crow_glasses_undo_last_append
Remove the most recently appended line from an active glasses note session. Use when the user says
This record as markdown: /tools/kh0pper-crow/crow-glasses-undo-last-append.md
What crow_glasses_undo_last_append does on Crow
AI agents call crow_glasses_undo_last_append to permanently remove resources in Crow, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why crow_glasses_undo_last_append is rated Critical
This tool removes/deletes data (the most recently appended line) from a note session. While it could be argued this is a limited undo operation, the action irreversibly removes content from the session. The blast radius is medium since it only affects the last appended line in a note session, not broader data.
From the tool's definition Remove the most recently appended line from an active glasses note session
Attacks that exploit this kind of access
The rule that runs crow_glasses_undo_last_append safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Crow, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For crow_glasses_undo_last_append, this is the rule to start with:
crow_glasses_undo_last_append is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Crow, apply this rule, and every crow_glasses_undo_last_append call is checked against it from then on.
Questions about crow_glasses_undo_last_append
Remove the most recently appended line from an active glasses note session. Use when the user says. It is categorised as a Destructive tool in the Crow MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Crow MCP server in PolicyLayer and add a rule for crow_glasses_undo_last_append: 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 Crow. Nothing to install.
crow_glasses_undo_last_append is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the crow_glasses_undo_last_append 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 crow_glasses_undo_last_append. 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.
crow_glasses_undo_last_append is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Crow, and thousands of servers like it.
Across the catalogue