get_book

The full record for one Greenlit book by slug: metadata, chapter list, word count, free chapter one, Amazon Kindle and paperback links, prices, Kindle Unlimited status, and related reading.

SERVERGreenlit Books SOURCEhttps://greenlitbooks.com/api/mcp

Low RISK CLASS

Category Read

Parameters 11 required

Recommended Allowedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/com-greenlitbooks-catalog/get-book.md

WHAT IT DOES

What get_book does on Greenlit Books

AI agents call get_book to retrieve information from Greenlit Books without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`slug`	string	Yes	The book slug, e.g. claude-code-in-action.

Parameters from the server's own tool schema.

RISK

Why get_book is rated Low

Even though get_book only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_book safely

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

get_book Allowed

get_book is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Greenlit Books, apply this rule, and every get_book call is checked against it from then on.

FAQ

Questions about get_book

What does the get_book tool do? +

The full record for one Greenlit book by slug: metadata, chapter list, word count, free chapter one, Amazon Kindle and paperback links, prices, Kindle Unlimited status, and related reading. It is categorised as a Read tool in the Greenlit Books MCP Server, which means it retrieves data without modifying state.

What parameters does get_book accept? +

get_book accepts 1 parameter: slug. Required: slug. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on get_book? +

Register the Greenlit Books MCP server in PolicyLayer and add a rule for get_book: 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 Greenlit Books. Nothing to install.

What risk level is get_book? +

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

Can I rate-limit get_book? +

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

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

get_book is provided by the Greenlit Books MCP server (https://greenlitbooks.com/api/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Greenlit Books, and thousands of servers like it.

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All 5 Greenlit Books tools →

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