AI agents call list_freee_companies to retrieve information from Cockpit without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a straightforward read operation that queries and retrieves accessible company metadata via OAuth. No data is created, modified, deleted, or processed further—it simply enumerates companies for reference in downstream batch operations. The low severity reflects minimal blast radius: an adversarial agent could discover which companies exist but cannot manipulate them or extract sensitive transaction details.
From the tool's definition Tool returns company IDs and names without modification. Description explicitly states 'List all companies' and 'Returns company IDs + names', indicating data retrieval only.
Attacks that exploit this kind of access
List all companies (事業所) accessible by the configured freee OAuth token. Returns company IDs + names. Used for multi-company batch processing. It is categorised as a Read tool in the Cockpit MCP Server, which means it retrieves data without modifying state.
Register the Cockpit MCP server in PolicyLayer and add a rule for list_freee_companies: 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 Cockpit. Nothing to install.
list_freee_companies 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_freee_companies 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_freee_companies. 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_freee_companies is provided by the Cockpit MCP server (michielinksee/kansei-link-cockpit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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