Read the full content of any local file. Supports ~ paths and Chinese/Unicode filenames.
AI agents call superskills_read_file to retrieve information from Superskills without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves file contents without side effects, fitting the Read category. Severity is medium rather than low because unrestricted file access could expose sensitive configuration files, credentials, private keys, or other confidential local data if an AI agent is compromised or acts adversarially. The tilde-path support and broad filename support suggest minimal restrictions on what files can be read.
From the tool's definition Tool description states 'Read the full content of any local file' with support for arbitrary paths including home directory expansion (~) and Unicode filenames. The function is explicitly a read operation with no modification capability.
Attacks that exploit this kind of access
Read the full content of any local file. Supports ~ paths and Chinese/Unicode filenames. It is categorised as a Read tool in the Superskills MCP Server, which means it retrieves data without modifying state.
Register the Superskills MCP server in PolicyLayer and add a rule for superskills_read_file: 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 Superskills. Nothing to install.
superskills_read_file 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 superskills_read_file 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 superskills_read_file. 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.
superskills_read_file is provided by the Superskills MCP server (lee2026-dev/superskills-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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