Read a specific file (or line range) with symbol metadata and imports. Use instead of Read/grep when you have filePath+lineStart+lineEnd from a search result.
AI agents call th0th_read_file to retrieve information from Th0th 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 and metadata without modifying, deleting, or executing anything. It is a passive query operation analogous to grep or cat, making it a Read category risk with low severity.
From the tool's definition Tool name is 'th0th_read_file' and description states 'Read a specific file (or line range) with symbol metadata and imports.' The verb 'Read' and the explicit statement 'Use instead of Read/grep' confirm this is a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access th0th_read_file gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Th0th, and nothing reaches the server without passing your rules. This is the rule we recommend for th0th_read_file:
{
"version": "1",
"default": "deny",
"tools": {
"th0th_read_file": {}
}
}th0th_read_file is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Read a specific file (or line range) with symbol metadata and imports. Use instead of Read/grep when you have filePath+lineStart+lineEnd from a search result. It is categorised as a Read tool in the Th0th MCP Server, which means it retrieves data without modifying state.
Register the Th0th MCP server in PolicyLayer and add a rule for th0th_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 Th0th. Nothing to install.
th0th_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 th0th_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 th0th_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.
th0th_read_file is provided by the Th0th MCP server (s1lv4/th0th). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 21 Th0th tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
21 Th0th tools catalogued and risk-classified — across an index of 42,500+ MCP servers.