Return reference locations for the identifier at a zero-based LSP position.
AI agents call lsp_references to retrieve information from Syntax Map without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a static analysis query to find where a symbol is referenced in code. It reads the codebase or index to return reference locations, producing no side effects, modifications, or destructive actions. The operation is purely informational and consistent with Read category tools like 'find_references' (a sibling tool on the same server).
From the tool's definition Tool name 'lsp_references' and description 'Return reference locations for the identifier at a zero-based LSP position' indicate the function retrieves and reports existing code references without modifying data.
Attacks that exploit this kind of access
Return reference locations for the identifier at a zero-based LSP position. It is categorised as a Read tool in the Syntax Map MCP Server, which means it retrieves data without modifying state.
Register the Syntax Map MCP server in PolicyLayer and add a rule for lsp_references: 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 Syntax Map. Nothing to install.
lsp_references 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 lsp_references 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 lsp_references. 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.
lsp_references is provided by the Syntax Map MCP server (kht6163/syntax-map-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
lsp_references is one line of Syntax Map's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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