Review an on-device route before dispatch: destination, residency, context counts, tool scope. Choose an alternative or cancel. Cloud only if you bring your own key.
Coil is an on-device-by-default AI agent harness for macOS. It runs open-weights language models on Apple silicon and routes every prompt to the right model: a small, fast router for quick turns and a strong worker for hard ones, while showing you exactly what it decided and why.
KEY POINTS
* On-device by default. No account, no telemetry, nothing sent to Silo Systems. Optional Bring Your Own Key, off unless you turn it on, can answer from your own account with a supported cloud provider instead.
* Pre-dispatch route review. Inspect destination, model residency, route reason, bounded context counts, and proposal-only tool scope; choose a loaded eligible alternative or cancel.
* Precision routing. Every answer carries its receipt: model, tier, role, confidence, tokens/second.
* Reviewed workspace tools. Scope Read, Write, Edit, read-only bounded shell, and graph queries to one selected folder with per-run policy, exact file previews, explicit approval, cancellation, and content-safe exportable trace receipts.
* Workspace map. Choose a folder and Coil maps the Swift types, protocols, and functions inside it, ranked by how connected they are, as a constellation you can hover and inspect.
* Knowledge wiki. Name a topic and the worker model drafts a Markdown page. You review the proposed change first, and nothing is written until you approve it.
* Live model residency. See what is loaded, pinned, and evicted against your unified-memory budget.
* Local memory. Conversations distill into a searchable on-device store you can inspect, pin, and delete.
* Open-weights models download once after a consent prompt, then Coil works fully offline. If your Mac cannot hold a local model, first run offers a Bring Your Own Key path that skips the download entirely.
WHAT IT IS NOT
* Coil is not a cloud chatbot. With Bring Your Own Key off (the default), your prompts, files, and memory never leave your Mac. When you switch it on, turns go straight from your Mac to the provider you chose, under your own key; nothing ever goes to Silo Systems.
* Coil does not run unrestricted shell commands. Its workspace tools are bounded and user-reviewed.
REQUIREMENTS
* macOS 14+, Apple Silicon, 16 GB unified memory or more (36 GB recommended for the strong-worker tier). One consent-gated model download on first run.
PRICING
* One-time purchase. No subscription.
Ratings & Reviews
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The Workspace pane now maps the Swift symbols of a folder you choose, right in the app. The Wiki pane now drafts a page on a topic you name, and nothing is written until you approve it.
Version 1.15.0
The developer, Omar Quddusi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More