gd_signature_help
Show the call signature(s) and active parameter at a position (the parameter hints an IDE pops up inside a call). Godot's GDScript language server advertises signatureHelpProvider.
This record as markdown: /tools/breakpoint-mcp/gd-signature-help.md
What gd_signature_help does on Breakpoint
AI agents call gd_signature_help to retrieve information from Breakpoint 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 |
|---|---|---|---|
line | integer | Yes | 0-based line |
path | string | Yes | Script path (res://..., absolute, or project-relative) |
character | integer | Yes | 0-based character |
Parameters from the server's own tool schema.
Why gd_signature_help is rated Low
This is a language server introspection tool that retrieves and displays signature metadata to aid development. It performs no mutations, executes no code, and has no external side effects. Fits Read category with low severity since misuse would only provide incorrect documentation hints.
From the tool's definition Tool shows call signatures and parameter hints (IDE feature); GDScript language server's signatureHelpProvider. No data modification, execution, or side effects—purely informational about syntax/API.
Risk signalsAccepts file system path (path)
Attacks that exploit this kind of access
The rule that runs gd_signature_help safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Breakpoint, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For gd_signature_help, this is the rule to start with:
gd_signature_help is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Breakpoint, apply this rule, and every gd_signature_help call is checked against it from then on.
Questions about gd_signature_help
Show the call signature(s) and active parameter at a position (the parameter hints an IDE pops up inside a call). Godot's GDScript language server advertises signatureHelpProvider. It is categorised as a Read tool in the Breakpoint MCP Server, which means it retrieves data without modifying state.
gd_signature_help accepts 3 parameters: line, path, character. Required: line, path, character. The full parameter table on this page comes from the server's own tool schema.
Register the Breakpoint MCP server in PolicyLayer and add a rule for gd_signature_help: 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 Breakpoint. Nothing to install.
gd_signature_help 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 gd_signature_help 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 gd_signature_help. 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.
gd_signature_help is provided by the Breakpoint MCP server (breakpoint-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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