Check if a file can be written to in READY phase.
AI agents call check_write_target to retrieve information from Code Intelligence MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only check of file write permissions or status. It does not create, modify, delete, or execute operations on files—it only queries whether a write operation would be permitted. This is a Read operation with low severity, as the blast radius of misuse is minimal: an agent might query inappropriate files but cannot cause data loss or execute code through this tool alone.
From the tool's definition Tool name is 'check_write_target' and description states it 'Check if a file can be written to in READY phase.' The verb 'check' and the purpose of verifying writability indicate a query/validation operation that retrieves status information about file…
Attacks that exploit this kind of access
Check if a file can be written to in READY phase. It is categorised as a Read tool in the Code Intelligence MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Code Intelligence MCP Server MCP server in PolicyLayer and add a rule for check_write_target: 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 Code Intelligence MCP Server. Nothing to install.
check_write_target 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 check_write_target 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 check_write_target. 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.
check_write_target is provided by the Code Intelligence MCP Server MCP server (tech-spoke/llm-helper). 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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