Rolls back a variable to a previous version
AI agents use rollback_variable to create or update resources in Keyshade — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Keyshade environment.
A rollback operation modifies data by reverting a variable to a prior state. This is a Write operation (reversible modification) rather than Destructive, since the current version exists and the action restores a previous known state. However, it could overwrite the current value, making it medium severity as misuse could cause unintended configuration changes.
From the tool's definition Rolls back a variable to a previous version
Documented attack patterns abuse exactly the kind of access rollback_variable gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Keyshade, and nothing reaches the server without passing your rules. This is the rule we recommend for rollback_variable:
{
"version": "1",
"default": "deny",
"tools": {
"rollback_variable": {
"limits": [
{
"counter": "rollback_variable_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}rollback_variable 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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Rolls back a variable to a previous version. It is categorised as a Write tool in the Keyshade MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Keyshade MCP server in PolicyLayer and add a rule for rollback_variable: 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 Keyshade. Nothing to install.
rollback_variable 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 rollback_variable 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 rollback_variable. 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.
rollback_variable is provided by the Keyshade MCP server (keyshade-xyz/keyshade-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Keyshade, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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