AI agents use revert_edit to create or update resources in Largefile — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Largefile environment.
Revert operations modify file content by changing it back to a previous state. This is reversible (can be re-reverted) and does not permanently destroy data, so it is Write rather than Destructive.
From the tool's definition Tool name 'revert_edit' suggests undoing a previous edit operation. Sibling tools include 'edit_content', confirming this server handles file modification.
Documented attack patterns abuse exactly the kind of access revert_edit gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Largefile, and nothing reaches the server without passing your rules. This is the rule we recommend for revert_edit:
{
"version": "1",
"default": "deny",
"tools": {
"revert_edit": {
"limits": [
{
"counter": "revert_edit_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}revert_edit 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.
Free to start. No card required.
revert_edit. It is categorised as a Write tool in the Largefile MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Largefile MCP server in PolicyLayer and add a rule for revert_edit: 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 Largefile. Nothing to install.
revert_edit 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 revert_edit 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 revert_edit. 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.
revert_edit is provided by the Largefile MCP server (peteretelej/largefile). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Largefile, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
8 Largefile tools catalogued and risk-classified — across an index of 43,000+ MCP servers.