Your AI staff for engineering management.
Talk to one chief of staff. Sage triages every message, summons only the specialists it needs, and answers back in a single voice. They share one memory, one roster of your people, and your writing voice — all on your own Mac.
Spreading activation. Recall lights up a multi-hop path.
An EM’s real job is assembling context.
Every answer lives in a different tab. The stitching is paid for, all day, by the most expensive people on the team.
To answer one question — “are we on track for the migration, and who’s overloaded?” — you open:
“You weren’t hired to be a switchboard between dashboards.”
Generic assistants don’t fix this. They have no memory of your team, no access to your real signals, and no idea who anyone is. Zimac is built to hold that world for you.
“Are we on track for the migration, and who’s overloaded?”
One question. One answer. Zimac reads the signals, knows your people, remembers the last three conversations, and replies in one synthesized voice — instead of leaving the assembly to you.
One agent. The right team, quietly.
You feel like you talked to a chief of staff — not a switchboard. Sage routes spanning questions to several specialists at once and folds their work into a single reply.
Triage
Sage reads every message and decides what it actually needs — one domain, several, or none at all.
Route
Sage summons only the specialists the question touches. The rest stay benched — not loaded into the call, so you don’t pay for a team you didn’t need.
Synthesize
Their findings come back as one answer, in one voice — grounded in a shared memory, a shared roster of people, and the way you write.
Eight specialists. One shared mind.
Sage, Quill, Joy and Cody are on by default. The rest stay benched until a question summons them — and you can add your own for whatever your stack needs.
A better connection, not a bigger model.
Zimac is engineered like a connectome, not a chat log. The memory is a real, navigable graph — and it learns the shape of how you think.
Engram memory log
An append-only, length-prefixed log protected by CRC32 and a hash chain. Appends are O(1) and crash-safe; it tolerates a torn write and auto-recovers from backup. Your memory survives a power cut mid-write.
Hypergraph
People, notes, docs and links are cross-linked through shared topics, with near-duplicate detection. Stays navigable past 100k+ items.
Spreading activation
Recalling one memory lights up a multi-hop constellation of related context — sub-millisecond, zero tokens — split into fact versus hedged.
Synaptic plasticity
Learned per-pair weights: ties that co-recall strengthen (Hebbian), and fade over about 21 days. Zimac literally learns how you think over time.
Emergent edges
When ideas keep co-firing, Zimac mints an association nobody authored — surfaced only as a hedged “pattern noticed,” never as fact.
Voice fingerprint
A measured fingerprint of your own writing — your em-dash habits, your filler, your cadence — constrains every draft so it sounds like you, not like a generic assistant.
It’s a workspace, not a chat box.
Each studio is a full screen. The conversation is one door; behind it are the timelines, plans, boards and graphs your team actually lives in.
Drag a block. It deconflicts itself.
One row per person; blocks span weeks tagged work, on-call or vacation. Drag a block and Zimac auto-deconflicts so nobody’s double-booked. Tidy repacks, +4 wks extends, Copy for Sheets exports.
One button — Make a project — turns a plan into a tracked project: work blocks become end-of-week milestones on your board. Plan and project stay linked and reconcile block-by-block.
Your initiatives as a living timeline.
Sage clusters dated items into named initiatives, drawn as glowing lanes with draggable orbs. Built to be corrected: each suggested project arrives as a question you confirm (✓) or dismiss (×).
Confirmed and hand-made projects are locked from re-maps. Each one infers a lead and contributors — every name with a one-line “why”.
Pin a chart. It refreshes for free.
Pin any chart a specialist draws into a standing board. Tiles remember their input and refresh at zero token cost — stateless compute that never bills the model.
A board can never quietly run up a bill, because refresh isn’t bound to an agent at all.
People, notes and docs as one graph.
Everything Zimac knows — people, notes, docs and links — as a single cross-linked, traversable graph. Follow a thread from a person to a decision to the doc that drove it.
Find a note and see how it connects — every tie explained in plain language. Token-free; no model call to search.
Paste a doc; get margin comments from each specialist’s lens, and rewrite flagged sections in your voice.
Drag .eml / .mbox files in and Zimac reads them into the knowledge base. Read-first: it never connects to your account or controls Apple Mail.
The conversation with Sage and the team — the front door to everything else.
Jump across people, memory, docs, chats and live data pulls from anywhere in the app.
Grounded in your real systems.
Not guesses. Each integration is optional and lights up exactly one specialist when you add it — the dot is that specialist’s color.
Cheap by construction, not by hope.
Several independent layers keep spend down — and Zimac never spends a cent on your behalf until you decide it should.
A cheap front door
Every message hits a gate first. When in doubt, it routes up — never down.
Benched specialists
You pay for the team you summon, not the whole roster. Specialists you don’t need are never loaded into the call.
Burn-rate-aware downgrades
It reads your budget, projects spend to the reset date, and suggests stepping down a tier only if you’re on pace to overshoot and a cheaper tier is actually available. Never a blind downgrade.
Central LiteLLM proxy
Routes through your company’s LiteLLM proxy (Claude on Vertex) for central visibility, per-key virtual budgets and rate limits. The default model is Sonnet.
The Night Shift
An optional, token-frugal watcher.
It re-checks a small watchlist on a timer and taps you on the shoulder only when a value materially changes.
Off by default · spends nothing until you flip the switch.
Local by default. Hardened in depth.
Your data lives as plain files under ~/Documents/Zimac. Nothing leaves your machine except the model calls themselves.
Keychain secrets
Secrets live in the macOS Keychain, encrypted at rest. The .env holds only non-secret config, owner-only (chmod 600), kept outside iCloud sync — a stolen disk or errant sync exposes no keys.
Binds to localhost
The server binds to 127.0.0.1 only. There is no account, no sign-up, and no server-side copy of your data.
Injection defense
A standing directive treats retrieved content as data, not instructions. wrapUntrusted() fences every external result with provenance markers and size caps; redactSecrets() scrubs live secret values from anything heading to the model or logs.
Cards you act on
Consequential actions — drafts, meetings, schedule changes, memory edits — surface as cards you must act on. They never fire silently. The agent proposes; you dispose.
Durable by design
Atomic temp→fsync→rename writes with CRC checks everywhere. Automatic gzip GFS backups are written outside iCloud, with verify and restore.
Built to be vended
Shared infrastructure is a sensible default; anything personal — names, chats, memory, profiles — is per-user and never bundled when you hand Zimac to a coworker.
Two steps, then your key.
A native Mac app. The only required credential is a LiteLLM API key — every other integration is optional and lights up one specialist when you add it.
Drag to Applications
Open Zimac.dmg and drag Zimac into /Applications.
Paste your key
On first launch, an onboarding flow asks for your LiteLLM key (required) plus optional GitHub and DX tokens. In-app hints point to where each one lives.
New to it? The how-to guide walks through every credential and the built-in diagnostics panel.
Stop being the glue. Start being the lead.
Let one chief of staff hold your world — the people, the signals, the memory — so the most expensive hours on your team go to judgment, not stitching.
Download for Mac