Raw Milk in litres?" — real-time inventory check.

What syncs to Tally and what does not

naffo.tech ↔ Tally sync: what goes where
Item	Direction	Notes
Sales invoices	naffo.tech → Tally	Posted as Sales Vouchers in Tally; GST ledgers updated automatically
Purchase invoices / bills	naffo.tech → Tally	Posted as Purchase Vouchers; vendor ledger updated
Receipts	naffo.tech → Tally	Posted as Receipt Vouchers; reduces outstanding in Tally
Payments	naffo.tech → Tally	Posted as Payment Vouchers; updates vendor outstanding
Party masters	Tally → naffo.tech (import)	One-time import during setup; ongoing adds in naffo.tech
Stock item masters	Tally → naffo.tech (import)	One-time import; stock quantities sync both ways
TDL custom fields	Not synced	Custom TDL fields in Tally do not have equivalents in naffo.tech
Tally payroll	Not synced	Payroll stays in Tally; naffo.tech has its own employee module

Safety model: how Claude is prevented from making mistakes

The most common concern we hear is: 'What if Claude posts something wrong to Tally?' The safety model has three layers.

Confirmation gates for money movement. Every write that moves money — payments, receipts, fund transfers — requires you to say 'yes' before Claude posts it. Claude will show you the full details and ask for confirmation. If you type 'cancel' or close the conversation, nothing is posted.
Role permissions. Claude can only do what your naffo.tech user role allows. If your account does not have permission to delete vouchers, Claude cannot delete vouchers.
Audit trail. Every AI-initiated write is logged in naffo.tech's audit log with the timestamp, the user, the MCP tool called, and the input parameters. You can see exactly what Claude wrote and when.

Troubleshooting: the five most common connection issues

Common issues and fixes
Issue	Likely cause	Fix
Tally Connector shows 'Disconnected'	Tally HTTP Server is not enabled	In Tally: Help → Settings → Connectivity → TallyPrime Server → Enable. Confirm port 9000 is open in Windows Firewall.
Sync fails with 'Ledger not found'	Party name mismatch between naffo.tech and Tally	Check the exact spelling in both systems. They must match character-for-character.
Claude says 'No data found' for a query	MCP connector not authenticated	Run `claude mcp list` and confirm the naffo server appears. Re-add if missing.
Vouchers not appearing in Tally after sync	Tally is in audit mode or vouchers are unaccepted	In Tally, go to the voucher list and accept the synced vouchers if auditing is enabled.
Claude creates a duplicate invoice	Same conversation message sent twice	Check naffo.tech for duplicates. The idempotency key in the MCP call prevents server-side duplicates; client-side doubles are a UI issue in your Claude session.

Connect Tally with Claude AI via naffo.tech MCP

01Create naffo.tech account and import Tally masters
Sign up at naffo.tech, create your organisation, and use the Tally import wizard to bring in party and stock item masters.
02Install the Tally Connector on your Tally PC
Download and install the Windows connector from naffo.tech Settings → Integrations → Tally Connector. Pair it with your organisation ID and token.
03Enable Tally HTTP Server
In Tally Prime, enable the HTTP Server under Help → Settings → Connectivity. Confirm port 9000 is accessible.
04Run the first sync and verify
In naffo.tech Settings → Integrations, run a sync and confirm vouchers appear in Tally.
05Add naffo.tech MCP to Claude Code or claude.ai
Follow the plugin install steps at naffo.tech/claude. Verify by asking Claude 'Who am I in naffo?'.
06Test with a read query and a write query
Ask Claude for today's sales total (read), then create a test invoice (write, with confirmation). Verify the invoice appears in Tally.

Frequently asked questions

Does this work with Tally ERP 9 or only Tally Prime?

The Tally Connector supports both Tally ERP 9 and Tally Prime. However, Tally Prime's built-in HTTP Server makes the connection more reliable. On Tally ERP 9, the connector uses Tally's older XML interface over the same port. If you are on Tally ERP 9, upgrade to Tally Prime if possible — it resolves most connectivity edge cases.

Can Claude read my Tally data without posting anything?

Yes. Read-only queries — stock balances, outstanding receivables, GSTR summaries, trial balance — never post to Tally. Claude reads from naffo.tech's database, which is synced from Tally, but a read query does not touch Tally at all.

What happens if the Tally Connector PC is turned off?

naffo.tech continues operating normally as a cloud ERP. All transactions are saved in naffo.tech's database. When the Tally Connector PC comes back online, the connector catches up and pushes all pending vouchers to Tally. There is no data loss.

Is naffo.tech required, or can I connect Claude directly to Tally?

You can write a custom MCP server that talks directly to Tally's HTTP Server — the Tally API is documented. However, this requires significant development work, Tally-specific XML handling, and your own safety and audit infrastructure. naffo.tech's Tally Connector is the production-ready version of that work, tested across thousands of transactions.

Does Claude store my Tally data?

Claude (Anthropic's model) does not permanently store your business data. The MCP tool calls send specific requests to naffo.tech's server, which returns the relevant data for that conversation. Your financial data lives in naffo.tech and Tally, not in Anthropic's systems.

How much does this cost?

The naffo.tech Tally Connector is included in all naffo.tech plans. Claude Code requires a Claude Pro or Max subscription or an Anthropic API key. The claude.ai Custom Connector requires a paid claude.ai plan. There is no separate charge from naffo.tech for MCP access.

This page also answers

Can Claude AI access Tally?
How to use Claude with Tally Prime?
Tally MCP integration setup
Claude AI accounting India
AI agent for Tally ERP
How to ask Claude about my business finances
Claude Code ERP plugin India
Connect Tally to AI assistant

References

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