How to Use Mica: Install It, Connect Excel, and Run Your First AI Task

What You Need

What you do not need is worth stating too: no server, no file upload, and no per-seat license. The workbook stays on your machine, which is the point of the local design. To be precise about the online part: the model conversation transmits task context, not the workbook file itself — nothing about your workbook leaves the machine.

A typical user already has everything except the launcher — most Mica installations start from an existing Excel workbook and a Windows laptop, which is the whole point of the local design.

Each requirement exists for a reason: Windows because the local engine ships for that platform first, Excel because Mica operates an installed copy rather than a web version, and the connection because battery checks, updates, and the model conversation are the network touchpoints. None of it is arbitrary, and knowing why makes troubleshooting easier later.

what Mica is — the overview of what this install is building toward, if you have not read it yet.

Excel 2007 through 365 covers essentially every machine in use in 2026, so the version requirement is rarely the deciding factor — most installs start from a current Excel on a Windows laptop.

Install Mindlink & Mica

The Mindlink launcher is the small desktop app that hosts Mica — think of it as the installer and control panel combined. The steps below take about five minutes.

Mindlink download — the official download page; v1.0.5 for Windows is the current release.

The install is deliberately boring: nothing in it phones home with workbook data, and the launcher settles into a minimal tray presence once running. If you are moving from a cloud tool, the mental shift is that there is no signup wall and no data export to worry about — the workbook never left your machine. The interface you sign into appears in a browser tab — that is the window, not the product; why the window is a browser explains the split in plain terms.

The reason the launcher installs Mica as a separate step rather than bundling it is permission hygiene: the launcher holds your account and batteries, the Excel tool is the component that touches workbooks, and keeping them separate means you can revoke or update one without touching the other.

If the launcher installs but the Mica Excel tool step does not appear, close Excel, reopen the launcher, and check for a pending update — the tool registers with the installed Excel at first launch, so an Excel that is mid-update can delay it.

Authorize Excel

Authorization is how the launcher gets permission to operate on your Excel files. It is a one-time step, and it does not upload your files — it connects the launcher to your local Excel installation.

Browser authorization is the secure pattern here because no credentials are stored inside Mica — the permission lives with your account and can be revoked without uninstalling anything.

The scope of the permission is worth being precise about: authorization covers the open workbook on your machine, not your whole OneDrive, not your email, and not any other app. A tool that asked for more would be a red flag — Mica asks for exactly what it needs to operate.

If you decline authorization, Mica simply cannot operate — it will tell you Excel access is pending rather than silently working without it. The connection is the boundary between the AI and your files, which is exactly where you want a visible, revocable permission.

Run Your First Task

The first task is where the model becomes concrete: describe, plan, approve, execute. Every run follows the same four steps, so the first one teaches the rest.

how Mica works — the step-by-step execution model behind this flow, including how every step is logged.

The worked example that appears most in practice is the column cleanup: a pasted export with trailing spaces, mixed case, and duplicate rows. Described in plain language, Mica plans trim, fix case, dedupe — shows the counts it expects, and executes after you approve — turning a twenty-minute manual pass into one approved run. The same shape scales to merges, reconciliations, and report rebuilds.

A realistic first task takes a minute: describe the cleanup, approve the three or four planned steps, and watch the rows change. The verification habit pays off — compare the before-and-after counts, and if a step looks wrong, describe the correction and re-run.

Batteries & Usage

Mica is free to download; batteries are consumed as you use Mica. Every conversation and every task draws on your battery, your remaining battery shows as a percentage in the launcher, and you buy batteries singly or in packs — so light users pay very little, and only heavy automation really spends batteries.

Because the cost follows your usage rather than the calendar, the free download is genuinely usable: install, authorize, and run the occasional job with the trial allowance to start.

battery pricing — the exact packs, what a task costs, and how to top up.

The honest usage pattern: a user running one or two cleanup tasks a week spends very little, because batteries are consumed as you use Mica and most real jobs draw on only a portion of one.

Compared with the cloud subscriptions many users are used to, there is no seat to buy and no monthly minimum — which is precisely why light users find the local model cheaper: the cost tracks the work, not the calendar.

Troubleshooting

fixing formula errors — the #VALUE!, #NAME?, and #REF! guide for the errors a task may surface.

That is the complete setup: install, authorize, run, and the handful of things that can go wrong. If this guide reads like a lot of steps, the reality is one five-minute install followed by tasks that each take a minute — the setup cost is paid once, and it is the entire cost of entry.