TEND · YOUR MAC, QUIETLY WORKING

Tend your contact garden
Watch, learn, and update details —
in real time

They text you a new email. Your host shares the Airbnb wifi. A best friend moves. Not to worry — Claude captures the details so you don't have to.

Download One-time purchase · runs entirely on your Mac · requires an always-on Mac
Contact EnricherV1 · Included

We get new details all the time, and Apple's ecosystem doesn't "just work." Let the status quo fall behind — and welcome an always-on, self-healing future in its place. Not in the future. Today.

Reversible by design

No one wants to lose data — incorporating new information needn't be scary. With Tend, it won't be: Tend upserts. New address or email info fills the vCard's standard alternate fields till full; once full, it makes a best-guess insert, moving older data to the contact's Notes.

Facts, not commands

Worry not — message text and email content are data, never a command. Unknown contacts sending along detail? Ignored.

Remote ClaudeRoadmap

A planned second daemon: text yourself [claude] … and it runs on your Mac and replies. Not in this installer yet — today's download is the Contact Enricher.

9:41
DR Dana Reyes
Today 9:41 AM
moved last week! new place is 214 Alder St
oh wait, sorry — that's SE
it's in Portland, Oregon 🏡
Text to self: Dana Reyes moved — new home address saved
— next run —
wifi for the housewarming on 08/19: Maple5G / hunter2 🙂
Text to self: Dana Reyes wifi — Maple5G / hunter2

What it needs

An internet-connected Mac, logged into your channelsMessages, WhatsApp, Email — choose what's monitored.
An LLM installedReasoning happens on your Claude — or install a free, locally-run LLM to keep everything on-device.
Full Disk Access (one-time)Required to read your message stores.
Contacts automation (one-time)Tend needs this to write Contacts. No code-signing needed.

Always-on means your Mac has to be awake

What "keep awake" does, and the trade

You set Tend's schedule — but a watchdog can't protect while it sleeps. This service runs reliably on a desktop, and on a laptop that runs caffeinate — an Apple-provided agent that prevents idle-sleeping.

Limitations & risk — read this

Tend edits your address book. Built with care, trust, and reversibility in mind — but you should still be crystal clear on the following:

  • !
    New contacts are opt-in and gated

    By default Tend only edits contacts you already have. Turn on Save-new and it can add a brand-new card — but only after genuine back-and-forth with that person and your explicit 👍, saved to the account you choose. It's off by default, and unengaged texters are still skipped.

  • !
    Almost always reversible, but not perfect

    Overwrites log old values in Notes: mistakes are generally recoverable. Non-destructive is the goal, not a guarantee.

  • !
    Tend updates your Mac; your phone may vary

    An edit lands wherever the card lives in Contacts — it reaches your phone only if your phone syncs the same account. Brand isn't the account: an iPhone can sync Google Contacts and ignore iCloud. Tend assumes you've confirmed your phone's account matches your Mac's.

  • !
    Wifi passwords are written in cleartext

    Wifi enrichment is on by default: Tend writes the network and password into Notes as plain text. A real privacy/security eyebrow-raiser — anyone with your synced contacts can read it. Don't like it? Turn it off in the installer, or later by re-running it.

Tend — your contacts are a garden. Grow them well.