readwise_daily_review · Readwise MCP Server MCP

WHAT IT DOES

What readwise_daily_review does on Readwise MCP Server

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

WHY IT NEEDS A POLICY

Why readwise_daily_review needs a policy

The tool both reads data (fetches today's highlights) and writes data (saves to Daily Reviews directory). Since it performs a write/save operation, Write is the appropriate category. The severity is medium because it creates files on the filesystem, but the operation is reversible and the blast radius is limited to the local Daily Reviews directory.

From the tool's definition 'Fetch today's highlights and save to Daily Reviews directory'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

readwise_daily_review Rate-limited

readwise_daily_review 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": {
    "readwise_daily_review": {
      "limits": [
        {
          "counter": "readwise_daily_review_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 Readwise MCP Server, so you can run agents against it safely.

FAQ

Questions about readwise_daily_review

What does the readwise_daily_review tool do? +

Fetch today's highlights and save to Daily Reviews directory. It is categorised as a Write tool in the Readwise 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 readwise_daily_review? +

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

What risk level is readwise_daily_review? +

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

Can I rate-limit readwise_daily_review? +

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

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

readwise_daily_review is provided by the Readwise MCP Server MCP server (ngpestelos/readwise-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.