AI agents use import_skill to create or update resources in Forgetful — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Forgetful environment.
The tool most likely creates or integrates skill data into the persistent knowledge base (consistent with 'import' semantics and the server's purpose). This is reversible via delete_skill, making it Write rather than Destructive. Confidence is moderate due to the empty description; an explicit description confirming it persists or modifies knowledge base state would strengthen the classification.
From the tool's definition Tool name 'import_skill' on a knowledge base server alongside create_skill and delete_skill, suggesting it adds or modifies stored skill records. The empty description provides no direct confirmation of semantics or side effects.
Documented attack patterns abuse exactly the kind of access import_skill gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Forgetful, and nothing reaches the server without passing your rules. This is the rule we recommend for import_skill:
{
"version": "1",
"default": "deny",
"tools": {
"import_skill": {
"limits": [
{
"counter": "import_skill_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}import_skill 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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import_skill. It is categorised as a Write tool in the Forgetful MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Forgetful MCP server in PolicyLayer and add a rule for import_skill: 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 Forgetful. Nothing to install.
import_skill 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 import_skill 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 import_skill. 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.
import_skill is provided by the Forgetful MCP server (scottrbk/forgetful). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 59 Forgetful tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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59 Forgetful tools catalogued and risk-classified — across an index of 42,500+ MCP servers.