list_material_catalog

List all material IDs in the catalog.

SERVERKiln SOURCEcodeofaxel/Kiln

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/kiln/list-material-catalog.md

WHAT IT DOES

What list_material_catalog does on Kiln

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

RISK

Why list_material_catalog is rated Low

This tool retrieves and enumerates material identifiers from an existing catalog. It performs no modifications, deletions, or external operations. The blast radius of misuse is minimal—an agent could only learn what materials are available, which is informational. Classification as Read is appropriate.

From the tool's definition Tool name 'list_material_catalog' and description 'List all material IDs in the catalog' indicate retrieval of data with no side effects. The verb 'list' is a query operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_material_catalog safely

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

list_material_catalog Allowed

list_material_catalog 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": {
    "list_material_catalog": {}
  }
}

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

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

FAQ

Questions about list_material_catalog

What does the list_material_catalog tool do? +

List all material IDs in the catalog. It is categorised as a Read tool in the Kiln MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_material_catalog? +

Register the Kiln MCP server in PolicyLayer and add a rule for list_material_catalog: 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 Kiln. Nothing to install.

What risk level is list_material_catalog? +

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

Can I rate-limit list_material_catalog? +

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

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

list_material_catalog is provided by the Kiln MCP server (codeofaxel/Kiln). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Kiln, and thousands of servers like it.

This server

All 402 Kiln tools →

Across the catalogue

aiva_list_affiliates on AIVA MCP Server →list_circuits on 0gzk →list_agents on 0rca Dojo MCP Server → The MCP Attack Database →

Guides

Roll out MCP under one policy →Data exfiltration →MCP token cost →