v2.0.0-preview

[2.0.0-preview] - 2025-01-14

Changed

• BREAKING: ASON 2.0 Support - Updated to support ASON 2.0 format
• Configuration Options Updated:
  • ❌ Removed useDictionary (no longer exists in ASON 2.0)
  • ✅ Added useSections - Enable @section organization for objects (default: true)
  • ✅ Added useTabular - Enable key:[N]{fields} tabular arrays (default: true)
  • ✅ Added minFieldsForSection - Min fields to create @section (default: 3)
  • ✅ Added minRowsForTabular - Min rows for tabular format (default: 2)
  • ✅ Added minReferenceOccurrences - Min occurrences for $var reference (default: 2)
  • Changed default delimiter from "," to "|" (pipe is more token-efficient)
• Syntax Updates:
  • Arrays now use key:[N]{fields} instead of key:[N]@fields
  • Tabular data uses pipe delimiter | by default instead of comma ,
  • References now use $var semantic names (already supported)
  • Sections use @section for objects (already supported)
• Updated Documentation:
  • All examples in README.md updated to ASON 2.0 syntax
  • Tool descriptions updated to reflect new format

Dependencies

• Updated @ason-format/ason to ^2.0.0-preview (from ^1.1.3)

Migration Notes

• If you have existing MCP server configurations, update:
  • useDictionary: true → Remove (or replace with useSections: true, useTabular: true)
  • delimiter: "," → delimiter: "|" (recommended)
• ASON output format has changed - see ASON 2.0 documentation

v1.1.3

No significant changes

    View changes on GitHub

v1.1.2

[1.1.2] - 2025-01-12

Changed

• Improved Server Display Name - Changed server name from "ason-mcp-server" to "ASON Compression"
• Added Server Description - "JSON token optimizer for LLMs - Reduces token count by 20-60% with lossless compression"
• Better UI Integration - More descriptive name appears in VS Code MCP Servers panel and other MCP clients

v1.1.1

[1.1.1] - 2025-01-12

Changed

• Improved JSON Output Formatting - decompress_ason now returns clean JSON output without markdown wrapper for better LLM integration
• Core Library Update - Updated to @ason-format/ason@^1.1.3 with critical bug fix for keys containing dots

Fixed

• Fixed display issue in Zed Editor where decompress output wasn't showing in model response

v1.1.0

[1.1.0] - 2025-01-11

Changed

• Tool Outputs Simplified - compress_json now returns only the raw ASON output without additional formatting
• Tool Outputs Simplified - decompress_ason now returns only the raw JSON output without additional formatting
• Improved LLM Integration - Clean outputs prevent LLMs from over-interpreting results in chat interfaces
• Better User Experience - Direct output format works seamlessly with GitHub Copilot, Claude, and Zed Editor

Fixed

• Tool outputs no longer include unnecessary explanatory text
• LLM assistants now display compression results directly instead of re-explaining them

v1.0.0

[1.0.0] - 2025-01-11

Added

• Initial Release - Model Context Protocol server for ASON compression/decompression
• MCP Tools:
  • compress_json - Compress JSON to ASON format with optional configuration
  • decompress_ason - Decompress ASON back to JSON (lossless round-trip)
  • get_compression_stats - Analyze compression metrics (tokens, bytes, reduction %)
  • configure_compressor - Update global compressor settings
• TypeScript Implementation - Full TypeScript with type definitions and Zod validation
• Modern MCP SDK - Built with McpServer and registerTool() API (latest 2025 standards)
• Stdio Transport - Seamless IPC communication with MCP clients
• Global Installation - Installable via npm install -g @ason-format/mcp-server
• Binary Command - ason-mcp command for easy execution
• Configuration Support:
  • indent - Indentation level (default: 1)
  • delimiter - Field delimiter (default: ",")
  • useReferences - Enable object references (default: true)
  • useDictionary - Enable value dictionary (default: true)
• Error Handling - Comprehensive error handling and validation
• Built with tsup - Optimized bundling with tree-shaking

Compatibility

• ✅ Claude Desktop (Anthropic)
• ✅ Cline (VS Code extension)
• ✅ Continue (VS Code extension)
• ✅ Any MCP-compatible client with stdio transport

Dependencies

• @modelcontextprotocol/sdk@^1.21.1 - Official MCP SDK
• @ason-format/ason@^1.1.2 - Core ASON library

Requirements

• Node.js >= 18.0.0