Babysitter Language Server Protocol

Expert skill for implementing Language Server Protocol servers with full IDE feature support

install

source · Clone the upstream repo

git clone https://github.com/a5c-ai/babysitter

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/a5c-ai/babysitter "$T" && mkdir -p ~/.claude/skills && cp -r "$T/library/specializations/programming-languages/skills/lsp-protocol" ~/.claude/skills/a5c-ai-babysitter-language-server-protocol && rm -rf "$T"

manifest: library/specializations/programming-languages/skills/lsp-protocol/SKILL.md

Language Server Protocol Skill

Overview

Expert skill for implementing Language Server Protocol servers with full IDE feature support.

Capabilities

Implement JSON-RPC transport layer
Handle document synchronization (full and incremental)
Implement semantic tokens for syntax highlighting
Implement completion with resolve
Implement hover information with type signatures
Implement go-to-definition/references/implementations
Implement document symbols and workspace symbols
Implement rename with cross-file support
Implement code actions and quick fixes
Implement signature help

Target Processes

lsp-server-implementation.js
debugger-adapter-development.js
error-message-enhancement.js
semantic-analysis.js

Dependencies

LSP specification
vscode-languageserver libraries
tower-lsp (Rust)

Usage Guidelines

Transport: Start with stdio transport, add TCP/websocket as needed
Incremental Sync: Implement incremental document sync for performance
Caching: Cache analysis results and invalidate on document changes
Error Tolerance: Handle malformed documents gracefully
Progress: Report progress for long-running operations

Output Schema

{
  "type": "object",
  "properties": {
    "capabilities": {
      "type": "array",
      "items": { "type": "string" }
    },
    "transportType": {
      "type": "string",
      "enum": ["stdio", "tcp", "websocket"]
    },
    "documentSync": {
      "type": "string",
      "enum": ["full", "incremental"]
    },
    "generatedFiles": {
      "type": "array",
      "items": { "type": "string" }
    }
  }
}