Harvest Filesのファイル・ディレクトリ一覧を取得します
AI agents call list_harvest_files to retrieve information from SORACOM Data Reader MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about files and directories in SORACOM's Harvest storage without creating, modifying, or deleting any data. It is a pure read operation with minimal blast radius—an agent could at most discover the structure of stored data. Classified as Read/low severity.
From the tool's definition Tool name 'list_harvest_files' and description 'Harvest Filesのファイル・ディレクトリ一覧を取得します' (gets a list of files and directories in Harvest Files) indicate retrieval and listing operations with no modification.
Attacks that exploit this kind of access
Harvest Filesのファイル・ディレクトリ一覧を取得します. It is categorised as a Read tool in the SORACOM Data Reader MCP MCP Server, which means it retrieves data without modifying state.
Register the SORACOM Data Reader MCP server in PolicyLayer and add a rule for list_harvest_files: 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 SORACOM Data Reader MCP. Nothing to install.
list_harvest_files 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_harvest_files 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_harvest_files. 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_harvest_files is provided by the SORACOM Data Reader MCP server (leaveanest/alt-soracom-data-reader-mcp). 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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