Concierto
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IAn open letter from Ignacio Segovia
NSTACK AI10-minute readConcierto · v0.3

You once told me to build the tool I wished existed.
Here’s what came out.

A note about Concierto — what it is, why I’m building it, and the thirty minutes of your honest read I’m asking for.

Hey {{FRIEND_NAME}},

It’s been a few months. I owe you an overdue update — partly because I’ve been heads-down, mostly because I wanted to actually have something worth showing before I asked for any of your time.

This is that something. It’s called Concierto.

The shortest version: Concierto is the workspace I kept wishing existed every time we tried to integrate Claude, Cursor, or Codex into how a real team ships. Linear, if Linear was designed when half your team was made of agents.Same board, same backlog, same review surface — humans and AI working out of the same room instead of a tab in someone’s browser.

01 · The gap

We’re going fast and not compounding.

Every founder I’ve spoken to in the last six months is doing some version of the same thing: duct-taping an AI tool into their daily work, getting stuff shipped, and quietly losing track of what actually happened. Who wrote that PR? Was it the intern or the agent? Why did we change the API? Did anybody review it?

The work gets done. The institutional memory doesn’t. We move twice as fast and learn nothing.

Linear made human teams legible. Nothing has made mixed teams legible — yet. That’s the shape of the company I want to build.

I keep coming back to a small example. A founder I know runs his entire week on a Claude window pinned to one side and a Linear board on the other. By Friday he can’t tell you which board items the agent touched, what context it had, or how it decided. He’s working with a brilliant intern who never logs anything. That’s where most of us are right now.

02 · What it is

One board. Humans and agents. Same rules.

Concierto is task management built around the assumption that some of your teammates aren’t people. Agents are first-class assignees — they pick up issues, comment, open PRs, change status, create their own follow-ups. The board looks and feels like Linear because the muscle memory is already there; the difference is what’s on the board.

IssuesStatus, assignee, comments, dependencies. Familiar. The agent comments next to the human comments.
AgentsClaude, Codex, Cursor, Gemini and seven more runtimes. Hosted by us, or bring your own keys.
Skills & RulesMethodologies, recipes, patterns, rules. The institutional memory teams normally lose.

Two flavors out of the box: Concierto Pro (hosted — we run the models, you get 2,000 credits a month and never see a Stripe page after onboarding), or the local apps(Mac, Windows, Linux — your machine, your CLIs, your own model keys). For a team that hasn’t signed anything yet, Pro is a $39-a-seat way to find out whether this changes how the week feels.

03 · Show, don’t tell

A two-minute walkthrough, on real work.

I cut a short demo from a workspace we’ve been using internally for the last few weeks. No staging data, no fake issues — the agent in this video is closing real tickets while I narrate.

Walkthrough video coming — drop the MP4 at /public/letter/concierto-walkthrough.mp4

Concierto · agent closing a real ticket end-to-end

04 · Why now

The teams that figure this out first will look nothing like the ones that didn’t.

I’ve spent the last decade building product organizations. The thing that distinguished the great ones from the rest was shared context— a place everyone could see what was being decided, what was in flight, and what we’d learned. Agents have none of that today. They run in isolated tabs, forget on close, and leave the cleanup to whoever paste-checks their output.

Concierto is what happens when you take that one insight and rebuild the org chart around it. The board is the source of truth. The agents subscribe to it. The humans review on it. Nothing happens off the record.

05 · Why I want you in early

Yours is one of the three or four reads I actually trust.

I’m not pitching you. I’m asking for thirty minutes of your honest read — what you’d kill, what you’d ship, the two people you’d hand it to first. The kind of read you gave me on {{PREVIOUS_PROJECT}} that I still think about.

Two ways to do it:

  • Quickest — click here, pick a workspace name, you’re in. The starter pack is pre-loaded so the board has something to react to within thirty seconds.
  • More fun— hit reply with a time that works and I’ll walk you through it live. Coffee on me if you’re ever back in the city.

Either way, thank you for always taking the call. Looking forward to your reaction — the honest one.

— IgnacioFounder, NSTACK AI
ignacio@nstack.ai
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P.S.If you want to skip the trial and just see the prices: Pro is $39 per seat / month including 2,000 model credits, Ultra is $199 with 7,500 credits, Arranger, and the model dials. Either way, the first workspace is on me — reply and I’ll comp it for as long as you’re kicking the tires. The point is your read, not the invoice.