Close a browser tab by its ID, or close the currently active tab if no ID is specified. Use when the user wants to close a popup, remove an unwanted tab, or clean up after finishing work in a tab. Parameters: - id: Tab ID to close (omit to close the current active tab). Use pilot_tabs to list tab...
AI agents use pilot_tab_close to create or update resources in Pilot — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Pilot environment.
An AI agent can call pilot_tab_close faster than any human can review — one bad instruction and it creates or modifies resources in Pilot by the hundred, each call as confident as the last.
Documented attack patterns abuse exactly the kind of access pilot_tab_close gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Pilot, and nothing reaches the server without passing your rules. This is the rule we recommend for pilot_tab_close:
{
"version": "1",
"default": "deny",
"tools": {
"pilot_tab_close": {
"limits": [
{
"counter": "pilot_tab_close_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}pilot_tab_close stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Close a browser tab by its ID, or close the currently active tab if no ID is specified. Use when the user wants to close a popup, remove an unwanted tab, or clean up after finishing work in a tab. Parameters: - id: Tab ID to close (omit to close the current active tab). Use pilot_tabs to list tab IDs. Returns: Confirmation that the tab was closed. Errors: -. It is categorised as a Write tool in the Pilot MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Pilot MCP server in PolicyLayer and add a rule for pilot_tab_close: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Pilot. Nothing to install.
pilot_tab_close is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the pilot_tab_close rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for pilot_tab_close. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
pilot_tab_close is provided by the Pilot MCP server (tacosyhorchata/pilot). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 61 Pilot tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
61 Pilot tools catalogued and risk-classified — across an index of 42,500+ MCP servers.