mark_msg_as_read

Mark message as read

SERVERNapCat MCP Server SOURCE1021143806/napcat_mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/1021143806-napcat-mcp/mark-msg-as-read.md

WHAT IT DOES

What mark_msg_as_read does on NapCat MCP Server

AI agents use mark_msg_as_read to create or update resources in NapCat MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your NapCat MCP Server environment.

RISK

Why mark_msg_as_read is rated Medium

This tool changes the read status of a message, which is a data modification but not destructive (the message itself is not deleted or overwritten). It's reversible—messages can be marked as unread again. The operation has minimal blast radius as it only affects message metadata state without affecting core data or external systems.

From the tool's definition Tool name 'mark_msg_as_read' and description 'Mark message as read' indicate a state change operation that modifies message read status, which is a reversible write operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mark_msg_as_read safely

PolicyLayer is an MCP gateway: it sits between your AI agents and NapCat MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For mark_msg_as_read, this is the rule to start with:

mark_msg_as_read Rate-limited

mark_msg_as_read 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "mark_msg_as_read": {
      "limits": [
        {
          "counter": "mark_msg_as_read_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect NapCat MCP Server, apply this rule, and every mark_msg_as_read call is checked against it from then on.

FAQ

Questions about mark_msg_as_read

What does the mark_msg_as_read tool do? +

Mark message as read. It is categorised as a Write tool in the NapCat MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on mark_msg_as_read? +

Register the NapCat MCP Server MCP server in PolicyLayer and add a rule for mark_msg_as_read: 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 NapCat MCP Server. Nothing to install.

What risk level is mark_msg_as_read? +

mark_msg_as_read is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit mark_msg_as_read? +

Yes. Add a rate_limit block to the mark_msg_as_read 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 mark_msg_as_read completely? +

Set action: deny in the PolicyLayer policy for mark_msg_as_read. 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 mark_msg_as_read? +

mark_msg_as_read is provided by the NapCat MCP Server MCP server (1021143806/napcat_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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