update_reading_progress · Readbook MCP Server MCP

WHAT IT DOES

What update_reading_progress does on Readbook MCP Server

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

WHY IT NEEDS A POLICY

Why update_reading_progress needs a policy

This tool creates or modifies reading progress records—a form of user metadata—reversibly. Users can update their progress multiple times, and changes do not have destructive side effects. It aligns with the Write category as it updates application state without executing code, deleting data, or incurring financial obligations.

From the tool's definition Tool name 'update_reading_progress' and description '更新书籍的阅读进度' (update book reading progress) indicate modification of user reading state data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_reading_progress Rate-limited

update_reading_progress 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": {
    "update_reading_progress": {
      "limits": [
        {
          "counter": "update_reading_progress_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Readbook MCP Server, so you can run agents against it safely.

FAQ

Questions about update_reading_progress

What does the update_reading_progress tool do? +

更新书籍的阅读进度. It is categorised as a Write tool in the Readbook 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 update_reading_progress? +

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

What risk level is update_reading_progress? +

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

Can I rate-limit update_reading_progress? +

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

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

update_reading_progress is provided by the Readbook MCP Server MCP server (mkafw/readbook-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.