Open files with optional line number
Part of the Xcodemcp server.
Free to start. No card required.
AI agents use xcode_open_file to create or modify resources in Xcodemcp. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call xcode_open_file repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Xcodemcp.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"xcode_open_file": {
"limits": [
{
"counter": "xcode_open_file_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Xcodemcp policy for all 22 tools.
These attack patterns abuse exactly the kind of access xcode_open_file gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Open files with optional line number. It is categorised as a Write tool in the Xcodemcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Xcode MCP server in PolicyLayer and add a rule for xcode_open_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 Xcodemcp. Nothing to install.
xcode_open_file is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the xcode_open_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 xcode_open_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.
xcode_open_file is provided by the Xcode MCP server (xcodemcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 22 Xcodemcp tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.