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Each entry is a released version of the tesser CLI. Changes to boxes, billing, and the control plane are listed under the first release that followed them.
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November 7, 2026
  • tesser cloud connect --tag key=value adds your own tags to the instances Tesser launches in a self-hosted org’s account. See Your own tags.
  • Members of a self-hosted org can tesser ssh to its microVM boxes through a port the host forwards to each box. See tesser ssh.
  • A service with box_address = true sees its box’s address as Host and Origin, so the app can use http://$TESSER_BOX_HOST:<port> as its one URL. See The daemon.
  • On a workbench, tesser exec and a command line given to tesser ssh get its services’ committed [env] load values. See Loading env files.
  • tesser ls shows a dev run that is held for its dependencies as waiting for them to be healthy. See tesser ls.
  • tesser snapshot create on a commit off the default branch says which boxes will start from the new snapshot. See tesser snapshot create.
  • When a command given to tesser ssh fails on a local file the box does not have, the CLI says to sync first or shows how to copy the file to the box. See tesser ssh.
  • A box launch cut off by a Tesser deploy is retried with the same request instead of failing.
  • Setup no longer reruns after every reboot on a box only because Docker is running.
  • The setup guide pins an app that keeps its state on local disk, such as SQLite, alone without an infra box, and sends uploads to object storage. See Put a repo on Tesser.
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November 6, 2026
  • New hosted boxes run as microVMs on Tesser’s hosts, and on their own EC2 instance when no host has room or the CLI is too old to reach a microVM. See Sleep and wake on a microVM.
  • A self-hosted org can run its boxes as microVMs on r8a.metal-24xl hosts in its own account with tesser cloud connect --fleet, and the dashboard’s usage view counts the hosts’ AWS spend by host hours. tesser ssh to these boxes needs CLI v0.72.0. See tesser cloud connect.
  • Boxes run on m8a instances instead of m7a, and connect checks that the subnet’s zone offers m8a. See What connect checks.
  • A command line given to tesser ssh reads stdin as a pipe, so a script with quotes can go in a heredoc. See tesser ssh.
  • When a wait for a dev server times out, the hint says to run tesser wait <box_id> --timeout 9m again while it reports progress. See tesser wait.
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November 5, 2026
  • Grants last until tesser grant rm unless made with an expiry, tesser grant ls shows each grant’s last use, and new GitHub grants must pin a branch or *. See Grants.
  • tesser dev starts faster: box readiness arrives over a websocket, and apt packages install beside the sync.
  • tesser dev says when a run’s log goes quiet while it waits. See While tesser dev waits.
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November 5, 2026
  • tesser ssh --new makes a workbench and opens a shell on it. See tesser ssh.
  • Syncing to a box with a clean snapshot skips git delivery.
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November 5, 2026
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November 4, 2026
  • [env] load files reach every shell on the box and the command line given to tesser ssh. See Loading env files.
  • tesser dev names the busy process while nothing serves, a dependency that stopped serving, and a snapshot build in flight. See While tesser dev waits.
  • tesser wire --json prints wires as JSON. See tesser wire.
  • tesser snapshot create shows an estimate of how long the build will take. See Snapshots.
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November 3, 2026
  • tesser exec survives a dropped SSH connection. See tesser ssh and tesser exec.
  • tesser dev a b wires each service’s dependencies to the services it started.
  • Snapshot builds get [env] load files. See Loading env files.
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November 3, 2026
  • The CLI updates itself in the background once a day when it was installed with the install script. See Automatic updates.
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November 3, 2026
  • The daemon moved off port 3000 to 7678, so it no longer collides with your own dev server. See Ports on the laptop.
  • [env] load reads dotenv files into setup, dev, and exec, and tesser dev restarts when one of those files changes. See Loading env files.
  • tesser dev a b starts several services at once in dependency order. See tesser dev.
  • A glob starting with ! in run.setup_inputs leaves paths out. See Skipping setup.
  • tesser util with no box id covers the whole org, one row per service and size. See tesser util.
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November 2, 2026
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November 2, 2026
  • tesser status, tesser logs, and tesser sync take a service name instead of a box id. See A service name instead of a box id.
  • tesser make --ensure-running turns your worktree’s own box of the service into the shared instance, keeping its warm build. See make --ensure-running.
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November 2, 2026
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November 2, 2026
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November 2, 2026
  • tesser service show prints a service’s shared instance. See tesser service show.
  • When less than two hours of credit or spend limit is left, make, dev, status, and sync print a warning on stderr. An out-of-credit box returns a 402 instead of a retryable 503. See Credit.
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November 2, 2026
  • Members can open the org’s shared boxes on box-<id>.localhost without a review link. See Box addresses.
  • The first org you create starts on Hobby with $5 of credit. See Credit.
  • tesser.sh/auth.md explains sign-in for agents.
  • The install script puts tesser on the PATH for later GitHub Actions steps. See Install.
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October 31, 2026
  • A coding agent that names a box you did not make is refused rm, sync, exec, dev, keep, and other changing commands unless it passes --yes. See Commands an agent is refused.
  • tesser wait waits for a box’s dev run to be ready. See tesser wait.
  • tesser rm removes several boxes at once. See tesser rm.
  • tesser exec and tesser ssh set TESSER_* variables such as TESSER_SLOT on the box.
  • Boxes run the Node version your repo pins. See The box.
  • tesser dev restarts when the service’s dev script changes, and says when it did not.
  • Services are available on every plan. See Plan limits.
  • Box disks are faster.
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October 28, 2026
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October 28, 2026
  • tesser dev --snapshot builds a repo snapshot. See Building one.
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October 27, 2026
  • Sleep is now hibernation: memory goes to disk, and on wake processes carry on where they stopped. See What survives sleep.
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October 27, 2026
  • Repo snapshots give new boxes your repository and installed dependencies. See Snapshots.
  • Dependencies wake with the boxes that use them and stay up while those boxes are in use. See What counts as idle.
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October 27, 2026
  • The CLI prints box addresses as box-<id>.localhost, a hostname browsers’ content security policies accept. See Box addresses.
  • tesser dev and tesser sync --restart wait for the [health] check before returning.
  • A box woken from the browser stays awake, and its page says when the wake ends. See Sleep and wake.
  • Only a person opening a shared box in a browser wakes it. Scripts get a 503. See What viewers get.
  • tesser dev on a pool box starts sooner.
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October 23, 2026
  • tesser ssh reuses its connection, so later commands connect faster.
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October 22, 2026
  • Seeding a new box is faster.
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October 21, 2026
  • Sign-up is open to everyone, with no private beta.
  • Shared boxes open at https://box-<id>.tesser.review/ for the org’s members. See Share gateway.
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October 20, 2026
  • tesser login opens one simple card for naming your first org and authorizing the CLI, and admins can rename the org. See Orgs.
  • Localhost links in a shared box’s pages are rewritten to the box. See Share gateway.