Language Server Protocol

SkillDev tools

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

Instructions available. Your AI can read the instructions. Execution depends on the setup they require.

Account requirements not reviewed. Check the skill instructions before use; ahel provides instructions and does not run this skill.

Add ahel to your AI once: Claude, ChatGPT, Cursor, Claude Code or Codex. Then ask it to use this.

Then ask your AI: use the Language Server Protocol skill

What this skill tells your AI

The instructions your AI receives, as published by a5c-ai/babysitter in library/specializations/programming-languages/skills/lsp-protocol/SKILL.md and read by ahel’s review.

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" }
    }
  }
}

Signals

GitHub stars: 2k
Forks: 112
Last commit: Sep 2026

Advanced

Item type: skill
Key: language-server-protocol
Source: github.com/a5c-ai/babysitter

github.com/a5c-ai/babysitter