The agent that runs the busywork between your tools.
Arca watches Slack, Notion, and Google Calendar — acts when it's sure, asks when it isn't. No silent automation, no surprises.
Three tools,one agent watching all of them.
Reads threads, drafts replies, files updates into the right channel, and pings the right person when something needs a human.
Keeps task status current, moves cards when work is actually done, and writes weekly summaries from what happened across the workspace.
Flags conflicts before they become a problem, proposes reschedules, and blocks focus time automatically when your week gets packed.
Reads threads, drafts replies, files updates into the right channel, and pings the right person when something needs a human.
Keeps task status current, moves cards when work is actually done, and writes weekly summaries from what happened across the workspace.
Flags conflicts before they become a problem, proposes reschedules, and blocks focus time automatically when your week gets packed.
Confidencedecides who acts.
- 01
- 02
- 03
Arca watches
It connects to Slack, Notion, and your calendar, and reads what's actually happening, not just what's scheduled.
It scores its own certainty
Every action gets a confidence score before it happens. High-confidence, low-risk actions go through on their own.
Anything uncertain comes to you
Lower-confidence or higher-stakes actions get held and shown to you first, with the reasoning attached, so nothing happens silently.
Confidencedecides who acts.
- 01Arca watches
- 02It scores its own certainty
- 03Anything uncertain comes to you
Arca watches
It connects to Slack, Notion, and your calendar, and reads what's actually happening, not just what's scheduled.
It scores its own certainty
Every action gets a confidence score before it happens. High-confidence, low-risk actions go through on their own.
Anything uncertain comes to you
Lower-confidence or higher-stakes actions get held and shown to you first, with the reasoning attached, so nothing happens silently.
Pick the modelthat runs your agent.
Arca isn't locked to one AI provider. Switch the model powering your agent at any time, depending on what a workflow actually needs.
Best for high-volume, low-stakes work like status updates and routine replies. Cheapest to run at scale.
The default for most teams. Strong reasoning at a cost that holds up running all day, every day.
For the decisions that matter — scheduling conflicts, customer-facing replies, anything you'd want a second opinion on.
High-volume, low-stakes work.
Default for most teams.
For decisions that matter.
One founder,building in Zürich.
Aidan is building Arca alongside Budgetly, a Swiss fintech app for Gen Z. Arca started from the same problem: small teams drown in the busywork between tools, and most of it doesn't need a human in the loop every single time.
The confidence-gated engine is the core idea — Arca only executes when it's sure, and asks when it isn't. No silent automation, no surprises.