Agent Monitor

A Silo extension that keeps track of every coding agent running in your terminals — so you always know which ones are working, which finished, and which are waiting on you — without tabbing through every terminal to check.

What you get

• An Agents view in the Navigator — listing every agent terminal across every workspace. View by in the Navigator header switches between three ways to read it: Recent (the default) — one flat, most-recently-changed-first list, with rows you can drag to reorder (drag from the grip that appears on hover) to pin the ones you care about in place; Status — sectioned into Ready / Working / Idle; Workspace — one heading per workspace. Click a row to jump straight to that terminal, whichever workspace it's in. It's a Navigator view rather than a second side panel, so there's still one place to navigate from
• "N+ hours old" heading — split long-idle agents out into their own heading once they've sat that long (on by default, 4 hours, both configurable — or turn it off — in Settings); it starts collapsed and reveals its rows on hover, opens by default when nothing else is running, and its rows aren't drag-reorderable in the Recent view
• Agent icons — each row (and the terminal tab itself) can show the agent's own brand icon — Claude Code, Cursor, Codex, GitHub Copilot, Grok — in color or a single neutral tone
• Status rows in the Workspaces panel — each terminal running an agent gets a row while it's busy (with elapsed time), once it finishes and needs your attention, or if it errors out
• Terminal tab badges — a spinner, check, warning, or error glyph decorates the tab itself, so status is visible even with the side panel closed
• Sticky "needs attention" — a finished agent stays flagged until you actually view that terminal, so nothing gets missed in a stack of background sessions
• Survives restarts — state and elapsed time (including how long a finished agent has been idle, shown in the Agents view) are restored across app restarts, and a restored row is marked "(unconfirmed)" if the gap since last seen is long enough that the agent may have finished without being observed
• Dead-session recovery — if a terminal's agent backend is confirmed gone after an unclean shutdown, its tab shows a warning and (when Silo could resolve one) a copy-pasteable --resume hint right in the tooltip
• Sound — an optional chime whenever an agent stops working, whether or not you're watching its terminal
• Configurable — a Settings page to choose what viewing a finished terminal does (acknowledge, acknowledge + hide its row, or leave it), the Agents view's icon style, whether/when it splits off the "N+ hours old" heading, and the notification sound

Supported agents

Since Silo 0.39, agent detection is done by the host and exposed to extensions through the ctx.agents API — this extension is a thin view over that shared state, so there's nothing to detect or configure per-agent here. Silo recognizes Claude Code, Cursor Agent, Codex CLI, GitHub Copilot CLI, and anything with terminal shell integration (e.g. pi), including agents typed into a plain shell. See Silo's own Settings → Agents page for the authoritative list and detection details.

Requirements

Silo 0.42.0 or newer (for the ctx.registerNavigatorView API; ctx.agents landed in 0.39).

Permissions

None — the extension only reads host-computed agent state and workspace/terminal titles, all exposed through the SDK without any capability grant.

Installing

From a GitHub Release

1. Go to Releases.
2. Right-click the .tgz asset → Copy link address.
3. In Silo: Settings → Extensions, paste the URL and click Install.

From source

git clone https://github.com/silo-code/silo-extensions
cd silo-extensions/agent-monitor
npm install
npm run build

Then in Silo: Settings → Extensions → Install from folder, point at this directory.

Building

npm install
npm run build        # one-shot
npm run build:watch  # watch mode
npm test             # unit tests