Digits Write MCP for Safe Agentic Accounting
Digits' approach was to build the guardrails first: Locked Periods make closed books impossible to change silently, queueing every proposed edit for review
Tool Overview
Details, capabilities and usage guidance
Features
- ✓ Write, not just read: Digits says Write MCP lets customers' own AI agents create, update and delete records in the general ledger rather than only read from it, and describes it as a major update to its free MCP server
- ✓ Locked Periods protect closed books: Digits says once a period is locked, no one can change it silently, whether a person or an agent, and every proposed edit goes to a proposal and review queue where admins or managers approve or reject it before anything posts
- ✓ Open periods flow as usual: Digits says that if a period is open, changes apply automatically, and only changes that touch a locked period wait for review
- ✓ Permissions follow the signed-in user: Digits says agents act under the signed-in user's permissions, so they can only reach what that person can reach
- ✓ Free, across four core areas: Digits says Write MCP is free and connects directly to Claude, ChatGPT, Cursor and any MCP-compatible tool, with write tools focused on four key product areas - transactions, bills, invoices and the chart of accounts
How to Use
- Read Digits' official launch post to confirm how Write MCP and Locked Periods work, what they cover, and the free pricing
- Decide which periods to lock and who the admins or managers approving proposals will be, so the review process exists before agents start writing
- Connect the Digits MCP server in Claude, ChatGPT, Cursor or any MCP-compatible client and issue write instructions as shown in the official examples
- Try Digits' own example prompt - find every Stripe fee categorised as Software this quarter and move it to Merchant Fees - and confirm that anything touching a locked period lands in the review queue
FAQ
What is Digits Write MCP?
Digits says in its official blog post that Write MCP is a major update to its free MCP server that lets customers' own AI agents make changes in the general ledger, not just read from it, including creating, updating and deleting records. Digits says it is built on its new Locked Periods, so agents can do real accounting work while already-closed books stay protected.
Why are Locked Periods needed?
Digits says most accounting software protects closed periods with a warning popup or a shared password, and argues that a popup will not stop an agent and that once an agent has the password the protection is gone. Locked Periods instead route every proposed edit to a proposal and review queue when a period is locked.
What can an agent write?
Digits says it focused its write tools on four key product areas: transactions (recategorise, edit fields, fix split lines, write journal entries), bills (create, code and correct), invoices (draft, update and clean up) and the chart of accounts (add, rename and update accounts).
How are permissions controlled?
Digits says agents act under the signed-in user's permissions, so they can only reach what that person can, and any actions they take in locked periods require human review and approval. Digits also says admins and managers hold the power to lock and unlock periods and to approve proposed changes.
Which AI tools does it work with?
Digits says its MCP is free and connects directly to Claude, ChatGPT, Cursor and any MCP-compatible tool.
What results did Digits publish?
Digits' blog cites Arclow, an AI-native accounting practice: its staff accountant ran two clients' Q3 closes through Claude on the Digits MCP, and work that takes about seven hours by hand was done in an hour and forty minutes, roughly four times faster. Arclow founder and CEO Kangsan Wyi also mentions earlier forward-looking work such as a 13-week cash flow forecast and a full year budget built from GL data.