Gemini Spark

Incomplete and not restorable in one action: skills download and re-upload as .zip files, but tasks, schedules, remote computer state and credentials have no export or import, so the Spark agent itself cannot be restored.

• Create & manage skills for Gemini Apps
• Download your Gemini Apps data

Skill downloads include instructions and files, and Takeout covers chats, media and uploads, but tasks, schedules, remote computer files, remote browser cookies, Connected App credentials and personal context are not documented as exportable.

• Create & manage skills for Gemini Apps
• Download your Gemini Apps data

Spark runs on Gemini 3.5 with Google's Antigravity harness on Google-hosted remote browsers and computers; no open-source runtime can run it without Google servers.

• Google Blog: The Gemini app becomes more agentic
• Use Gemini Spark to manage your tasks & workflows

Spark is bound to the owner's personal Google Account, and nothing lets peers verify its continuity outside Google.

• Use Gemini Spark to manage your tasks & workflows

The functioning agent exists only on Google infrastructure and depends on an active Pro/Ultra subscription and Keep Activity; exported skills are files, not an executable agent.

• Use Gemini Spark to manage your tasks & workflows

Schedules, triggers, remote browsing, code execution and Connected Apps are delivered by Google's platform on Gemini models, with no documented way to keep them on another model. Skills use the portable SKILL.md format but rely on Spark to execute.

• Use Gemini Spark to manage your tasks & workflows
• Create & manage skills for Gemini Apps

Skills are markdown and ordinary code/config files, and Takeout exports activity in a .zip/.tgz archive. Storage of tasks, schedules and remote computer state is undocumented and reachable only through Google's software.

• Create & manage skills for Gemini Apps
• Download your Gemini Apps data

Skill instructions are visible, but Google does not publish Spark's system instructions or the context it injects from Personal Intelligence and Connected Apps.

• Create & manage skills for Gemini Apps
• Gemini Apps Privacy Hub

Spark data follows Gemini retention rules: chats selected for human review are kept up to three years, disconnected from the account, beyond the owner's deletion.

• Gemini Apps Privacy Hub

Task threads show planned, current and completed steps, and task activity is stored in Gemini Apps Activity, but no complete record of tool calls is documented, and Spark task steps are not documented as part of the Takeout export.

• Find & manage your Gemini Spark tasks
• Use Gemini Spark / Agent for multi-step tasks

Skills are human-readable markdown and can include .py and .sh scripts, but the Antigravity harness and task orchestration are closed source.

• Create & manage skills for Gemini Apps
• Google Blog: The Gemini app becomes more agentic

Google states Gemini Apps chats are not used to show ads and the app shows none. There is no binding commitment to keep Spark ad-free.

• Gemini Apps Privacy Hub
• Search Engine Land: Google denies ads are coming to Gemini in 2026

Google does not document whether every consequential Spark action is durably recorded, or whether an action is blocked when it cannot be recorded.

• Use Gemini Spark to manage your tasks & workflows

Task threads and their activity can be deleted without a detectable trace, and no tamper-evident record is documented.

• Find & manage your Gemini Spark tasks

Google does not document whether the agent, which can save files and run code on its remote computer, can alter or delete records of its own actions.

• Gemini Apps Privacy Hub

Takeout exports Gemini Apps activity in readable archives, but it is an activity export, and Spark task steps are not documented as included.

• Download your Gemini Apps data

No exchanges with other agents whose records each side could match against the other's are documented for Spark.

• Use Gemini Spark to manage your tasks & workflows

The Spark runtime and Antigravity harness as hosted by Google are proprietary; no OSI-licensed, reproducible runtime is published.

• Google Blog: The Gemini app becomes more agentic

System instructions and injected personal context are not published, so the active configuration cannot be compared with what the owner can inspect.

• Gemini Apps Privacy Hub

Spark sends through the owner's Google and connected accounts, so recipients cannot verify that messages came from this agent under the owner's authority.

• Use Gemini Spark to manage your tasks & workflows

No action record is offered whose integrity can be checked with open tools that do not depend on Google.

• Download your Gemini Apps data

Remote computer, task and server-side state are not fully exposed, so the owner cannot verify whether the agent's state changed between two points in time.

• Use Gemini Spark to manage your tasks & workflows

Owners can edit skill descriptions and instructions directly or conversationally, but cannot read or rewrite Spark's system instructions.

• Create & manage skills for Gemini Apps

Owners can delete tasks with their activity and bulk-delete remote computer and browser data, but no item-level viewer or editor for derived memory or saved remote state is documented.

• Find & manage your Gemini Spark tasks
• Use Gemini Spark to manage your tasks & workflows

Owners can create, edit, upload and delete skills including .py and .sh scripts (without internet access), and set schedules. The harness and orchestration logic cannot be changed.

• Create & manage skills for Gemini Apps

Owners can enable, disable and remove Connected Apps and add custom MCP servers. Custom apps are limited to US adults with personal accounts, English and Keep Activity on, and write actions require confirmation.

• Connect & manage custom apps for Gemini Spark

Spark runs on Google's Gemini 3.5; third-party or local open-weight models cannot be selected.

• Google Blog: The Gemini app becomes more agentic

Spark and skills require a paid Google AI Pro or Ultra subscription, an eligible region and Keep Activity on; custom apps are further limited to the US.

• Use Gemini Spark to manage your tasks & workflows
• Connect & manage custom apps for Gemini Spark

Owners choose which apps to connect, and Spark asks before sending communications, but owners cannot set which recipients or channels it may contact, no enforcement below the model is documented, and Google notes Spark may share chat information with websites and custom apps.

• Connect & manage custom apps for Gemini Spark
• Use Gemini Spark / Agent for multi-step tasks

Spark prompts for confirmation before sending communications, modifying data, purchases and submitting web forms. The gated categories are set by Google rather than selected by the owner, and enforcement cannot be independently verified.

• Use Gemini Spark to manage your tasks & workflows

Owners can stop a running task at any time with the Stop button, and deleting a task also removes its schedules.

• Use Gemini Spark / Agent for multi-step tasks
• Find & manage your Gemini Spark tasks

Spark runs entirely on Google servers and requires Keep Activity on, under which chats are used to improve Google models and a subset is human-reviewed; there is no opt-in for training.

• Gemini Apps Privacy Hub
• Use Gemini Spark to manage your tasks & workflows

Remote browser authentication cookies and Connected App and MCP credentials are held in Google's service; owners can delete or disconnect them, but they are not inspectable and do not travel with an export.

• Gemini Apps Privacy Hub
• Connect & manage custom apps for Gemini Spark

Owners can delete tasks, skills, remote computer and browser data, Gemini Apps activity or the Google Account, but chats reviewed by humans are retained up to three years.

• Find & manage your Gemini Spark tasks
• Gemini Apps Privacy Hub
• Delete your Google Account