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gdscript_hover

Read-only

Retrieve type signature and documentation for any symbol in GDScript files using zero-based line and character coordinates.

Instructions

Get type information and documentation for a symbol at a given position. Returns: type signature, documentation string, or description of the symbol. IMPORTANT: Uses ZERO-BASED coordinates. Use to understand what type a variable is, or what a function returns.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
fileYesAbsolute or relative path to the .gd file
lineYesZero-based line number (editor line - 1)
characterYesZero-based character position

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed3 schema fields changedv1.0.6
    • changedInput schema / properties / character / description
      Previous value: -"Character position (0-indexed)"New value: +"Zero-based character position"
    • changedInput schema / properties / file / description
      Previous value: -"File path"New value: +"Absolute or relative path to the .gd file"
    • changedInput schema / properties / line / description
      Previous value: -"Line number (0-indexed)"New value: +"Zero-based line number (editor line - 1)"
  2. First observedv1.0.4

TDQS

A4.2/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations declare readOnlyHint=true. Description adds return type details and emphasizes zero-based coordinates, which is critical behavioral info. No contradictions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two concise sentences that front-load the purpose and include critical coordinate info. No wasted words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

No output schema, but description covers return types (type signature, documentation, or description). For a simple hover tool, this is complete enough. Could mention error handling but not necessary.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with descriptions for each parameter (e.g., line: 'Zero-based line number'). The description does not add parameter-specific info beyond the schema, so baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states it gets type information and documentation for a symbol, specifying zero-based coordinates. It clearly distinguishes from sibling tools like gdscript_definition or gdscript_references by its purpose.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides explicit guidance on when to use: 'Use to understand what type a variable is, or what a function returns.' Does not cover when not to use, but the context is clear enough.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.