AI agents call list_provider_capacity to retrieve information from Kiln without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information about registered printers from provider integrations. It performs a read-only query with no capability to modify, execute operations, or cause irreversible changes. The blast radius of misuse is minimal—an agent could enumerate available printers but cannot control, damage, or delete them.
From the tool's definition Tool name 'list_provider_capacity' and description 'List printers registered with connected provider integrations' indicate a query/retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
List printers registered with connected provider integrations. It is categorised as a Read tool in the Kiln MCP Server, which means it retrieves data without modifying state.
Register the Kiln MCP server in PolicyLayer and add a rule for list_provider_capacity: 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.
list_provider_capacity is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_provider_capacity 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.
Set action: deny in the PolicyLayer policy for list_provider_capacity. 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.
list_provider_capacity 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.
list_provider_capacity is one line of Kiln's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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