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Aldyn

Your entire IRS audit, in one managed case — on your own machine.

Aldyn reads your Gmail over IMAP and turns every inbound attorney and IRS message — body, subject and attachments — into an organized case: filed to the right business and attorney, with each ask tracked as a deadline and a reply already drafted. Postgres and Redis run in Docker on your Mac. The AI brain is Claude Desktop, on your own subscription. There is no hosted database and no per-token bill.

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macOS 12 or later · Docker Desktop · Claude subscription · Data stays on your Mac

Aldyn running on a laptop: the Mail view listing attorney threads, each tagged with its business, its IRS notice, and a "Needs filing" flag.

Everything on one machine

The audit stops living in your inbox.

A notice arrives, an attorney replies, an IDR lands with four separate asks buried in a paragraph. Aldyn pulls that apart the moment it arrives and puts every piece where it belongs — so the case file assembles itself while you work.

Every inbox, one thread

Connect any number of Gmail accounts. All of them flow into one threaded Mail view you can filter by account, attorney, business, tag, direction or sender. Reply, Reply All, Forward and Compose all send over real SMTP — on your click.

Cases that assemble themselves

Each notice becomes a case — CP504, CP2000, LT11, a Form 4564 IDR — carrying its own action items, full email timeline, extracted documents and pending drafts. Nothing is filed in two places.

Deadlines pulled out of the mail

Every ask in an attorney email becomes one tracked item — document request, question, action, or FYI. Overdue and due-this-week surface on Today, with urgency colours and an internal date ahead of the real one.

Defense check

An independent second read of the case file: scope plus tax-law analysis, run against your engagement letter, flagging what a request reaches beyond. It is a second opinion to raise with your representation — not a legal opinion.

Documents you can actually find

Every IRS notice and attachment — PDF, DOCX, image, ZIP — is extracted on arrival and indexed with Postgres full-text search. Ask for the 2023 bank statements and get the file, not a folder.

Drafted, never sent

The AI files mail, extracts deadlines, summarizes threads and writes the reply. It cannot send. Every outbound message waits in Aldyn's composer until you read it and hit send yourself.

A look inside

Built for the way a notice actually arrives.

Aldyn's Mail view: a sidebar with Deadlines, Mail, Entities, Attorneys, Documents and Knowledge base, beside threads tagged by business and IRS notice.
MailEvery connected inbox in one place, each thread already tagged with its business, its attorney and the notice it belongs to.
A list of Aldyn cases: CP504 Final Notice of Intent to Levy, CP2000 Underreported Income, Form 4564 IDR, and an LT11 levy notice.
CasesOne case per notice, with the live ones marked. Open it and the whole correspondence history is already attached.
Aldyn's deadline list showing a Form 12153 CDP hearing request three days late, a bank-statement pull one day late, and a CP2000 response due in two days.
DeadlinesNot a flat to-do list — every item carries its case, its attorney, a criticality, and an internal date set ahead of the filing date.
A thread in Aldyn with a Defense check panel and a Summarize this thread with AI action, both running in the background.
Defense checkScope and tax-law analysis on the case, plus a thread summary — both run in the background while you keep working.

How it works

Your Mac does the storing. Your Claude does the thinking.

Aldyn has no server of ours to talk to. It exposes itself to Claude Desktop as an MCP server — a local, 24-tool surface over the running app — so the reasoning happens on the Claude subscription you already pay for, with no API key to manage and nothing metered per token.

1

Mail arrives

The poller pulls your connected inboxes over IMAP — INBOX and Sent — and extracts the text of every attachment into a local Postgres.

2

Claude reads it

A Cowork session drains Aldyn's request queue through MCP: it reads the mail, the case and the documents, entirely on your machine.

3

It gets filed

Right business, right attorney, right case. One tracked item per ask, a reply drafted, and items the latest correspondence already satisfies proposed as done.

4

You send

You approve the completions and send the reply from Aldyn's composer. The AI never sends anything on your behalf.

Your GmailIMAP + SMTP Aldyn on your MacPostgres + Redis in Docker · localhost only Claude Desktopyour subscription, over MCP

Not on an app store

Because it isn't a cloud product.

Aldyn is a Mac app that brings its own database with it, so we hand it to you directly as a signed-off installer rather than through a storefront. The .dmg carries the app image, Postgres, Redis and the installer — you drag it to Applications and the first launch does the rest, including registering Aldyn with Claude Desktop.

  • macOS 12+
  • Docker Desktop
  • Claude Desktop
  • ~10 GB free disk

First launch takes one to three minutes: it verifies Docker, loads the bundled images, starts the stack, and opens the app at localhost:8000. Total install time, prerequisites included, is about 10–15 minutes.

Read the full walkthrough →

Local by architecture

Taxpayer data that never touches our infrastructure.

This isn't a privacy setting you switch on. Nrdyn operates no server that Aldyn talks to, so there is nothing for us to see, store, subpoena or lose.

  • Postgres and Redis run in Docker containers on your Mac. There is no hosted database and no cloud sync.
  • The app listens on localhost:8000 only — no inbound network exposure, no firewall changes needed.
  • Your Gmail App Password is encrypted at rest with a passphrase you choose (PBKDF2 + Fernet). Your real Google password is never seen.
  • Attachments and extracted text stay in data/attachments/ on your disk. Back it up, move it, or delete it — it's yours.
  • Nrdyn receives no telemetry, no analytics, no crash reports and no copies of your mail.
  • AI features run through your own Claude Desktop subscription — so case content you send to the AI is processed by Anthropic under your Claude agreement, not ours. The privacy policy spells out exactly what that covers.
  • Every action is written to a local, human-readable audit log.
  • Turn the AI off and document search, filing, deadlines and mail keep working.

Request access to Aldyn

Tell us about your practice and we'll send the installer, the deployment guide, and a walkthrough of your first case.

Request access See the requirements