Geometer 0.1.0-alpha.1

Geometer 0.1.0-alpha.1

Released 24 October 2026. The first public alpha. Free to download, no account, no telemetry.

What you can do

• Find where your agent breaks a rule. Geometer reads your project, works out what
  your agent can do and which business rules apply, and runs it in containers with things
  going wrong on purpose: a lost reply, a request cut short, part of a call applied, a lost
  acknowledgement, a crash. Outside services are simulated.
• Understand it. Each problem reads consequence first, with the run played step by
  step and what the runs where the rule broke had in common.
• Replay it, check your fix, keep the check. The same run, exactly; your change
  checked against it; and a kept check that geo ci runs from then on.
• Earn authority, action by action. The trust file shows what each action of your
  agent may do now and what evidence would make it ready for more. A person grants a level
  (with a limit, an owner and a review date), Guard enforces it, and a breach steps it down.
• Watch, then stop. Guard sits in front of a tool and first only records what it would
  have stopped; approving and denying held calls happens in the Live room.
• Share a certificate. A signed, self-contained report of what was checked, what held,
  what broke and what was not checked, with a dated audit export.
• See everything it does. Under the hood shows Geometer's processes, containers, CPU
  in cores and the network activity it can see.

Downloads

File	For
Geometer-0.1.0-alpha.1-macos-arm64.dmg	The macOS app (Apple silicon)
geo-0.1.0-alpha.1-macos-arm64.tar.gz	The terminal, macOS (Apple silicon)
geo-0.1.0-alpha.1-linux-x86_64.tar.gz	The terminal, Linux x86_64
geo-0.1.0-alpha.1-linux-aarch64.tar.gz	The terminal, Linux arm64
SHA256SUMS, release.json	Digests and the list of files
ghcr.io/geometerlabs/geo:0.1.0-alpha.1	geo ci on Linux CI

Install

• Mac app: download the .dmg, drag Geometer to Applications, then allow it once in System Settings →
  Privacy & Security → Open Anyway (the alpha is not signed by Apple yet).
• Terminal, macOS or Linux: curl -fsSL https://geometer.dev/install.sh | sh (checks the digest and installs
  for your user, without administrator rights).
• Linux CI: ghcr.io/geometerlabs/geo:0.1.0-alpha.1 (see the README).

Step-by-step instructions: https://geometer.dev/docs/install

Check your download

Download SHA256SUMS into the same folder as the file, then:

shasum -a 256 -c SHA256SUMS --ignore-missing     # macOS
sha256sum -c SHA256SUMS --ignore-missing         # Linux

Each line should end in OK. release.json lists every file with its platform, size and digest, and says that
nothing in this release is signed or notarized.

Known limits

• Not signed by Apple. macOS asks you to allow the app once (see the README).
• Apple silicon only on macOS; no Intel Macs, no Windows, no Linux desktop app (on
  Linux, geo open opens the workspace in your browser).
• Agents Geometer can run are those whose tools it can find and simulate. When it
  cannot, it says what is missing instead of reporting a clean result.
• Guard is for trying in development and staging. It has not been qualified for
  production traffic.
• Certificates are signed with a key made on your computer, so they show integrity,
  not who issued them.
• Geometer has been used by its own team only. Your reports decide what we fix first.