Actual Budget MCP Server

actual-budget-mcp

Talk to your budget. An MCP server that connects Actual Budget to Claude. Ask where the money went, get real analysis back, and let it write without holding your breath.

Listed in the official Actual Budget community projects.

Features

• Real analysis, not just lookups - Projections, category trends, budget vs actual, and month summaries
• Writes you can trust - Every delete previews what it will remove and waits for you to confirm; ACTUAL_READ_ONLY=1 hides the write tools from the model entirely (Safety)
• Multi-currency that survives reality - Splits and residual reconciliation, not just a currency symbol
• Recovers from an out-of-sync budget - repair_sync rebuilds the local sync state when @actual-app/api and your server disagree, the failure that otherwise leaves every tool erroring
• Ask about your budget in plain language - "How much did I spend on food this month?" or "Am I over budget on anything?"
• Create and manage transactions - Add expenses, transfers, and edits without opening the app
• Manage categories, payees, and rules - Full CRUD without opening the app
• Use names, not IDs - Say "Cartera" instead of a1b2c3d4-..., with helpful suggestions if ambiguous
• Natural dates in English and Spanish - "last month", "este mes", "hace 3 meses", "yesterday"
• Clean formatted output - Aligned tables and clear summaries, not raw JSON
• Clear error messages - If something's wrong, you'll know exactly what to fix

Does it work with local models?

Yes. This is an MCP server, so it works with any client that speaks MCP, and the model behind that client is the client's business, not this server's. Claude Desktop, Claude Code, Cursor and VS Code are the ones documented below because they are the ones people ask about, but anything that can run an MCP client, including a local setup pointed at Ollama or LM Studio, talks to it the same way.

Your budget data goes to whatever model your client uses. If that matters to you, and for a lot of people running Actual it does, a local model keeps it on your machine.

Does it work with ChatGPT?

No, and the reason is not this server. ChatGPT's connectors only accept remote MCP servers: a public HTTPS endpoint speaking SSE or Streamable HTTP. There is no way to point ChatGPT at a process running on your own machine, which is what this server is. OpenAI does offer a tunnel for local servers, but it is limited to enterprise plans.

Making it work would mean exposing your Actual server to the internet, which is the opposite of what most people running Actual want. Anything that can start a local MCP process works instead: Claude Desktop, Claude Code, Cursor, VS Code, Gemini CLI, or your own setup pointed at a local model.

If what you actually want is OpenAI's model, use Codex, which does run MCP servers locally over stdio. Option 6 is the one command it takes.

Prerequisites

• Actual Budget server running (local or remote)
• Node.js 22 or higher for every option below except the Desktop Extension (see Node.js requirement)
• The Desktop Extension needs nothing but Claude Desktop. It runs on the Node that Claude Desktop ships, and the bundle carries a prebuilt SQLite binary for every Node version it supports, so nothing is compiled either. Checked on Windows 11 with Claude Desktop 2.110.0 and Node removed from the machine.

Quick Start

On Claude Desktop, the shortest path is the extension: no config file to edit and no command to run. Otherwise, copy this into Claude Code or Claude Desktop:

Install the actual-budget-mcp MCP server from npm (https://github.com/henfrydls/actual-budget-mcp).
Configure it with these credentials:
    - My Actual Budget server: http://localhost:5006
    - Password: YOUR_PASSWORD
    - Budget ID: YOUR_BUDGET_ID

Claude will configure everything for you.

Installation

Option 1: Claude Desktop extension (no config files)

A packaged Desktop Extension is available: install it and Claude Desktop asks for your server URL, password and Sync ID in its own settings UI, with the password and session token stored in your operating system's keychain rather than a config file you have to edit.

Download actual-budget-mcp.mcpb, then open Claude Desktop, go to Settings > Extensions, and drag the file onto that screen.

On Windows, dragging is the way in: double-clicking the file opens Windows' "select an app to open this file" dialogue instead, because Claude Desktop does not register the .mcpb file type. Verified on a clean Windows 11 install with Claude Desktop 0.14.10.

The extension carries everything it needs, so the first question you ask is answered straight away rather than after an install you cannot see. It is a large download, once, with a progress bar.

You do not need Node.js installed for this route. Claude Desktop runs the extension on the Node it ships with. Checked by renaming Node out of the way on a Windows 11 machine and asking a question anyway: the server started and answered.

Earlier builds launched the package from npm instead. That made the download small and moved it to the first run, where nothing showed progress: Claude Desktop waited, decided the server was dead and said it could not connect, and the extension started working on its own a few minutes later. The bundle now includes Actual's SQLite binary for every platform and Node version it supports, and picks the right one when it starts.

Updating the extension

Installing a new version over an old one keeps the settings you filled in, with one exception seen in practice: the saved server password was cleared when a field's title changed between versions. If Claude cannot connect after an update, open the extension's settings and check the password field before looking anywhere else.

Option 2: Claude Code (one command)

claude mcp add actual-budget-mcp -e ACTUAL_SERVER_URL=http://localhost:5006 -e ACTUAL_PASSWORD=your-password -e ACTUAL_BUDGET_ID=your-budget-id -- npx -y actual-budget-mcp

Option 3: Claude Desktop (edit the config file)

Add this to your claude_desktop_config.json:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "actual-budget-mcp": {
      "command": "npx",
      "args": ["-y", "actual-budget-mcp"],
      "env": {
        "ACTUAL_SERVER_URL": "http://localhost:5006",
        "ACTUAL_PASSWORD": "your-password",
        "ACTUAL_BUDGET_ID": "your-budget-sync-id"
      }
    }
  }
}

Option 4: Cursor

The button installs it with placeholder values. Open Cursor Settings > MCP afterwards and replace the three: your server URL, your password, and your budget's Sync ID. To do it all by hand instead, go to Cursor Settings > MCP > Add new MCP server and add:

{
  "mcpServers": {
    "actual-budget-mcp": {
      "command": "npx",
      "args": ["-y", "actual-budget-mcp"],
      "env": {
        "ACTUAL_SERVER_URL": "http://localhost:5006",
        "ACTUAL_PASSWORD": "your-password",
        "ACTUAL_BUDGET_ID": "your-budget-sync-id"
      }
    }
  }
}

Option 5: VS Code (GitHub Copilot)

Same as above: the button fills in placeholders, and you replace the three values afterwards. By hand, add this to your VS Code settings.json:

{
  "mcp": {
    "servers": {
      "actual-budget-mcp": {
        "command": "npx",
        "args": ["-y", "actual-budget-mcp"],
        "env": {
          "ACTUAL_SERVER_URL": "http://localhost:5006",
          "ACTUAL_PASSWORD": "your-password",
          "ACTUAL_BUDGET_ID": "your-budget-sync-id"
        }
      }
    }
  }
}

Option 6: Codex (OpenAI)

One command, and it writes the entry into ~/.codex/config.toml for you:

codex mcp add actual-budget-mcp \
  --env ACTUAL_SERVER_URL=http://localhost:5006 \
  --env ACTUAL_PASSWORD=your-password \
  --env ACTUAL_BUDGET_ID=your-budget-sync-id \
  -- npx -y actual-budget-mcp

Codex has no extension or bundle format, so this one-liner is the shortest route there is. codex mcp list shows it afterwards, and codex mcp remove actual-budget-mcp undoes it.

This is Codex the local agent, the CLI and the IDE extension. Codex in the browser runs on OpenAI's machines and cannot reach an Actual server on your network.

Option 7: Docker

The image speaks stdio like every other option, so your client starts the container and owns its lifetime:

{
  "mcpServers": {
    "actual-budget-mcp": {
      "command": "docker",
      "args": [
        "run", "-i", "--rm",
        "--add-host=host.docker.internal:host-gateway",
        "-v", "actual-budget-mcp-data:/data",
        "-e", "ACTUAL_SERVER_URL",
        "-e", "ACTUAL_PASSWORD",
        "-e", "ACTUAL_BUDGET_ID",
        "ghcr.io/henfrydls/actual-budget-mcp:latest"
      ],
      "env": {
        "ACTUAL_SERVER_URL": "http://host.docker.internal:5006",
        "ACTUAL_PASSWORD": "your-password",
        "ACTUAL_BUDGET_ID": "your-budget-sync-id"
      }
    }
  }
}

Two things that bite everyone once:

• Inside the container, localhost is the container. Your Actual server is not there. host.docker.internal (with the --add-host flag above, which is what makes it resolve on Linux) reaches the host instead.
• Mount /data. That is the budget cache. Without a volume, every start re-downloads your entire budget from the server.

Option 8: From source (for contributors)

git clone https://github.com/henfrydls/actual-budget-mcp.git
cd actual-budget-mcp
npm install
cp .env.example .env   # Edit with your credentials
npm run build
npm run test:connection # Verify it works

Verify your setup

--verify reads the environment of the shell you run it in, and the install options above put your credentials in your MCP client's configuration instead. So set them for the command:

ACTUAL_SERVER_URL=http://localhost:5006 \
ACTUAL_PASSWORD=your-password \
ACTUAL_BUDGET_ID=your-sync-id \
npx -y actual-budget-mcp --verify

It connects, downloads the budget and prints how many accounts and category groups it found. Running it without those variables reports them as missing, which is about the command, not about your install.

After changing your client's configuration, restart the client. Claude Desktop, Claude Code and the rest read MCP configuration at startup and will not pick up an edit until they are restarted.

Configuration

Variable	Required	Description
ACTUAL_SERVER_URL	Yes	Your Actual Budget server URL. See Which URL and port
ACTUAL_PASSWORD	Yes*	Server password (set in Actual Budget under Settings). *Not needed if you use ACTUAL_SESSION_TOKEN
ACTUAL_SESSION_TOKEN	No	For servers behind OIDC, which have no password. Use this instead of ACTUAL_PASSWORD; if both are set, the token wins
ACTUAL_BUDGET_ID	Yes	Budget Sync ID (found in Settings > Show advanced settings)
ACTUAL_ENCRYPTION_PASSWORD	No	Only if your budget file is encrypted
ACTUAL_DATA_DIR	No	Where the budget cache lives. Defaults to your OS data directory (see below)
ACTUAL_READ_ONLY	No	Set to 1/true/yes to run read-only. See Safety

Using a session token (OIDC servers)

If your Actual server signs you in through OIDC, there is no password to put in ACTUAL_PASSWORD, because the server issues a session token instead. Set ACTUAL_SESSION_TOKEN to that token and leave the password unset.

To find it, in the browser where you are signed in to Actual:

1. Open your browser's developer tools
2. Go to Application (Chrome/Edge) or Storage (Firefox)
3. Expand IndexedDB → the actual database → the asyncStorage store
4. Copy the value of the key user-token

It is stored in IndexedDB, not Local Storage, so looking there is why people often cannot find it.

Treat the token like a password: it grants the same access. It also expires; if it does, the server says so and tells you to issue a new one, rather than blaming a password you do not have.

Which URL and port

It depends on how you run Actual, and picking the wrong one gives a connection error that does not explain itself:

How you run Actual	URL
Self-hosted sync server (Docker, a VPS, etc.)	http://localhost:5006, or wherever you host it
The desktop app	http://localhost:5007

The desktop app runs its own sync server on port 5007, and only while the app is open. Close the app and nothing is listening, so the server cannot connect.

That embedded server also binds to 127.0.0.1 only. It is reachable from the same machine and from nowhere else, so if Claude runs somewhere other than the machine with the app, for example another computer or a virtual machine, you need an SSH tunnel or a port forward. Pointing at the host's LAN address will not work.

Where the cache is kept

Unless you set ACTUAL_DATA_DIR, the budget cache goes to the standard data directory for your system:

OS	Default location
Linux	$XDG_DATA_HOME/actual-budget-mcp, or ~/.local/share/actual-budget-mcp
macOS	~/Library/Application Support/actual-budget-mcp
Windows	%APPDATA%\actual-budget-mcp

It is a cache, not your data: deleting it only forces a fresh download on the next run. It lives outside the temp directory on purpose, so a reboot does not throw it away and make the next startup re-download your whole budget.

Finding your Budget ID

1. Open Actual Budget
2. Open Settings: click the arrow next to your budget name, or use the sidebar, More, then Settings
3. Click Show advanced settings
4. Copy the Sync ID

Take the Sync ID, not the Budget ID. Actual shows both, one under the other, and they are both UUIDs. ACTUAL_BUDGET_ID wants the one labelled Sync ID, despite the name of the variable. Using the other one gives you Budget "..." not found on the server, which reads as though you mistyped it when the value was simply the wrong field.

If Sync ID shows (none), that budget has never been synced to a server. This server talks to Actual through its sync server, so a local-only budget cannot be used until you sync it.

Privacy Policy

Data collection. This server collects nothing. It has no telemetry, no analytics and no usage reporting, and none is planned: it reads personal finances, and a tool that does that should not be phoning home. There is no account to create and nothing to opt out of.

Usage and storage. The server talks to one place: the Actual Budget server whose URL you configure. Your budget is cached on your own machine, in the data directory documented under Where the cache is kept, so that it does not have to be downloaded on every start. Nothing is written anywhere else.

Your credentials are handled by your MCP client, not by this server. Claude Desktop stores the password and session token in your operating system's keychain; the server receives them as environment variables at launch, uses them to connect, and never writes them to disk.

Third-party sharing. None. No data is sent to the author, to any analytics service, or to any third party. The only network connection the server opens is to your own Actual server.

Two things worth naming because they are also true: the model you are talking to (Claude, or whichever client you use) necessarily sees the budget data you ask about, under that provider's own terms; and installing via npx downloads the package from npm, which is an ordinary package download and involves no budget data.

Data retention. The cache lives on your machine until you delete it. Deleting it loses nothing, since it is a copy of what is on your Actual server; the next run downloads it again. Uninstalling the server leaves nothing behind except that directory, which you can remove.

Contact. Open an issue at https://github.com/henfrydls/actual-budget-mcp/issues. The full policy is also published at https://actual-mcp.henfrydls.com/privacy/.

Transactions this server writes carry an id it generates

Every transaction, split and transfer created through this server is given a UUID before it is sent, and that id is what the server uses to find the row again if the write reports an error. It is the transaction's own id, not imported_id, so Actual's deduplication of imported files still works on these rows exactly as it does on any other.

Nothing about this is visible in Actual, and it changes nothing for you. It is documented because it is a real difference from writing the same transaction by hand.

Safety

Three things protect your budget from an agent acting on a vague instruction.

Deletes preview before they delete

Every delete tool refuses to destroy anything on the first call. It reports what would be lost and stops there. Deleting takes a second, deliberate call:

delete_category(category: "Groceries")
  → preview: transactions affected, budget and rollover warning. Nothing deleted.

delete_category(category: "Groceries", confirm: true, confirm_name: "Groceries")
  → deleted

The preview covers every row that can be deleted, which is the point of it: dated ahead of today, older than the rest of the budget, one part of a split, or in a closed account. Those four used to preview as blank and delete anyway, so the guard was asking you to confirm nothing. An id that matches no transaction is now refused rather than reported as deleted.

Tools that find their target by name (delete_account, delete_category, delete_category_group, delete_payee) also require confirm_name with the exact name. That is where deleting the wrong thing actually happens: asking for "Adicionales" can resolve to "Ingresos Adicionales". Tools that take an exact id (delete_transaction, delete_rule) need only confirm: true.

A transaction that already exists is not created twice

create_transaction looks before it writes. If the account, the date and the amount all match something already in the budget, it creates nothing and shows you what is there:

create_transaction(account: "Checking", amount: -50, date: "2026-06-05")
  → A transaction like this one already exists, so nothing was created:

      2026-06-05  -50.00  Checking  Claro
        id: 0b6d516e-...

    Same account, same date, same amount. If this is a second, genuine payment
    rather than the same one recorded twice, call again with allow_duplicate: true.

create_transaction(account: "Checking", amount: -50, date: "2026-06-05", allow_duplicate: true)
  → Transaction created

Two identical coffees on one card on one day are a real thing, so the flag exists and one extra call is the whole cost. This is a change from 0.9.x, where the second call created a second row without saying anything.

The check syncs first, so it sees what another client wrote and not only what this one did. That is the case it is for: two agents against one budget, neither able to see the other. reconcile_currency_residual takes the same flag, for the same reason, and syncs before reading the balance it computes from.

It is not returned as an error. The delete tools set isError on their preview so that a repeated call cannot destroy anything by accident. This one does the opposite, deliberately: a repeated call creates nothing at all, and an agent that reads isError treats being asked as being refused and retries, which is what duplicates. Deletes flag; this one does not.

What it costs. One extra round trip per create_transaction, whether or not a duplicate is found. Against a server on the same machine that is not measurable. Against a remote server it roughly doubles the time per write: measured at 80 ms of round-trip latency, 87 ms becomes 171 ms for a single create, and 22 creates in a row go from 1.9 s to 3.8 s. Passing allow_duplicate: true skips the sync as well as the check, so a bulk import that has already been deduplicated elsewhere pays nothing.

Offline and hung servers. If the sync fails the check still runs against the local copy and the write is not blocked, so an offline session keeps working with a weaker check rather than no writes. It says so on stderr, with the reason, so a weakened check is never silent.

A server that accepts the connection and then never answers is the slow case: the Actual library sets no timeout of its own, so the call falls back to Node's own five-minute header timeout before failing. This PR adds a second place where that can happen, now before the write rather than after it, so a hung server can cost twice as long as it used to. Tracked in #99.

What it does not catch:

• A rule that rewrites the amount or the date of the row as it is stored, since the stored row then no longer matches what was asked. Renaming rules, the common kind, make no difference to it.
• A transaction that arrives between the check and the write. The sync narrows that window; it does not close it. This looks before it writes, which is not the same as doing both at once.
• create_transfer and create_split_transaction, which do not run the check yet, and an opening balance from create_account. Tracked in #98.

reconcile_currency_residual and dates

It refuses a date in the future for the adjustment it writes. Its whole promise is to bring the account to the balance the bank reports now, and a row that takes effect later does not do that. It also could not be made to behave: the balance counts transactions up to today, so a future-dated adjustment never entered it and every run booked another one.

"Today" here is the server's today. A client in a timezone ahead of the server can be told its own date is in the future; omitting date, or passing "today", uses the same clock as the check and always works. create_transaction has no such restriction, so recording a purchase dated ahead, which is what you want when a card posts a weekend purchase on the next business day, still works there.

When the account holds transactions dated after today, it asks which they are. Actual's balance stops at today; your bank's figure may not. A card purchase made at the weekend is commonly posted with the following business day's date, so the bank has already counted something the balance has not, and the difference would otherwise be booked as currency drift.

So reconcile reports those rows and books nothing until you say which reading you gave it:

reconcile_currency_residual(account: "Card", target_balance: -140, category: "Cashback")
  → No adjustment was booked for Card.

    This account holds 2 transactions dated after today, so the balance Actual
    reports and the balance your bank reports are not measuring the same thing.

      2026-09-28  -40.00  WEEKEND-PURCHASE  (came from the bank, so the bank counts it)
      2026-10-26  -80.00  SCHEDULED-LATER

      Balance to today:        -100.00
      Those rows come to:      -120.00
      Balance counting them:   -220.00
      You said the bank says:  -140.00

    Which is it?

      future_rows: "exclude"   the bank has not posted them yet.
                               Adjustment would be -40.00.
      future_rows: "include"   the bank has posted them already, ...
                               Adjustment would be 80.00.

The choice is yours, because in general nothing says which a row is. Where something does, it is said: a row that arrived from the bank is one the bank obviously counts, and a row entered here and not reconciled may be one it has not seen. Neither settles it, both narrow it. Rows are listed oldest first, so the nearest one, the one most likely to have been posted, is the first you read.

Accounts with nothing dated ahead are unaffected and never see the question. A row dated exactly today counts as present, not as ahead, because the balance already includes it.

Whichever you choose is recorded on the adjustment itself, as FX residual adjustment (counting 2 transactions dated after today), so a row booked on the wrong reading can be found later instead of being a puzzle.

Measured before this existed: an account at -100.00 to today, a -40.00 purchase dated ahead that the bank had posted, a -80.00 transfer scheduled for later that it had not, and a bank figure of -140.00. It booked -40.00 and left the account summing to -260.00 where the bank ends at -220.00. The adjustment was exactly the purchase, recorded a second time, in a category that calls it drift.

It also refuses a date that does not exist, such as 2026-09-31 or 2026-02-30, rather than calling it a future one. Other tools still accept an impossible date and store it verbatim; that is older than this and unchanged.

It also syncs three times on the happy path: once before reading the balance, once inside the create it delegates to, and once to push. Two of those are consecutive pulls, so a remote server pays a redundant round trip.

Read-only mode

Set ACTUAL_READ_ONLY=1 and the server exposes only the 15 read, analysis and repair tools. The write tools are not registered at all, so they never appear in tool discovery, and an agent cannot be talked into calling something it cannot see.

repair_sync stays available on purpose: it repairs sync state rather than budget data, and hiding it would leave a desynced budget with no way to recover.

Writes are enabled by default. Read-only is opt-in.

Tools (41)

Read (10)

Tool	Description	Example prompt
list_accounts	All accounts with balances	"Show me all my accounts"
get_budget_month	Budget for a specific month	"What does my March budget look like?"
get_transactions	Transactions with filters	"Show me transactions from last week over 5000"
get_category_balance	Category history across a window of months	"How did food look in the three months to June?"
get_budget_summary	Executive budget overview	"Give me a budget summary for February"
get_categories	All category groups and categories	"What categories do I have?"
get_payees	All payees in the budget	"List all my payees"
reconcile_account	Compare an account against a bank figure and explain the gap	"My BHD statement says 45,230.18, what am I missing?"
get_rules	All transaction rules	"Show me my rules"
balance_history	Account balance over time	"Show balance history for my checking account"

<details> <summary>Parameters</summary>

get_budget_month - month (optional): YYYY-MM or natural language ("this month", "last month", "enero 2025")

reconcile_account - account (required) | expected_balance (required): what the bank says | as_of (optional): the date that figure is from, defaults to today; transactions after it are not counted | balance_counts (optional): all (default) counts uncleared rows too, cleared_only does not | lookback_days (optional, default 90). Reads only, books nothing. Lists what might explain a difference, strongest signal first: a charge entered twice, the amount sitting on another account, a row dated past the cutoff, and last a bare amount match. Combinations are not searched on purpose, because on an ordinary account some pair sums to almost any round figure. When nothing explains it, it says so.

get_transactions - account (optional): account name | start_date / end_date (optional): YYYY-MM-DD or natural language | category (optional): category name | payee (optional): payee name | min_amount / max_amount (optional): filter by amount | notes_contains (optional): text to find in the notes, case-insensitive, matching the note of the split a transaction belongs to as well; searches every date unless you give a range | uncategorized (optional): only transactions with no category, leaving out split parents, transfers between accounts on the same side of the budget, and off-budget accounts; searches all dates unless you give a range | limit (optional, default 50)

get_category_balance - category (required): category name or ID | months (optional, default 3): how many months the window covers, and the default is a default, not a limit | month (optional): the month the window ends in, defaulting to this month, so a past period can be asked for directly

get_budget_summary - month (optional): YYYY-MM or natural language. A group with nothing budgeted against it gets no percentage: a share of a non-positive budget has no correct reading, so the row says what it is instead.

balance_history - account (required): account name or ID | start_date (optional, default 3 months ago) | end_date (optional, default today)

</details>

Analysis (5)

Tool	Description	Example prompt
budget_vs_actual	Budgeted vs spent per category	"Am I over budget on anything this month?"
spending_projection	End-of-month spending forecast	"Will I stay within budget this month?"
category_trends	Spending trends over a window of months	"What were my trends in the six months to June?"
spending_by_category	Spending breakdown by category	"Show me spending by category for February"
monthly_summary	Income vs expenses vs savings	"How have my finances been the last 3 months?"

<details> <summary>Parameters</summary>

budget_vs_actual - a category whose net for the month is positive says money came in rather than being listed as under budget, and is left out of the under-budget total. month (optional): YYYY-MM or natural language | group (optional): filter by category group

spending_projection - money coming in is not projected as going out, and the headline counts categories already over budget, including those with nothing budgeted at all. month (optional): YYYY-MM or natural language

category_trends - category (optional): specific category or top spending if omitted | months (optional, default 6): how many months the window covers, and the default is a default, not a limit | month (optional): the month the window ends in, defaulting to this month. Months earlier than the budget file are named in the reply rather than ending the call

spending_by_category - start_date / end_date (optional): date range | include_income (optional, default false) | limit (optional, default 20). It counts each half of a split against its own category and leaves off-budget accounts out, using the same sum as the month cross-check. The share column is a share of spending, so a category whose net for the period is positive (a refund, a reimbursement) is still listed but carries no share, and the footer separates spending, money in and the net. Otherwise a single incoming row shrinks the denominator and the shares add up to more than 100%.

monthly_summary - months (optional, default 3): number of months to show

</details>

Write: Transactions (11)

Tool	Description	Example prompt
create_transaction	Add a new transaction	"I spent 500 on groceries from Cartera today"
create_transactions	Add several at once, all or nothing	"Record these 22 movements from the 18th"
create_split_transaction	One charge across several categories	"Split that 3,000 charge: 2,000 groceries, 1,000 household"
update_transaction	Edit an existing transaction	"Change the amount on that transaction to 600"
delete_transaction	Remove a transaction (previews first, see Safety)	"Delete that test transaction"
update_budget_amount	Set a budget amount, or add to it	"Put 10,000 more into Salud this month"
transfer_between_categories	Move budgeted money between categories, creating no transaction	"Move 114.06 from Reembolsos pendientes to Familia"
recategorize_transaction	Move to another category	"Move that transaction to Entertainment"
create_transfer	Transfer between accounts	"Transfer 10,000 from Checking to Savings"
reconcile_currency_residual	Clear accumulated FX-rate residual	"Reconcile my USD card to 213.82 USD"
run_bank_sync	Sync with linked banks	"Sync my bank transactions"

<details> <summary>Parameters</summary>

create_transactions - transactions (required): an array of {account, amount, payee?, category?, date?, notes?, cleared?, imported_id?} | allow_duplicate (optional). This is the way to record more than one. Every row is resolved and checked before anything is written, and if any row is unusable nothing is created: the reply names the rows that failed and why, and says the rest were fine but not written either. Calling create_transaction many times in parallel is what this replaces — nine at once took the server down, which is how that limit was learned. A row whose payee names an account is refused, since a transfer needs create_transfer. A row whose imported_id is already in the budget is refused, so resending a batch cannot duplicate it.

create_transaction - account (required): account name | amount (required): negative for expenses, positive for income | payee (optional) | category (optional) | date (optional) | notes (optional) | cleared (optional) | allow_duplicate (optional): create it even though one with the same account, date and amount exists

update_transaction - transaction_id (required) | amount, payee, category, date, notes, cleared (all optional)

delete_transaction - transaction_id (required) | confirm (optional): must be true to delete; without it the tool only previews

update_budget_amount - category (required) | amount (required) | month (optional) | mode (optional): absolute (default) sets the budgeted figure, delta adds the amount to what is already there and may be negative. A delta is what an ordinary adjustment is: with rollover and spending in the way, setting an absolute figure means working out a number like 23,661.07 first, and nothing about that number shows it was computed wrongly.

transfer_between_categories - from (required): category to take from | to (required): category to give to | amount (required): positive | month (optional, defaults to the current month). Refuses an income category at either end (Actual marks income per category, so one can sit in a spending group), a month that is not YYYY-MM with the month between 01 and 12, and moving a category to itself. Actual's own handler accepts all three and silently loses, destroys or invents money. Covering an overspent category is allowed and reported.

recategorize_transaction - transaction_id (required) | category (required)

create_transfer - from_account (required) | to_account (required) | amount (required) | date (optional) | notes (optional)

create_split_transaction - account (required) | amount (required): total, must equal the sum of the splits | splits (required): two or more {category, amount, notes} | payee, date, notes, cleared (all optional)

reconcile_currency_residual - account (required) | category (required): where to book the adjustment | target_balance (optional, defaults to 0) | payee, notes (optional) | date (optional, today or earlier; a future date is refused) | allow_duplicate (optional): book it even though a transaction of that amount is already on that day | future_rows (optional): exclude or include, whether the balance you gave already counts transactions dated after today

run_bank_sync - account (optional): sync specific account or all if omitted

</details>

Write: Categories (6)

Tool	Description	Example prompt
create_category	Create a new category	"Create a category called Gym in Gastos Variables"
update_category	Rename or hide a category	"Rename Gym to Fitness"
delete_category	Delete a category (previews first, see Safety)	"Delete the Fitness category"
create_category_group	Create a new group	"Create a category group called Health"
update_category_group	Rename or hide a group	"Rename the Health group to Wellness"
delete_category_group	Delete a group (previews first, see Safety)	"Delete the Wellness group"

<details> <summary>Parameters</summary>

create_category - name (required) | group (required): group name or ID

update_category - category (required): name or ID | name (optional): new name | hidden (optional): true/false

delete_category - category (required) | transfer_to (optional): category to move transactions to | confirm + confirm_name (required to delete)

create_category_group - name (required)

update_category_group - group (required): name or ID | name (optional): new name | hidden (optional): true/false

delete_category_group - group (required) | transfer_to (required): category for orphaned transactions | confirm + confirm_name (required to delete)

</details>

Write: Payees & Rules (5)

Tool	Description	Example prompt
create_payee	Create a new payee	"Create a payee called Netflix"
update_payee	Rename a payee	"Rename Netflix to Netflix Premium"
delete_payee	Delete a payee (previews first, see Safety)	"Delete the Netflix Premium payee"
create_rule	Create a transaction rule	"Create a rule: when payee contains Amazon, set category to Shopping"
delete_rule	Delete a rule (previews first, see Safety)	"Delete that rule"

<details> <summary>Parameters</summary>

create_payee - name (required)

update_payee - payee (required): name or ID | name (required): new name

delete_payee - payee (required): name or ID | confirm + confirm_name (required to delete)

create_rule - condition_field (required): payee, category, amount, notes | condition_op (required): is, contains, oneOf, gt, lt, etc. | condition_value (required) | action_field (required): category, payee, notes | action_value (required) | stage (optional)

delete_rule - rule_id (required) | confirm (required to delete)

</details>

Write: Accounts (3)

Tool	Description	Example prompt
create_account	Create an on- or off-budget account	"Create an off-budget account called Family Investment with 10,000"
delete_account	Delete an account and its history	"Delete the ZZ Test account"
update_account	Rename an account	"Rename BHD Nomina to BHD Nomina DOP"

delete_account needs two keys. It destroys the account's entire transaction history, so a single call never deletes. The first call only previews what would be lost (name, balance, transaction count) and suggests closing the account instead, since closing retires it while keeping its history. To actually delete, call again with confirm: true and confirm_name set to the account's exact name. While it declines, the tool reports isError: true, so a confirmation prompt is never mistaken for a completed deletion.

<details> <summary>Parameters</summary>

create_account - name (required) | offBudget (optional, default false) | initialBalance (optional): human amount, creates the "Starting Balance" transaction. (Actual models accounts as on/off-budget only, so there is no account type.)

update_account - account (required): name or ID | name (required): the new name. Renames only. Budget status (offbudget) and closing are deliberately not exposed: moving an account in or out of the budget changes every month's totals at once, and closing has its own flow in the app that asks where the remaining balance goes. A name already used by another account is refused, because Actual allows duplicates and then neither account can be resolved by name.

delete_account - account (required): name or ID | confirm (required to delete): must be true | confirm_name (required to delete): the account's exact name

</details>

Maintenance (1)

Tool	Description	Example prompt
repair_sync	Repair an out-of-sync budget	"Repair the sync, everything is failing"

If tools start failing with a sync error, the budget's sync state is inconsistent with the server. repair_sync rebuilds that state without touching budget data. Note that deleting the local ACTUAL_DATA_DIR does not fix this, because the inconsistency is in the sync state, not the cache.

It checks the server is there first. Two different problems fail the same way: a broken sync state, and a server that is not running — which for the desktop app means the app is closed, since its server on port 5007 only runs while it is open. repair_sync only fixes the first, so if nothing is listening it says so and changes nothing, rather than spending a repair on a problem that is "the app is not running".

<details> <summary>Parameters</summary>

repair_sync - no parameters

</details>

Prompts

Built-in prompt templates that guide Claude through multi-step financial analysis:

Prompt	Description
monthly-review	Complete budget review for any month: spending vs budget, overspending, suggestions
spending-check	Quick check: are you on track this month?
spending-patterns	Deep analysis of spending trends and patterns over multiple months

Use them in Claude Desktop by clicking the prompt icon, or in Claude Code by asking Claude to use them.

Resources

Pre-loaded data that Claude can reference without calling tools:

Resource	URI	Description
Accounts	actual://accounts	All accounts with balances
Categories	actual://categories	Category groups and categories with IDs
Payees	actual://payees	All payees sorted alphabetically

Usage Examples

Here are real prompts you can use:

"How much did I spend in February?"

"Show me my top 5 spending categories this month"

"Am I over budget on anything?"

"I spent 1,200 on electricity from my BHD account yesterday"

"What's my savings rate this month?"

"Show me all transactions from Cartera in the last 30 days"

"Transfer 5,000 from Checking to Savings"

"What are my spending trends for food over the last 6 months?"

"Create a category called Gym in Gastos Variables"

"Rename the Gym category to Fitness"

"Create a rule: when payee is Netflix, set category to Suscripciones"

"How have my finances been the last 3 months?"

How is this different?

Compared to other Actual Budget MCP servers:

Feature	actual-budget-mcp	Others
Natural language dates	"last month", "este mes", "hace 3 meses"	Only YYYY-MM-DD
Name resolution	Type "Cartera" instead of UUIDs	Requires exact IDs
Output format	Aligned tables, readable text	Raw JSON
Error messages	Clear instructions on how to fix	Generic errors
Analysis tools	Budget vs actual, projections, trends	Not available
MCP Prompts	3 guided analysis workflows	Limited or none
MCP Resources	Accounts, categories, payees pre-loaded	Not available
Bilingual dates	English + Spanish	English only
Transfers	Two linked sides, matching transfer_id, no category, same as the app	Often one-sided or miscategorised
Deletes	Preview, then an explicit confirmation	Run immediately
Out-of-sync recovery	repair_sync rebuilds the local sync state	Reinstall and hope
API version	@actual-app/api 26.x (current)	Often outdated

Security

• This server connects to your Actual Budget instance using the credentials you provide
• Credentials are passed as environment variables and never stored by the MCP server
• All communication with your Actual Budget server happens locally (or to your self-hosted server)
• The server only accesses budget data through the official @actual-app/api library
• No data is sent to third parties

Troubleshooting

Stuck on something that is not listed here? Tell me what tripped you up. A sentence is enough, and a failed setup looks identical to no setup at all from my side.

"Could not connect to Actual Budget server"

• Make sure Actual Budget is running (open the app or start the server)
• Check that ACTUAL_SERVER_URL is correct
• Run npx -y actual-budget-mcp --verify to test your connection

"Authentication failed"

• Your server requires a password. Set ACTUAL_PASSWORD in your config
• If you forgot the password, reset it in Actual Budget under Settings > Server

"Budget not found"

• Check your ACTUAL_BUDGET_ID. Find it in Settings > Show advanced settings > Sync ID

"Budget file is encrypted"

• Set ACTUAL_ENCRYPTION_PASSWORD with your encryption password

"Ambiguous name: matches X, Y"

• Be more specific. Instead of "BHD", try "BHD Nomina" or "BHD Mi Pais"

Node.js Requirement

"ReferenceError: navigator is not defined"

• @actual-app/api referenced the navigator global through 26.6. That global only exists on Node.js 21+, so importing the library on Node.js 20 threw before the server could start. 26.8 dropped the reference.
• Solution: Run Node.js 22 or newer, which is the minimum from 0.9.2 on.

Node Version Managers (fnm, nvm, volta)

MCP server shows "Server disconnected" in Claude Desktop

• Claude Desktop doesn't source your shell profile (.bashrc, .zshrc), so version managers like fnm, nvm, and volta won't work with the default npx command. This applies to a manual npx entry in the config file, not to the Desktop Extension, which carries its own dependencies.
• Solution: Use the absolute path to node in your config. Find it with:

readlink -f $(which node)

Then update your claude_desktop_config.json:

{
  "mcpServers": {
    "actual-budget-mcp": {
      "command": "/home/user/.local/share/fnm/node-versions/v22.22.1/installation/bin/node",
      "args": ["/path/to/actual-budget-mcp/dist/index.js"],
      "env": {
        "ACTUAL_SERVER_URL": "http://localhost:5006",
        "ACTUAL_PASSWORD": "your-password",
        "ACTUAL_BUDGET_ID": "your-budget-sync-id"
      }
    }
  }
}

Alternatively, create a wrapper script mcp-wrapper.sh:

#!/bin/bash
export PATH="$HOME/.local/share/fnm/node-versions/v22.22.1/installation/bin:$PATH"
exec npx -y actual-budget-mcp "$@"

Then use it in your config:

{
  "mcpServers": {
    "actual-budget-mcp": {
      "command": "/path/to/mcp-wrapper.sh"
    }
  }
}

Contributing

Contributions are welcome! Please open an issue or submit a pull request.

git clone https://github.com/henfrydls/actual-budget-mcp.git
cd actual-budget-mcp
npm install
npm run build
npm test               # Run unit tests
npm run test:connection # Needs .env configured

License

MIT - DLSLabs