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feat(agents): signed commits, a simpler per-agent form, effort and fast mode, relay only - #74
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Merge Risk: 🔵 Low · up to
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| Check name | Status | Explanation | Resolution |
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| Docstring Coverage |  |
Docstring coverage is 70.13% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 77 functions across 20 files. (2 skipped:… | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Description Check Check skipped - CodeRabbit’s high-level summary is enabled. Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request. Title check The title clearly summarizes the main changes: signed commits, a simpler agent form, effort and fast mode, and relay-only configuration.
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Docstring coverage is 70.13% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 77 functions across 20 files. (2 skipped: 2 unsupported.)
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Write docstrings for the functions missing them to satisfy the coverage threshold.
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Review comments at @voltage/images/buzz-agent/README.md:
- Line 155: Update the manual signing guidance to apply the account-helper and
GPG-agent behavior only to the default OpenPGP format, and narrow the
private-key statement to OpenPGP keys so it does not imply the same setup for
runtime-enrolled SSH keys.
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📒 Files selected for processing: 22
apps/buzz-gpui/crates/app/src/agent_plugins/remote_workspace/config.rsapps/buzz-gpui/crates/app/src/agent_plugins/remote_workspace/enroll.rsapps/buzz-gpui/crates/app/src/agent_plugins/remote_workspace/enroll_form.rsapps/buzz-gpui/crates/app/src/agent_plugins/remote_workspace/enroll_tests.rsapps/buzz-gpui/crates/app/src/agent_plugins/remote_workspace/mod.rsapps/buzz-gpui/crates/app/src/agent_plugins/remote_workspace/settings.rsapps/buzz-gpui/crates/app/src/agent_plugins/remote_workspace/signing.rsapps/buzz-gpui/crates/app/src/agent_plugins/remote_workspace/tests.rscrates/buzz-acp/src/acp.rscrates/buzz-acp/src/pool.rscrates/buzz-sandbox-reaper/src/enroll.rscrates/buzz-sandbox-reaper/src/enroll_tests.rscrates/buzz-sandbox-reaper/src/manager_tests.rscrates/buzz-sandbox-reaper/src/profile.rscrates/buzz-sandbox-reaper/src/profile_tests.rsvoltage/images/buzz-agent/README.mdvoltage/images/buzz-agent/account.pyvoltage/images/buzz-agent/profile.example.jsonvoltage/images/buzz-agent/profile.pyvoltage/images/buzz-agent/test-accounts.pyvoltage/images/buzz-agent/test-profile.pyvoltage/images/buzz-agent/test-restore.py
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thebrandonlucas
previously approved these changes
Oct 22, 2026
The Runs on picker offered the direct Kubernetes provider, which needs cluster and AWS access on the developer's device, next to the Sandbox manager, which needs only their Buzz key, and new agents defaulted to Kubernetes. Remove the Kubernetes provider from the Remote workspace type: no picker and no provider config box, the relay and manager key are always shown with the enroll form, new agents start on the relay, and every saved config reads as the relay's.
Sandbox commits could not be signed: the image required OpenPGP signatures from a GPG agent forwarded from the developer's machine, which nothing forwards through the relay, so every commit failed, and default branches require signed commits. The profile's git.signing_key fingerprint becomes git.ssh_signing_key, an OpenSSH Ed25519 private key generated at enrollment and registered on the developer's GitHub account as a signing key. The bootstrap writes it to a private file outside checkpoints, and the account helper configures gpg.format ssh with commit and tag signing. The manual OpenPGP path stays. Enrollment also fills in the developer ID from the signing owner's entry when the profile leaves it empty, so developers need not know it.
BUZZ_ACP_FAST_MODE (on/off) is applied like BUZZ_ACP_EFFORT_LEVEL: on each new session, through the running model's fast-mode option, claude-agent- acp's "fast" or codex-acp's "fast-mode", and skipped when the model has none. Transport errors are fatal as for effort; a rejection keeps the adapter's default.
Settings drops the Relay and Manager key fields: every agent asks the build's Sandbox manager on its community. It adds Effort and Fast mode pickers, sent as BUZZ_ACP_EFFORT_LEVEL and BUZZ_ACP_FAST_MODE, explains the Model field per harness, and drops Goose, which the agent image does not have. The enroll form asks only for the GitHub token, Git email (prefilled from git config), via profile, 1Password token and model credentials. Enrolling reads the token's GitHub login and name for the profile, creates an Ed25519 agent signing key with ssh-keygen and registers it on that account, and removes the key again unless the manager stores the profile. The developer ID is left for the manager to fill in.
Remote agents are new, and the relay flow is their only path, so drop what it replaced: - the Codex device-login setup gate: setup.js, its entrypoint branch, profile.py's setup handling, buzz-backend-kubernetes's setup binding and pod UID, and test-setup.py; - OpenPGP commit signing through a forwarded GPG agent (buzz-gpg): Git signs only with the profile's agent SSH key; - the workstation profile.py enroll command and the interactive buzz-agent-account github, via, via-profile and depot helpers; - buzz-backend-kubernetes in the GPUI package, and the remote workspace type key named after it: it is now voltage.remote-workspace/sandbox.
Registering the key with the GitHub token needed Account permissions → SSH signing keys: write on a token that every Sandbox holds, so an agent could add or delete signing keys. Register the key with the developer's local GitHub CLI instead, after the manager stores the profile and after checking gh is signed in to the token's account. When gh cannot, the form shows why, the public key with a Copy key button, and the steps to add it as a Signing Key. The agents' token needs no account permission.
How Remote workspace agents work, with diagrams of the components, the enrollment, and a session; where each credential lives; how an admin onboards a developer and how a developer sets up agents, including the 1Password service account and the agents' signing key; what an agent can reach; and troubleshooting by the message the developer sees.
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October 22, 2026 20:46
The merge-base changed after approval.
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thebrandonlucas
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What
This makes the Remote workspace flow the one way developers run agents in a staging Sandbox. They need only their Buzz key and the accounts they enroll once, and every commit an agent makes is signed and verified. Remote agents are new, with one user so far, so there is no compatibility path: what the relay flow replaced is removed.
Per-agent settings: Harness, Model, Effort, Fast mode, Instructions, Environment
config::MANAGER_PUBKEY) on its community. The Kubernetes provider is gone from the type.claude-opus-5-5for Claude Code, or an OpenRouter model ID for Buzz agent.BUZZ_ACP_EFFORT_LEVEL.BUZZ_ACP_FAST_MODE.Enroll form, once per developer: GitHub token, Git email, via profile, 1Password token, model credentials
Git email is prefilled from
git config --global user.email.Enrolling (
remote_workspace::enroll::run) does four steps in order:GET /user) forgithub.loginand the Git author;ssh-keygen;git.ssh_signing_key;gh api --method POST /user/ssh_signing_keys), after checking thatghis signed in to the token's account;ghisn't installed, isn't signed in, or lacks theadmin:ssh_signing_keyscope.The agents' GitHub token, which goes into every Sandbox, needs no account permission. Only
ghon the developer's own machine ever changes their signing keys.The developer ID is left empty. The manager fills it in from the signing owner's entry.
Manager (
buzz-sandbox-reaper)developerfrom the signing owner's developer entry.profile.rsfollowsprofile.py:gitis{name, email, ssh_signing_key}, where the key is one OpenSSH private key block.Agent image
.config/buzz-agent/ssh-signing-key(0600, excluded from checkpoints).buzz-agent-account initsetsgpg.format sshwithcommit.gpgsignandtag.gpgsign. Without the key, Git refuses to commit.buzz-acpappliesBUZZ_ACP_FAST_MODElike effort, on each new session through the model's fast-mode option (claude-agent-acpfast, codex-acpfast-mode). Models without the option are skipped.Removed
setup.js, the entrypoint branch,profile.py's setup handling,buzz-backend-kubernetes's setup binding (configure_setup,setup_pending), andtest-setup.py.gpg.sh/buzz-gpg).profile.py enrollcommand, and the interactivebuzz-agent-account github|via|via-profile|depothelpers.buzz-backend-kubernetesfrom the GPUI package. The flake now builds onlybuzz-backend-relay.voltage.remote-workspace/kubernetestovoltage.remote-workspace/sandbox. Existing agents of the old key change type again once, under Settings → Provider.Docs
voltage/remote-agents.mdis a new guide to share with the team. It covers:Tested
buzz-gpuiwithvoltage-sandbox: 1062 passed, 2 ignored. Covers the new enroll fields and profile shape, the GitHub identity parsing, theghfailure reasons, effort and fast mode in the launch, and the manager and relay fixed per community.buzz-sandbox-reaper: 90 passed. Covers the SSH key rule and the developer ID fill-in.buzz-acp: 1092 passed. Covers fast-mode option discovery and values.buzz-backend-kubernetes: 227 passed.buzz-backend-relay: 9 passed.profile.pychecked locally against a realssh-keygenkey: accepted with and without a final newline. An OpenPGP fingerprint and the oldsigning_keyfield are refused.test-accounts.pysigns a commit with a fresh SSH key, verifies it against the public key, and checks that a missing key refuses the commit;test-profile.pyseeds the profile as the manager stores it, and addsmixed-codexandgpg-fingerprintrefusals.Deploy
After merge, the image workflow publishes new agent and reaper images. Then:
agent_image(voltage-terraform);