crow_shiori_list

THE RISK

Low Risk

Why crow_shiori_list needs a policy

The tool performs a read-only query to retrieve paginated bookmark data from Shiori. No data is created, modified, deleted, or executed. This is a straightforward data retrieval operation with minimal security risk, suitable for the 'Read' category at low severity.

From the tool's definition Tool name 'crow_shiori_list' and description 'List Shiori bookmarks with pagination' indicate a retrieval operation that queries stored bookmarks without modifying or executing any operations.

Documented attack patterns abuse exactly the kind of access crow_shiori_list gives an agent:

POLICY

How to control crow_shiori_list

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_shiori_list:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "crow_shiori_list": {}
  }
}

crow_shiori_list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Crow — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about crow_shiori_list

What does the crow_shiori_list tool do? +

List Shiori bookmarks with pagination. It is categorised as a Read tool in the Crow MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on crow_shiori_list? +

Register the Crow MCP server in PolicyLayer and add a rule for crow_shiori_list: 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.

What risk level is crow_shiori_list? +

crow_shiori_list is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit crow_shiori_list? +

Yes. Add a rate_limit block to the crow_shiori_list 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.

How do I block crow_shiori_list completely? +

Set action: deny in the PolicyLayer policy for crow_shiori_list. 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.

What MCP server provides crow_shiori_list? +

crow_shiori_list 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.

Enforce policy on every Crow tool call.

Start from Crow, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →