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Changelog

Unreleased

0.8.0 (2025-09-23)

Major Changes

  • Migrated from class-based SequentialThinkingServer to functional McpServer.
  • Simplified config: replaced config-manager with lightweight buildConfig.
  • Introduced MCP regression framework (147 tests) with improved docs.
  • Consolidated prompt handling into PromptManager with filtering and validation.
  • Upgraded to MCP SDK v1.18.1.
  • Removed custom prompt loading for security and consistency.

Features

  • Structured logging with tool metadata and error handling.
  • Prompt argument filtering for global values.
  • Added tests for literal braces in templates.

Improvements

  • Updated npm dependencies.
  • Debug logs now go to stderr.
  • Simplified entry point (removed parseArgs and CLI options).
  • Updated schema handling with ThoughtDataInputShape.
  • Docs aligned with new architecture.
  • Reduced bundle size (removed chalk).
  • Refined validation with dual-schema/Zod-inferred types.
  • Better shutdown handling with proper exit codes.

Breaking Changes

  • Removed end-to-end test runner, prompt evaluation, and related infra (~2,200 LOC).
  • Dropped valueManager (merged into PromptManager).
  • Removed custom transport handling.
  • Replaced zodToJsonSchema with direct schemas.
  • Eliminated CLI options and debug flag handling.
  • Replaced manual ThoughtData interface with Zod-inferred types and strict/loose schemas.

Bug Fixes

  • Fixed debug logging stream (no MCP interference).
  • Improved prompt filtering to respect declared args.
  • Strengthened error handling and type safety (CallToolResult replaces ServerResult).
  • Removed overzealous template injection neutralization.

0.7.0 (2025-05-10)

Features

  • Added comprehensive MCP prompts system with predefined templates
    • Includes architecture-decision, bug-analysis, code-review, feature-planning, and refactoring-plan prompts
    • The last prompt value is saved so that it can be used again but it will not show until Claude Desktop and Claude Code implement MCP CompleteRequestSchema. See anthropics/claude-code#986
    • Added support for custom prompt templates via JSON files
    • Added Zod-based input sanitization to template processing

0.6.2 (2025-05-04)

Features

  • Added tool annotations support to better inform clients about the tool's behavior
  • Updated MCP SDK version reference to 1.11.0

Improvements

  • Updated ESLint ecosystem to major new versions
    • ESLint: 8.57.1 → 9.26.0
    • @typescript-eslint/parser: 7.18.0 → 8.31.1
    • @typescript-eslint/eslint-plugin: 7.18.0 → 8.31.1
  • Added ESLint v9 flat config support via eslint.config.js
  • Removed obsolete .eslintrc.json configuration
  • Added GitHub Actions CI/CD workflows and contribution templates
  • Added CI badge and Contributing section to README

0.6.1 (2025-05-02)

Bug Fixes

  • Fixed "Maximum call stack size exceeded" error in FilteredStdioServerTransport by preventing recursive stdout.write calls
  • Improved stdout filtering mechanism to avoid circular references when filtering non-JSON output

Improvements

  • Doubled default operation timeout from 30s to 60s for better handling of complex reasoning tasks

0.6.0 (2025-04-30)

Features

  • Upgraded MCP SDK from 0.5.0 to 1.10.2 for enhanced protocol compatibility
  • Added support for additional protocol capabilities (resources, prompts)
  • Implemented custom FilteredStdioServerTransport for improved stability
  • Added handlers for ListResourcesRequestSchema and ListPromptsRequestSchema

Technical Improvements

  • Leveraged zodToJsonSchema utility for schema generation rather than manual creation
  • Documented intent of empty resource and prompt handlers to prevent Claude Desktop errors
  • Refined JSON detection logic in FilteredStdioServerTransport to handle array literals
  • Simplified type aliases by using direct SDK types for better maintainability
  • Improved file header documentation with MCP SDK version information and clearer feature descriptions
  • Updated type definitions for newer SDK compatibility
  • Added zod-to-json-schema dependency
  • Reorganized server.ts with clear section headers for better code organization
  • Enhanced code performance with cached JSON schema and optimized validation
  • Improved type safety with readonly properties and Map instead of object literals

0.5.0 (2025-04-30)

Features

  • Updated core prompt to use HYBRID_DESIGN for better reasoning performance
  • Added prompt evaluation system with documentation and examples
  • Enhanced end-to-end test framework
  • Increased maxThoughtLength for more complex reasoning tasks

0.4.0 (earlier release)

Initial documented version.
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