Personal account requests stopped working: migrate from Gemini CLI to Antigravity CLI now. Enterprise license and paid API users can keep Gemini CLI temporarily, but should run a one-week dual-track test before making a full switch.

This guide is for developers whose daily terminal workflow depends on Gemini CLI, advanced users maintaining Skills, MCP Servers, Hooks, or automation scripts, and engineering leads responsible for remote Mac environments, authentication, privacy, cost, and rollback.

Last updated August 15, 2026. Sources checked: the official transition announcements, migration guidance, Antigravity CLI repository, and permission documentation.

Start with the account decision

The service change took effect on June 18, 2026. Gemini CLI stopped serving requests for free-tier individual accounts and individual accounts using Google AI Pro or Google AI Ultra. Enterprise users with supported Gemini Code Assist licenses and users authenticating with paid API keys were not affected in the same way. The official announcement directs affected individual users toward Antigravity CLI. (Official individual-account transition announcement)

Do not treat this as a complete shutdown for every Gemini CLI user. The open-source project remains available, and enterprise or API-based access follows a different support path. The correct action depends on how your account authenticates.

Your access path Immediate decision Recommended operating mode
Free individual account Migrate Move to Antigravity CLI and keep the old configuration archived
Google AI Pro or Ultra individual account Migrate Validate imported assets before deleting Gemini CLI settings
Enterprise Gemini Code Assist license Do not rush Keep Gemini CLI while testing Antigravity CLI in parallel
Paid API authentication Do not rush Compare API behavior, headless jobs, quotas, and policy controls
Mixed team environment Stage the change Separate personal, enterprise, and API workflows before rollout

Fast rule: if your workflow depends on personal-account authentication, waiting is not a continuity plan.

The transition announcement states that Antigravity CLI is intended to preserve important workflow concepts such as Agent Skills, Hooks, Subagents, and Extensions. That does not mean every custom script is behaviorally compatible. A renamed feature can still change its configuration format, permission model, output, or failure behavior. (Official transition announcement)

Before installation, inventory the workflow

Do not start with a blind installation on your production Mac. First create a migration inventory. The goal is to distinguish portable project knowledge from executable automation.

1. Back up the existing state

Create a read-only copy of:

  • Gemini CLI configuration files.
  • Project memory files such as GEMINI.md.
  • Custom Skills.
  • MCP Server definitions.
  • Agent profiles.
  • Hooks.
  • Shell wrappers and aliases.
  • Headless or CI scripts.
  • Environment variable files.
  • Authentication notes and team runbooks.

Keep the backup outside the active configuration directory. Do not overwrite it during the first launch of Antigravity CLI.

The official transition notice says that existing Gemini CLI directories can be detected and that Skills, MCP Servers, Agents, and compatible memory files can be imported. Treat this as an import opportunity, not as proof that every execution path will work unchanged. (Official migration announcement)

2. Classify assets by migration risk

Asset Expected migration approach What you must verify
Project memory Import or reuse compatible memory files The agent still reads the intended project rules
Skills Automatic import or explicit conversion Trigger conditions, paths, and instructions
MCP Servers Import configuration Command path, environment variables, network access, and tool names
Agents Import profiles where supported Model selection, prompts, permissions, and output format
Hooks Manual review Event names, shell syntax, exit codes, and confirmation behavior
Headless scripts Rebuild or adapt Non-interactive login, output stability, exit status, and retries
CI jobs Parallel validation Secrets, logs, timeouts, and deterministic failure handling
Custom extensions Explicit migration review Plugin structure and unsupported APIs

The highest-risk items are not the files that are easiest to see. They are the scripts that run without a person watching the terminal. A first-launch wizard can import a directory while leaving a CI job unable to authenticate or parse output.

3. Record the rollback condition

Write down a concrete rollback rule before testing:

If a required MCP call, headless task, permission check, or build validation fails twice in the same clean test environment, stop the migration and restore the archived Gemini CLI configuration.

This prevents a common failure mode: changing the tool, changing the prompt, changing the permissions, and then losing the ability to identify which change caused the break.

Answer the automatic-import question during the first launch

Antigravity CLI can detect the local Gemini CLI directory during installation and offer to migrate configuration assets. The official notice specifically lists Skills, MCP Servers, Agents, and compatibility with existing gemini.md project memory files. (Official individual-account transition announcement)

The import still needs verification.

Use a clean test repository

Create a small repository containing:

  • One project memory instruction.
  • One harmless Skill.
  • One local MCP Server.
  • One agent profile.
  • One file-edit task.
  • One command that prints a known value.

Then launch Antigravity CLI inside that repository. Confirm each asset separately. Do not test everything with one large prompt because a successful final answer does not prove that every component was loaded.

Check these points:

  1. Does the tool identify the correct workspace root?
  2. Does it read the expected project memory file?
  3. Does the Skill activate only when its trigger applies?
  4. Does the MCP Server start with the expected environment?
  5. Does the Agent use the intended profile?
  6. Does a file modification require the expected confirmation?
  7. Does the command result appear in the session history?
  8. Does a failed command return a usable error rather than silently continue?

The official repository describes Antigravity CLI as a terminal interface for codebase understanding, file edits, command execution, and agent workflows. It also documents an agy executable and a migration-oriented installation path. Verify the current installation instructions in the repository before running a shell installer. (Official Antigravity CLI repository)

Migration warning: Never delete the old configuration after the first successful prompt. “The agent answered” is not the same as “the workflow migrated.”

Use the first day for a controlled task comparison

The first day should compare workflows, not marketing feature lists. Use the same repository and the same task sequence in Gemini CLI and Antigravity CLI where your account type permits both.

A suitable test sequence is:

  1. Ask both tools to explain the same unfamiliar module.
  2. Request a change across multiple files.
  3. Ask for a command to run the relevant tests.
  4. Review the generated diff manually.
  5. Introduce a deliberate test failure.
  6. Ask the agent to diagnose and repair it.
  7. Start a background or long-running task if your workflow needs one.
  8. Disconnect and reconnect the terminal.
  9. Resume the session or repeat the task from a clean state.
  10. Record every point where you had to take manual control.

Do not publish speed, success-rate, token-use, or resource-consumption claims without a dated test record. This article does not present those figures because no MACCOME migration benchmark was supplied.

What enterprise and API users should compare

Enterprise and paid API users have a reason to delay a forced migration. The official announcement says those access paths remain supported. That gives you time to compare:

  • Authentication flow.
  • API project selection.
  • Headless execution.
  • JSON or machine-readable output.
  • MCP permissions.
  • Audit and logging requirements.
  • Quota behavior.
  • Failure recovery.
  • Team onboarding.
  • Existing policy files.

The key question is not whether Antigravity CLI can complete one interactive coding task. The question is whether it can complete your least supervised task without creating a new operational risk.

Separate capability from policy

A tool may be capable of running a command while your security policy should still deny it. Review every command, file, network, and MCP permission before broadening access.

For a team, create two records:

  • Capability result: what the tool technically did.
  • Policy result: whether your organization allows that action.

This distinction matters for remote development. A terminal agent with broad file and network access can be productive and still fail a security review.

Validate macOS, SSH, and the delivery loop

Antigravity CLI is positioned for terminal and remote workflows, but your environment still determines whether the migration is useful. On macOS, verify local login, system keychain behavior, shell startup files, file permissions, and access to the project directory. In remote SSH sessions, verify how authentication is completed when the browser is not running on the remote host.

The official repository describes local browser-based sign-in and a remote or SSH authorization flow that lets you complete login locally. Treat that as a workflow to test, not a reason to skip testing. (Antigravity CLI authentication details)

Run these checks in order:

  1. Log in on the local Mac.
  2. Confirm the credential is stored in the expected system mechanism.
  3. Open a new terminal and verify the session remains authenticated.
  4. Connect through SSH to the target Mac.
  5. Start Antigravity CLI from the project root.
  6. Complete any remote authorization step using the documented method.
  7. Run a read-only repository inspection.
  8. Run a controlled file-edit task.
  9. Execute the project’s normal test command.
  10. Disconnect SSH and reconnect.
  11. Confirm whether session history, permissions, and authentication behave as expected.
  12. Remove temporary test credentials and logs.

Include Xcode in acceptance testing

If your workflow supports Apple-platform development, a terminal migration is incomplete until the code passes the full Mac delivery loop:

  • Dependency resolution.
  • Xcode build.
  • Unit tests.
  • UI tests where applicable.
  • Signing and provisioning checks.
  • Archive or export validation.
  • Review of modified files.

A terminal agent can edit Swift files successfully while the actual project still fails because of a build setting, signing identity, simulator state, or generated file. Keep Xcode validation separate from the agent’s own claim that the change is complete.

Review the security boundary

Check whether the new workflow changes:

  • Where credentials are stored.
  • Which shell commands can run without confirmation.
  • Which directories are writable.
  • Whether MCP tools can reach external services.
  • Whether logs contain source code or secrets.
  • Whether remote sessions expose authorization URLs.
  • Whether project memory files can instruct unsafe actions.

Do not disable all confirmations merely to make the interface feel faster. A confirmation prompt is an operational control. Remove it only after the affected command class has been reviewed and accepted.

Count the real migration cost

The visible software cost is only one part of the decision. Even if a tool has a free access tier or an existing subscription route, you still pay in engineering time, test environments, policy review, and failure recovery.

Cost area Personal developer Enterprise or API user
Account access Migration is required for continuity Existing access may remain available
Configuration work Backup, import review, and local validation Parallel configuration and team policy review
Automation work Recheck scripts before reuse Rebuild CI and headless jobs if output changes
Security work Review credentials, MCP, and shell permissions Add audit, approval, and governance checks
Mac environment Required for local and Xcode validation Useful for remote build and acceptance testing
Rollback cost Usually manageable with one archived profile Can include team-wide deployment reversal
Best decision Migrate in a controlled sequence Dual-track first, then choose based on evidence

Do not copy a price from an old article into your migration plan. Antigravity CLI plans, usage limits, API rates, and account entitlements can change. Check the current official account or product documentation on the day you approve the budget.

Also include the indirect costs:

  • Rewriting shell wrappers.
  • Updating onboarding documents.
  • Retesting MCP integrations.
  • Revalidating secrets handling.
  • Training the team on permission prompts.
  • Maintaining two tools during the trial.
  • Recovering from a failed automated task.
  • Keeping a usable Mac or remote Mac available for testing.

For temporary migration work, a remote Mac can be more practical than purchasing hardware before you know whether the new workflow is stable. You can review remote Mac environment options and choose a test window that covers installation, SSH, build verification, and rollback rather than paying for an untested long-term setup.

Decide after one week, not after one prompt

Use the first week to classify your result into one of three outcomes.

Full migration

Choose this when:

  • Personal-account access is no longer viable.
  • Configuration import is complete.
  • Required MCP Servers work.
  • Skills and project memory behave correctly.
  • Headless tasks pass.
  • SSH login is repeatable.
  • Permissions match your policy.
  • Xcode builds and tests pass where required.
  • Rollback files are archived.

For personal developers, this should be the default path. Staying on the old authentication route does not restore service continuity.

Controlled dual-track operation

Choose this for enterprise or paid API users when both tools still work and the migration has unresolved compatibility questions.

Set a fixed review date. Define which jobs stay on Gemini CLI and which jobs run on Antigravity CLI. Do not let dual-track operation become an undocumented permanent state.

Track:

  • Manual intervention count.
  • Failed task recovery.
  • MCP errors.
  • Authentication interruptions.
  • Permission exceptions.
  • Build and test outcomes.
  • Team support requests.
  • Changes required in scripts.

Rollback and defer

Choose this when a critical task fails and there is no safe workaround. Keep Gemini CLI on the supported enterprise or API path, archive the Antigravity CLI test state, and document the exact blocker.

Do not roll back by deleting random directories. Restore the known-good configuration, revoke temporary credentials if needed, and rerun one small verification task.

Complete the formal migration checklist

Before declaring the move complete, confirm every item:

  • [ ] Account type and authentication path are documented.
  • [ ] Existing Gemini CLI configuration is archived.
  • [ ] Skills were imported and individually triggered.
  • [ ] MCP Servers were tested with real but low-risk calls.
  • [ ] Agents and project memory were checked.
  • [ ] Hooks were reviewed manually.
  • [ ] Headless scripts were executed in a clean environment.
  • [ ] CI credentials and output parsing were validated.
  • [ ] macOS login and keychain behavior were checked.
  • [ ] SSH authorization was tested after reconnecting.
  • [ ] Shell, file, network, and MCP permissions were reviewed.
  • [ ] Xcode build, signing, and test steps passed where applicable.
  • [ ] Logs were checked for source code and secrets.
  • [ ] A rollback copy and rollback owner were assigned.
  • [ ] The team knows which tool is authoritative after the cutover.

The migration is complete only when the workflow, not just the binary, has passed acceptance.

Choose the Mac environment that matches the test

Your current setup may be the hidden blocker. A local Mac is convenient, but it may be unavailable to teammates, difficult to keep online for SSH, or unsuitable for a short migration experiment. A remote Mac can provide a repeatable environment for terminal login, agent execution, Xcode validation, and disconnect recovery.

That does not make remote access the right answer for every team. If you need permanent heavy workloads, physical peripherals, or tightly controlled local credentials, buying and managing dedicated hardware may be better. If you only need a temporary validation environment, a rental Mac can avoid committing to hardware before the migration decision is settled.

For a short test cycle, compare the Mac mini rental setup with a region-specific option such as the Virginia Mac environment. The important criteria are not a claimed benchmark. They are whether you can keep the same repository, authentication method, SSH path, build tools, and rollback procedure throughout the test.

Your existing setup may be the wrong long-term plan if it has three recurring weaknesses: personal-account authentication has already failed, automation depends on undocumented compatibility, and the Mac environment cannot stay available for remote verification. Renting through MACCOME is more suitable when you need a controlled Mac workspace for a migration window, especially before deciding whether permanent hardware is justified.

Start with one real project, run the one-week dual-track test, and keep the old configuration until every acceptance item passes. If your current device cannot provide stable macOS, SSH, and Xcode validation, prepare a temporary remote Mac environment before making the final cutover.