View file content from the collection. Args: path: File path in the collection start_line: Start line (1-based, default: 1) end_line: End line (0 = end of file, default: 0) collection: Collection path (e.g., 'examples/smol_example/codex.sift') Returns: File content
Risk signalsAccepts file system path (path)
Part of the SiftDB server.
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AI agents call view_file to retrieve information from SiftDB without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though view_file only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"view_file": {}
}
}See the full SiftDB policy for all 3 tools.
These attack patterns abuse exactly the kind of access view_file gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
View file content from the collection. Args: path: File path in the collection start_line: Start line (1-based, default: 1) end_line: End line (0 = end of file, default: 0) collection: Collection path (e.g., 'examples/smol_example/codex.sift') Returns: File content. It is categorised as a Read tool in the SiftDB MCP Server, which means it retrieves data without modifying state.
Register the SiftDB MCP server in PolicyLayer and add a rule for view_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 SiftDB. Nothing to install.
view_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 view_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 view_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.
view_file is provided by the SiftDB MCP server (lekt9/sift). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 3 SiftDB tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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