Lexicon MCP
Local Mac prompt library that turns each prompt into a Claude slash command via MCP.
Documentation
An AI prompt library and manager for macOS with a built-in MCP server. Organize, template, and trigger your best prompts straight from Claude.
$1.99/mo
PlatformmacOS 14+
StorageSQLite · local
ProtocolMCP · Claude
TelemetryNone
Access$1.99 / month
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What it does.
01
Prompt library
Every prompt, versioned and searchable in one place.
02
Template variables
Parameterize prompts; fill the blanks at call time.
03
Smart collections
Auto-group prompts by tag, use, or project.
04
Slash commands
Trigger any prompt from Claude Desktop and Claude Code.
Wired to Claudethrough MCP.
Lexicon ships a Model Context Protocol server. Connect it once and trigger any prompt — variables filled — straight from the conversation.
▸ Slash commands in Claude Desktop & Code
▸ Template variables resolved at call time
▸ Local-only — prompts never leave your Mac
claude — mcp · lexicon
› claude mcp add lexicon
connecting to local server …
✓ registered · 0 cloud calls
› /review-pr lang=swift focus=perf
resolving template @ ~/lexicon.db
→ 3 variables filled · prompt ready
› █
Building a Prompt Library Organize, template, and reuse your best prompts — local-only storage.
Code Review Prompts Variables for language, framework, and focus; trigger as slash commands.
AI Writing Workflows Editing, tone, and drafting prompts, consistent across audiences.
Data Analysis Prompts Reusable templates for source, output format, and chart styling.