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source-rag-mcp

source-rag-mcp

by hanhy06
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Local

index_sources

Index decompiled Minecraft Java source files to enable local search, symbol lookup, and reference analysis.

Instructions

Index a local decompiled Minecraft Java source tree.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "version": "<version>",
      "sourceDir": "<sourceDir>"
    },
    "name": "index_sources"
  }
}

Input Schema

NameRequiredDescriptionDefault
versionYesVersion label, for example 26.1.
sourceDirYesFolder containing decompiled .java sources.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

B3.1/5.0
Behavior2/5

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

The description lacks behavioral details beyond the single verb 'index'. With no annotations provided, it does not disclose whether indexing is destructive, how long it takes, whether it overwrites previous indices, or what the indexing produces. This is insufficient for a potentially resource-intensive operation.

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

Conciseness4/5

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

The description is a single sentence with no wasted words. It is front-loaded with the key verb and resource. However, it could be slightly more informative without being verbose.

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

Completeness2/5

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

Given the tool has 2 required parameters, no output schema, and no annotations, the description is too minimal. It does not mention prerequisites (e.g., decompilation via 'decompile_classes'), what the index is used for, or any side effects. The sibling tools indicate a workflow that is not explained.

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 both parameters. The tool description adds no extra meaning beyond the schema, so baseline of 3 is appropriate. No further format or constraints are given.

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

Purpose4/5

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

The description clearly states the action (index) and the resource (local decompiled Minecraft Java source tree), making the purpose specific. However, it does not differentiate from sibling tools like 'rag_search' or 'search_text', which are related but distinct.

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

Usage Guidelines3/5

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

No explicit guidance on when to use this tool versus alternatives like 'decompile_classes' (which must be run first) or 'search_text' (which uses the index). The context is implied but not stated.

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

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