[ca] Update MCP Gateway to v0.0.76

[github-actions]

Version Update: MCP Gateway v0.0.74 → v0.0.76

Release Date: 2026-01-22
Timeline: 2 minor versions (v0.0.74 → v0.0.75 → v0.0.76)
Docker Image: ghcr.io/githubnext/gh-aw-mcpg:v0.0.76

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Breaking Changes

None - This is a backwards-compatible feature and bug fix release.

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New Features

✨ Extensible Server Types (#414)

• Added customSchemas support for validating custom server configurations
• Enables defining custom server types beyond standard stdio and http with JSON schema validation
• Provides maximum flexibility for custom MCP server integrations

🔧 Enhanced CLI Experience (#415)

• New Cobra-based CLI with validation hooks
• Verbosity control via -v/--verbose flags
• Shell completion support for bash, zsh, and fish shells
• Improved user feedback and faster workflows

🔍 Debug Logging Infrastructure (#411)

• Comprehensive debug logging in request handlers
• Makes troubleshooting MCP routing and backend communication easier
• Use DEBUG=server:* environment variable to see detailed request flows

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Security Improvements

🔒 Credential Sanitization (#419)

• Docker command logs now automatically sanitize sensitive environment variables
• Prevents accidental exposure of tokens, passwords, and secrets in log files
• Improves security posture for production deployments

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Bug Fixes

Variable Expansion Fix (#416)

• Environment variable expansion (${VAR_NAME}) now happens before schema validation
• Allows dynamic configuration values in the container field
• Resolves issues where variables in container configs were incorrectly rejected

Simplified Authentication (#418)

• Removed unnecessary authentication wrapper layer
• Clarified authentication flow and improved maintainability
• Better version management and error type documentation

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Testing & Quality

• Smoke Test Improvements ([Custom Engine Test] Test Issue Created by Custom Engine #401, [Custom Engine Test] Test Pull Request - Custom Engine Safe Output #402, [Custom Engine Test] Test Pull Request - Custom Engine Safe Output #403): Updated MCP testing prompts and requirements for more reliable integration testing
• Expanded Test Coverage ([Custom Engine Test] Test Issue Created by Custom Engine #405, [Custom Engine Test] Test Pull Request - Custom Engine Safe Output #413): Added comprehensive tests for DIFC AgentRegistry, AgentLabels methods, and configuration package
• Repository Cleanup ([Custom Engine Test] Test Issue Created by Custom Engine #406): Removed temporary files and backup artifacts

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Release Highlights Summary

This release brings significant improvements to:

• Configuration flexibility with extensible server types and custom schemas
• Security with credential sanitization in logs
• Developer experience with enhanced CLI capabilities and debug logging
• Reliability with bug fixes for variable expansion and authentication

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Impact Assessment

Risk Level: Low

Affected Features:

• MCP Gateway container deployment
• Custom MCP server configurations
• Debug logging and troubleshooting workflows

Migration Notes:

• No breaking changes - drop-in replacement
• Optional: Update workflows to use new -v/--verbose CLI flags for better debugging
• Optional: Consider using customSchemas for custom server type validation
• Optional: Set DEBUG=server:* environment variable for detailed request logging

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Package Links

• Docker Image: ghcr.io/githubnext/gh-aw-mcpg:v0.0.76
• Repository: https://github.com/githubnext/gh-aw-mcpg
• Release Notes: https://github.com/githubnext/gh-aw-mcpg/releases/tag/v0.0.76
• Full Changelog: githubnext/gh-aw-mcpg@v0.0.74...v0.0.76

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Merged PRs

• Fix Serena MCP testing prompt in smoke tests gh-aw-mcpg#401 - Fix Serena MCP testing prompt in smoke tests
• Update testing requirements in smoke-copilot.lock.yml gh-aw-mcpg#402 - Update testing requirements in smoke-copilot.lock.yml
• updated lock gh-aw-mcpg#403 - updated lock
• [test] Add tests for difc.AgentRegistry.GetOrCreate and AgentLabels methods gh-aw-mcpg#405 - [test] Add tests for difc.AgentRegistry.GetOrCreate and AgentLabels methods
• Clean up root directory: remove temporary files and backup artifacts gh-aw-mcpg#406 - Clean up root directory: remove temporary files and backup artifacts
• Add customSchemas support for extensible server types gh-aw-mcpg#414 - Add customSchemas support for extensible server types
• Implement Cobra CLI enhancements: validation hooks, verbosity flags, completions gh-aw-mcpg#415 - Implement Cobra CLI enhancements: validation hooks, verbosity flags, completions
• [log] Add debug logging to server/handlers.go gh-aw-mcpg#411 - [log] Add debug logging to server/handlers.go
• [test-improver] Improve tests for config package gh-aw-mcpg#413 - [test-improver] Improve tests for config package
• Fix variable expansion in container field before schema validation gh-aw-mcpg#416 - Fix variable expansion in container field before schema validation
• Refactor: Remove authentication wrapper, clarify version management, document error types gh-aw-mcpg#418 - Refactor: Remove authentication wrapper, clarify version management, document error types
• Sanitize credentials in Docker command logs gh-aw-mcpg#419 - Sanitize credentials in Docker command logs

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Status

✅ Constants updated in pkg/constants/constants.go (line 294)
⚠️ Recompile required: Run make recompile to regenerate workflow lock files
📝 Note: Recompile was skipped in this workflow run due to missing build tools (make/go not available in this environment)

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Next Steps

1. A developer with Go build tools should run make recompile to regenerate workflow lock files
2. Review and merge the constants.go change
3. Test MCP Gateway v0.0.76 in a staging environment
4. Deploy to production after validation

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