Begin a note-taking session. Mode selection is NOT optional — pick based on user intent:
AI agents use crow_glasses_start_note_session to create or update resources in Crow — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Crow environment.
Starting a note session creates persistent state/data in the system. It is a Write operation as it initializes a new session record. Severity is medium because misuse could create unwanted sessions or consume resources, but it is reversible.
From the tool's definition Begin a note-taking session — creates/initializes a new session state
Documented attack patterns abuse exactly the kind of access crow_glasses_start_note_session gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Crow, and nothing reaches the server without passing your rules. This is the rule we recommend for crow_glasses_start_note_session:
{
"version": "1",
"default": "deny",
"tools": {
"crow_glasses_start_note_session": {
"limits": [
{
"counter": "crow_glasses_start_note_session_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}crow_glasses_start_note_session 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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Begin a note-taking session. Mode selection is NOT optional — pick based on user intent:. It is categorised as a Write tool in the Crow MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Crow MCP server in PolicyLayer and add a rule for crow_glasses_start_note_session: 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_start_note_session 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 crow_glasses_start_note_session 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_start_note_session. 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_start_note_session 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.
Start from Crow, 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.
576 Crow tools catalogued and risk-classified — across an index of 43,000+ MCP servers.