082 Claude 9b907af2

Plugin-Creator Plugin - AI-Facing Documentation

Complete plugin development toolkit for creating, refactoring, and validating Claude Code plugins, agents, skills, and commands.

Plugin Identity

Name: plugin-creator Version: 2.3.0 Purpose: Provides end-to-end capabilities for plugin development lifecycle - creation, validation, refactoring, and quality assurance.

Core Capabilities:

• ✅ Create new plugins (via script)
• ✅ Create new agents (via skill)
• ❌ Create new skills (GAP - no dedicated tool)
• ❌ Create new commands (GAP - no dedicated tool)
• ✅ Refactor plugins and skills
• ✅ Validate frontmatter, plugins, and structure
• ✅ Quality analysis and improvement

CRITICAL: Skill Name Field Bug (Plugin Skills Only)

Discovery Date: 2026-01-29 Status: Confirmed Claude Code v2.1.23 bug Scope: Only affects plugin skills - does NOT affect .claude/skills/ directories

The Bug

Plugin skills with an explicit name: field in their frontmatter DO NOT appear as slash commands, even when user-invocable: true is set.

Important: This bug only affects skills distributed via plugins. Skills in .claude/skills/ (personal/project) work fine with or without the name: field.

Symptoms (Plugin Skills Only):

• Skill listed in skills array of plugin.json
• Skill has user-invocable: true in frontmatter
• Skill has name: skill-name in frontmatter
• Result: Skill does NOT appear in /plugin-name:skill-name autocomplete menu

Not Affected:

• Skills in ~/.claude/skills/ (user-level)
• Skills in .claude/skills/ (project-level)
• These work fine with name: field present

Workaround:

• Remove the name: field entirely from SKILL.md frontmatter
• Claude Code will use the directory name instead
• Result: Skill WILL appear as /plugin-name:skill-name

Evidence

Test performed:

1. plugin-creator had 14 skills, only /count-lines (a command) appeared
2. Removed name: field from 3 skills (skill-creator, agent-creator, assessor)
3. Those 3 skills immediately appeared as slash commands
4. Removed name: from all remaining skills
5. All skills now appear in autocomplete

Before fix:

---
name: skill-creator  # <-- This PREVENTS slash command registration
description: Guide for creating effective skills
user-invocable: true
---

Result: /plugin-creator:skill-creator NOT in menu

After fix:

---
description: Guide for creating effective skills
user-invocable: true
---

Result: /plugin-creator:skill-creator appears in menu ✓

Validator Auto-Fix

The plugin_validator.py script now automatically removes name: fields from SKILL.md files with this explanation:

Removed 'name' field (Claude Code bug: skills with 'name' field don't appear as slash commands)

Official Documentation Contradiction

The official Claude Code documentation states:

name: Display name for the skill. If omitted, uses the directory name.

This implies name: is optional and should work either way. However, having the field prevents slash command registration entirely. This is a bug in Claude Code, not intended behavior.

Recommendation

For plugin skills: DO NOT use name: field in SKILL.md files until this bug is fixed in Claude Code.

For .claude/skills/ (personal/project skills): The name: field works correctly and can be used if desired (though it's optional since directory name is used by default).

When to Use This Plugin

The model MUST use this plugin when:

• User asks to "create a new plugin"
• User asks to "create a new agent"
• User asks to "validate frontmatter" in SKILL.md or agent files
• User asks to "refactor a plugin" or "split a skill"
• User asks to "check skill line counts"
• User needs to validate plugin.json or plugin structure
• User wants to fix tool formatting issues in frontmatter

Component Inventory

Skills (13)

Agents (6)

Commands (1)

Scripts (7)

Consolidated Agents (v2.6.0)

As of version 2.6.0, the following agents were consolidated from external locations into plugin-creator to make the plugin self-contained:

subagent-refactorer

Source: Previously at ~/.claude/agents/subagent-refactorer.md Purpose: Refactor Claude Code subagents using Anthropic prompt engineering best practices Usage: AGENT_OPTIMIZE task types in refactoring workflows Key Features:

• Researches current Anthropic documentation before refactoring
• Applies strategic XML tagging and Constitutional AI patterns
• Optimizes for Sonnet 4.5 vs Opus 4.1 model selection
• Generates analysis reports with citations and validation checklists

contextual-ai-documentation-optimizer

Source: Previously at ./.claude/agents/contextual-ai-documentation-optimizer.md Purpose: Optimize prompts, SKILL.md, and CLAUDE.md files for Claude comprehension Usage: DOC_IMPROVE and ORPHAN_RESOLVE task types Key Features:

• Enables prompt-optimization-claude-45 skill (external dependency)
• Applies positive framing over negative constraints
• Uses concrete examples over abstract descriptions
• Front-loads critical instructions

Note: Requires prompt-optimization-claude-45 skill from separate plugin.

plugin-assessor

Source: Previously at ./.claude/agents/plugin-assessor.md Purpose: Analyze plugins for structure, frontmatter, schema compliance, and quality Usage: Validation tasks and pre-marketplace review Key Features:

• Comprehensive reference file audit (orphan detection)
• Cross-reference validation and link graph analysis
• Frontmatter schema validation against official specs
• Generates detailed assessment reports with scoring

Skills loaded: claude-skills-overview-2026, claude-plugins-reference-2026, claude-hooks-reference-2026 (all included in plugin-creator)

Verified Workflows

Workflow 1: Create New Plugin

Entry Point: Run script directly Verified: ✅ Yes

# Interactive plugin scaffolding
uv run plugins/plugin-creator/scripts/create_plugin.py

What It Does:

1. Prompts for plugin name, description, author
2. Creates .claude-plugin/ directory
3. Creates plugin.json with validated schema
4. Optionally creates skills/, agents/ directories
5. Self-validates before reporting success

Validation: Runs claude plugin validate internally

Workflow 2: Create New Agent

Entry Point: /agent-creator skill Verified: ✅ Yes

Trigger Phrases:

• "Create a new agent"
• "Add an agent to {plugin}"
• "I need an agent for {task}"

Agent Creation Process:

1. Discovery Phase:

   • Reads existing agents in .claude/agents/
   • Identifies similar agents as templates
   • Reviews archetype templates

2. Requirements Gathering:

   • Uses AskUserQuestion for: purpose, triggers, tools, model, skills

3. Template Selection:

   • Presents options: existing project agents, role archetypes, from scratch
   • User selects via AskUserQuestion

4. Agent File Creation:

   • Creates frontmatter with validated fields
   • Writes agent body with workflow, quality standards

5. Scope Determination (uses AskUserQuestion):

   • Project-level: Saves to .claude/agents/{name}.md
   • User-level: Saves to ~/.claude/agents/{name}.md
   • Plugin: Saves to {plugin}/agents/{name}.md + updates plugin.json

6. Validation:

   • Runs plugin_validator.py on agent file
   • If plugin agent: runs claude plugin validate {plugin-path}

Outputs:

• Agent file at appropriate location
• Updated plugin.json (if plugin agent)
• Validation report

Workflow 3: Create New Skill

Entry Point: ❌ NO DEDICATED TOOL Verified: ❌ GAP IDENTIFIED

Current State:

• No skill-creator skill exists
• No create_skill.py script exists
• Users must manually create SKILL.md files

Gap Analysis:

• Creating skills requires understanding frontmatter schema
• Need template selection (similar to agent-creator)
• Need scope determination (project/user/plugin)
• Need plugin.json update if plugin skill
• Need validation after creation

Recommendation: Create /skill-creator skill following agent-creator pattern

Workflow 4: Create New Command

Entry Point: ❌ NO DEDICATED TOOL Verified: ❌ GAP IDENTIFIED

Current State:

• No command-creator skill exists
• No create_command.py script exists
• Commands in plugins are deprecated per official docs
• Users create commands in ~/.claude/commands/ manually

Gap Analysis:

• Creating user-level commands requires frontmatter knowledge
• No template or validation guidance
• Commands in plugins deprecated - should document this

Recommendation: Create /command-creator skill for user-level commands only

Workflow 5: Validate Plugin Components

Entry Point: plugin_validator.py script Verified: ✅ Yes

Supported File Types:

• Complete plugins (validates all components)
• Individual SKILL.md files
• Individual agent .md files
• Individual command .md files

Usage:

# Validate single file
uv run plugins/plugin-creator/scripts/plugin_validator.py {path}

# Validate entire plugin directory
uv run plugins/plugin-creator/scripts/plugin_validator.py plugins/my-plugin

# Auto-fix issues
uv run plugins/plugin-creator/scripts/plugin_validator.py --fix {path}

# Validate only (no fixes)
uv run plugins/plugin-creator/scripts/plugin_validator.py --check {path}

# Verbose output with details
uv run plugins/plugin-creator/scripts/plugin_validator.py --verbose {path}

# CI mode (no color)
uv run plugins/plugin-creator/scripts/plugin_validator.py --no-color {path}

What It Validates:

• Frontmatter schema:
  • YAML syntax validity
  • No forbidden multiline indicators (>-, |-)
  • Required fields present
  • Field types match schema
  • Tools/skills are comma-separated strings (not YAML arrays)
• Plugin structure:
  • plugin.json schema compliance
  • Component path references
  • Version consistency
• Skill complexity:
  • Token-based complexity measurement (not line count)
  • Warning at 4000 tokens (~500 lines)
  • Error at 6400 tokens (~800 lines)
• Internal links:
  • Markdown link validity
  • Progressive disclosure structure
• Component completeness:
  • Required files present
  • Cross-reference validation

What It Auto-Fixes:

• YAML arrays → comma-separated strings
• Multiline descriptions → single-line quoted strings
• Unquoted descriptions with colons
• Missing name: fields in plugin skills (auto-removes due to Claude Code bug)

Schema Coverage:

Error Codes: See ERROR_CODES.md for complete error code reference (23 codes across 9 validators)

SOURCE: plugin_validator.py script with comprehensive validation and token-based complexity measurement

Workflow 6: Validate Skill Structure

Entry Point: validate-skill-structure.sh script Verified: ✅ Yes

Purpose: Quality checks beyond frontmatter validation

Usage:

plugins/plugin-creator/scripts/validate-skill-structure.sh {skill-directory}

What It Validates:

1. Frontmatter Presence: SKILL.md starts with --- and closes properly
2. Name Field: Present, lowercase, hyphens only
3. Description Field: Present, minimum 20 characters, includes trigger phrases
4. Line Count Limits:
   • WARN if body >500 lines
   • ERROR if body >800 lines
5. Progressive Disclosure: Checks for references/, examples/, scripts/ directories
6. Internal Links: Validates markdown links with ./ prefix point to existing files

Exit Codes:

• 0: Pass (all checks or warnings only)
• 1: Fail (errors found)

SOURCE: Verified by reading validate-skill-structure.sh lines 1-176

Workflow 7: Validate Complete Plugin

Entry Point: claude plugin validate command Verified: ✅ Yes (built-in Claude Code command)

Usage:

claude plugin validate {plugin-directory}

What It Validates:

• plugin.json exists in .claude-plugin/
• JSON syntax valid
• Required field name present
• name is kebab-case
• All paths start with ./
• agents field is array of individual file paths (not directory string)
• Referenced files exist

Common Errors:

SOURCE: Verified via claude-plugins-reference-2026 skill

Workflow 8: Refactor Plugin

Entry Point: /refactor-plugin skill Verified: ✅ Yes

Trigger Phrases:

• "Refactor {plugin-name} plugin"
• "Analyze plugin for refactoring"
• "Create refactoring plan for {plugin}"

Process Flow:

1. Assessment (delegates to @"plugin-creator:refactor-planner (agent)"):

   • Analyzes plugin structure
   • Identifies oversized skills (>500 lines)
   • Checks agent descriptions for weak triggers
   • Detects orphaned files
   • Creates assessment report

2. Design:

   • Creates refactor-design-{slug}.md with strategy

3. Task Planning:

   • Creates tasks-refactor-{slug}.md with executable tasks
   • Maps dependencies
   • Identifies parallelization opportunities

4. Execution (delegates to @"plugin-creator:refactor-executor (agent)"):

   • Executes tasks in dependency order
   • Runs parallel where possible
   • Tracks completion status

5. Validation (delegates to @"plugin-creator:refactor-validator (agent)"):

   • Verifies refactoring achieved goals
   • Checks for regressions
   • Creates follow-up tasks if issues found

Task Types Handled:

When DOC_UPDATER_ADD is identified:

• Skill wraps external documentation (API specs, CLI refs, frameworks)
• Documentation source updates regularly (weekly, monthly)
• Skill would benefit from automated sync vs. manual updates

OUTPUT: Task files in .claude/plan/ directory

Workflow 9: Split Oversized Skill

Entry Point: /refactor-skill skill Verified: ✅ Yes

Model: opus (requires complex reasoning)

Trigger Phrases:

• "Split the {skill-name} skill"
• "Refactor oversized skill"
• "This skill is over 800 lines"

Process:

1. Reads existing skill SKILL.md
2. Identifies logical boundaries and domains
3. Designs split plan
4. Generates new SKILL.md files for each extracted skill
5. Validates 100% content migration (no loss)
6. Creates cross-references between new skills
7. Updates original skill as facade/meta-skill

Quality Requirements:

• No content loss
• Complete fidelity
• Backwards compatibility maintained
• All cross-references valid

Workflow 10: Count Skill Lines

Entry Point: /plugin-creator:count-lines command Verified: ✅ Yes

Usage:

/plugin-creator:count-lines {plugin-or-skill-path}

What It Does:

1. Runs ${CLAUDE_PLUGIN_ROOT}/scripts/count-skill-lines.sh
2. Displays table with line counts
3. Shows status: OK / WARNING (>500) / CRITICAL (>800)

Output Format:

| Skill | Total | Body | Status |
|-------|-------|------|--------|
| python3 | 650 | 580 | WARNING (>500) |
| testing | 320 | 280 | OK |

Workflow 12: Add Documentation Updater to Skill

Entry Point: /add-doc-updater skill Verified: ✅ Yes

Trigger Phrases:

• "Add doc sync to {skill}"
• "Automate documentation updates for {skill}"
• "This skill needs to wrap {external docs}"

Process Flow:

1. Phase 0 - Variable Collection:

   • Validate target skill path
   • Infer defaults (skill name, cooldown 7 days)
   • Collect 6 template variables via AskUserQuestion
   • Confirm before proceeding

2. Phase 1 - Implementation:

   • Load /python3-development orchestration
   • Substitute template variables
   • Delegate to @python-cli-architect agent
   • Creates scripts/update-{LOCAL_DOC_DIR}-docs.py

3. Phase 2 - Code Review:

   • Delegate to @python-code-reviewer agent
   • Validate: ReDoS-safe regex, atomic operations, link transformation
   • Loop back to Phase 1 on failure

4. Phase 3 - Quality Gates:

   • Sequential: ruff format → ruff check → mypy → pyright → prek
   • All must pass to proceed
   • Loop back to Phase 1 on failure

5. Phase 4 - Testing & Validation:

   • 7-point checklist: execution, file existence, Hugo shortcode removal, link sampling, SKILL.md integration, cooldown enforcement, force flag
   • Loop back to Phase 1 on failure

6. Phase 5 - Integration:

   • Update SKILL.md Execution Protocol section
   • Add .gitignore entries for lock files and downloaded docs
   • Integration test via general-purpose agent
   • Loop back to Phase 1 if agent cannot discover documentation

Success Criteria:

• Script passes all quality gates
• All 7 validation tests pass
• SKILL.md includes execution protocol
• Integration test demonstrates autonomous documentation access
• Cooldown prevents excessive upstream requests
• Force flag allows manual override

OUTPUT: Documentation updater ready for use

SOURCE: Verified by reading add-doc-updater/SKILL.md lines 1-354

Workflow 11: Fix Tool Formatting Issues

Entry Point: fix_tool_formats.py script Verified: ✅ Yes

Purpose: Fix invalid tool format patterns in frontmatter across entire codebase

Usage:

# Scans ~/.claude and ~/repos recursively
uv run plugins/plugin-creator/scripts/fix_tool_formats.py

What It Fixes:

1. YAML list → comma-separated string:

   # Before
   tools:
     - Read
     - Grep
   
   # After
   tools: Read, Grep
   

2. JSON array → comma-separated string:

   # Before
   tools: ["Read", "Grep"]
   
   # After
   tools: Read, Grep
   

Scan Locations:

• ~/.claude/agents/**/*.md
• ~/.claude/commands/**/*.md
• ~/.claude/skills/**/SKILL.md
• ~/repos/**/.claude/** (all markdown in .claude directories)

Why This Matters: Invalid formats become "evidence" in future Grep searches, creating feedback loop where AI learns incorrect patterns from its own mistakes.

SOURCE: Verified by reading scripts/README.md and fix_tool_formats.py

Identified Gaps

Gap 1: No Skill Creator

Current State: Can create agents, cannot create skills Impact: Users must manually create SKILL.md files without guidance Recommendation: Create /skill-creator skill similar to /agent-creator

Required Capabilities:

• Template selection (general-purpose, domain-specific, etc.)
• Frontmatter generation with validation
• Scope determination (project/user/plugin)
• Plugin.json update if plugin skill
• Post-creation validation

Note: Skills Are Commands

Observation from official docs (line 9 of claude-skills-overview-2026):

"Skills and slash commands are now unified - they are the same system. A file at .claude/commands/review.md and a skill at .claude/skills/review/SKILL.md both create /review and work identically. Skills are the recommended approach."

Conclusion: No separate command-creator needed. Creating a skill with user-invocable: true creates a slash command.

Gap 2: Incomplete Validation Coverage

Validated:

• ✅ Frontmatter schema (via plugin_validator.py)
• ✅ Plugin.json syntax (via claude plugin validate)
• ✅ Skill structure quality (via validate-skill-structure.sh)

Not Validated:

• ❌ Agent frontmatter vs skill frontmatter differences (validate-skill-structure.sh only checks skills)
• ❌ Command frontmatter (no dedicated validator beyond general plugin_validator.py)
• ❌ Cross-references between components (e.g., agent references non-existent skill)

Recommendation: Extend validation to cover agent-specific checks and cross-reference validation

Usage Patterns for the Model

Pattern 1: User Wants to Create Something

If user says: "Create a new {plugin|agent|skill|command}"

1. Identify what they want to create
2. Check if tool exists:
   - Plugin → uv run scripts/create_plugin.py
   - Agent → /agent-creator
   - Skill → ❌ GAP - no tool (manual creation)
   - Command → ❌ GAP - no tool (manual creation)
3. If gap: Offer manual creation with validation guidance

Pattern 2: User Wants to Validate

If user says: "Validate {frontmatter|plugin|skill}"

1. Determine validation type:
   - Frontmatter → uv run scripts/plugin_validator.py validate {path}
   - Complete plugin → claude plugin validate {path}
   - Skill structure → scripts/validate-skill-structure.sh {path}
2. Run appropriate validator
3. Report results with specific file:line references

Pattern 3: User Wants to Refactor

If user says: "Refactor {plugin}" or "This skill is too large"

1. If skill >500 lines:
   - Run /plugin-creator:count-lines first to show problem
   - Offer /refactor-skill for individual skill
   - Offer /refactor-plugin for whole plugin
2. If general plugin refactoring:
   - Delegate to refactor-planner agent
   - Review generated plan with user
   - Delegate execution to refactor-executor agent
   - Validate with refactor-validator agent

Pattern 4: User Reports Validation Errors

If user says: "Getting 'agents: Invalid input'" or similar

1. Read their plugin.json
2. Check against common errors:
   - agents field must be array of file paths
   - tools fields must be comma-separated strings
   - All paths must start with ./
3. Offer fix_tool_formats.py for tool format issues
4. Offer plugin_validator.py fix for frontmatter issues

Script Execution Paths

All scripts use absolute paths or are executable with uv run:

# From anywhere in the repository:
uv run plugins/plugin-creator/scripts/plugin_validator.py validate {path}
uv run plugins/plugin-creator/scripts/create_plugin.py

# Scripts that work from their directory:
cd plugins/plugin-creator/scripts
./validate-skill-structure.sh {path}
./count-skill-lines.sh {path}
./validate-task-file.sh {path}

Important: Scripts expect to be run from repository root or use ${CLAUDE_PLUGIN_ROOT} variable.

Plugin System Fundamentals

Plugin Caching and File Resolution

CRITICAL: Claude Code copies plugins to a cache directory rather than using them in-place.

How it works:

• Marketplace plugins with relative paths: The source path is copied recursively
• Plugins with .claude-plugin/plugin.json: The directory containing .claude-plugin/ is copied recursively

Path traversal limitations:

• Plugins CANNOT reference files outside their directory (../shared-utils will FAIL after installation)
• External files are NOT copied to the cache

Solutions for external dependencies:

1. Use symlinks: Create symlinks within plugin directory (symlinks are followed during copy)

   ln -s /path/to/shared-utils ./shared-utils
   

2. Restructure marketplace: Set source to parent directory that contains all required files

SOURCE: Lines 350-398 of claude-plugins-reference-2026/SKILL.md

Installation Scopes

When installing plugins, the scope determines where the plugin is available:

Usage examples:

# Install to user scope (default)
claude plugin install formatter@my-marketplace

# Install to project scope (shared with team)
claude plugin install formatter@my-marketplace --scope project

# Install to local scope (gitignored)
claude plugin install formatter@my-marketplace --scope local

SOURCE: Lines 401-410 of claude-plugins-reference-2026/SKILL.md

Environment Variables

When commands execute, they have access to:

Example from count-lines.md:

${CLAUDE_PLUGIN_ROOT}/scripts/count-skill-lines.sh "$ARGUMENTS"

SOURCE: Lines 415-434 of claude-plugins-reference-2026/SKILL.md

Quality Standards Enforced

Skill Size Limits

• Recommended: <500 lines (body content)
• Warning: 500-800 lines
• Critical: >800 lines (must split)

Frontmatter Requirements

Skills:

• name: Optional (uses directory name if omitted)
• description: Optional (uses first paragraph if omitted)

Agents:

• name: Required (lowercase, hyphens, max 64 chars)
• description: Required (trigger keywords, max 1024 chars)
• model: Must be sonnet/opus/haiku/inherit if specified
• tools: Must be comma-separated string (not YAML array)

Commands:

• description: Required
• allowed-tools: Must be comma-separated string (not YAML array)

Plugin.json Requirements

Required fields:

• name: Required, kebab-case

Component path fields:

Path behavior rules:

• Custom paths supplement default directories - they don't replace them
• If commands/ exists, it's loaded in addition to custom command paths
• All paths must be relative and start with ./
• Multiple paths can be specified as arrays

SOURCE: Lines 75-91 of claude-plugins-reference-2026/SKILL.md

Verification Status

This documentation was created 2026-01-28 by:

1. Reading all skill SKILL.md files
2. Reading all agent frontmatter
3. Reading all command files
4. Reading all script files
5. Testing scripts where possible
6. Cross-referencing with official Claude Code documentation

Verification Method: Direct file reading and execution verification, not assumption-based.

Gaps Explicitly Identified: Listed in "Identified Gaps" section above.

Script Consolidation Recommendation

Current State: Validation and linting functionality is spread across multiple scripts:

• plugin_validator.py - Frontmatter schema validation
• validate-skill-structure.sh - Skill structure validation (bash)
• count-skill-lines.sh - Line counting (bash)
• validate-task-file.sh - Task file validation (bash)
• fix_tool_formats.py - Tool format fixing

Recommendation: Consolidate into a single cross-platform Python script: lint-claude-plugin.py

Requirements:

1. Single Script: Combine all validation functionality into one Python 3.11+ script
2. Cross-Platform: Pure Python, no bash dependencies, works on Windows/Linux/macOS
3. Pre-commit Integration: Compatible with .pre-commit-config.yaml hooks
4. Token-Based Metrics: Use tiktoken library to measure skill complexity in tokens, not lines
   • Line count is a poor proxy for complexity
   • Token count directly measures what Claude processes
   • Thresholds should be token-based (e.g., warn at X tokens, error at Y tokens)
5. Unified Validation: Single entry point that validates:
   • Frontmatter schema (skills, agents, commands)
   • Plugin.json structure
   • Skill complexity via token count
   • Internal link validity
   • Progressive disclosure structure
   • Tool format correctness

Benefits:

• Single tool to install and maintain
• Consistent behavior across platforms
• Better complexity measurement (tokens vs lines)
• Pre-commit hook compatibility
• Reduced maintenance burden

Implementation Priority: Medium - Current scripts work but consolidation would improve usability

LSP Server Integration

Plugins can provide Language Server Protocol (LSP) servers for real-time code intelligence:

Capabilities:

• Instant diagnostics: Claude sees errors and warnings immediately after each edit
• Code navigation: go to definition, find references, hover information
• Language awareness: type information and documentation for code symbols

Configuration format (.lsp.json or inline in plugin.json):

{
  "lspServers": {
    "python": {
      "command": "pyright-langserver",
      "args": ["--stdio"],
      "extensionToLanguage": {
        ".py": "python"
      }
    }
  }
}

Required fields:

Optional fields:

CRITICAL: LSP servers require separate binary installation. LSP plugins configure Claude Code's connection to a language server but don't include the server itself.

Available LSP plugins:

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