util_path_join

Join URL or filesystem-like path segments without traversal escape

SERVERDelx MCP Server SOURCEdelx-mcp-server

Low RISK CLASS

Category Read

Parameters 11 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-davidmosiah-delx-mcp-server/util-path-join.md

WHAT IT DOES

What util_path_join does on Delx MCP Server

AI agents call util_path_join to retrieve information from Delx MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`parts`	array	Yes	Input field: parts.

Parameters from the server's own tool schema.

RISK

Why util_path_join is rated Low

Even though util_path_join only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs util_path_join safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Delx MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For util_path_join, this is the rule to start with:

util_path_join Allowed

util_path_join is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "util_path_join": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Delx MCP Server, apply this rule, and every util_path_join call is checked against it from then on.

FAQ

Questions about util_path_join

What does the util_path_join tool do? +

Join URL or filesystem-like path segments without traversal escape. It is categorised as a Read tool in the Delx MCP Server MCP Server, which means it retrieves data without modifying state.

What parameters does util_path_join accept? +

util_path_join accepts 1 parameter: parts. Required: parts. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on util_path_join? +

Register the Delx MCP Server MCP server in PolicyLayer and add a rule for util_path_join: 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 Delx MCP Server. Nothing to install.

What risk level is util_path_join? +

util_path_join is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit util_path_join? +

Yes. Add a rate_limit block to the util_path_join 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.

How do I block util_path_join completely? +

Set action: deny in the PolicyLayer policy for util_path_join. 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.

What MCP server provides util_path_join? +

util_path_join is provided by the Delx MCP Server MCP server (delx-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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