Brief, mostly signal

Trellis is an open-source macOS terminal with an MCP server

Early-stage Swift app with a CLI, a local JSON-RPC socket with expiring grants, and an optional off-by-default MCP server. Build from source with swift build.

Read the source at github.com

What the research found

Trellis is an early-stage open-source native Swift macOS terminal with a CLI, a local JSON-RPC automation socket with expiring grants, an optional off-by-default MCP HTTP server, SSH host management with Keychain passwords, and no telemetry; build is via swift build from source.

Claims and how well the evidence supports them

Built as a native Swift macOS app on a vendored SwiftTerm 99%
Automation is an owner-only local JSON-RPC socket with scoped, expiring grants 99%
MCP server is optional, off by default, and uses the same grants 99%
No telemetry; terminal output and typed input are never logged or persisted 97%

Evidence

github.com https://github.com/bearstouch/trellis

Actionability rated low.