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pelikhan merged 3 commits into from
Jan 12, 2026
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Update CLI versions: Claude Code 2.1.5 and MCP Gateway v0.0.39 #9682

pelikhan merged 3 commits into from
Jan 12, 2026

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Copilot AI commented Jan 12, 2026 •
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Updates two CLI tool versions based on automated version check: Claude Code 2.1.4→2.1.5 (patch release) and MCP Gateway v0.0.26→v0.0.39 (13 releases with HTTP backend support, authentication, and session header fixes).

Changes

  • Constants: Updated DefaultClaudeCodeVersion and DefaultMCPGatewayVersion in pkg/constants/constants.go
  • Tests: Updated version expectations in pkg/constants/constants_test.go
  • Workflows: Recompiled 116 .lock.yml files to propagate new versions

Claude Code 2.1.5

Patch release with minor improvements. No CLI behavior changes.

MCP Gateway v0.0.39

Major enhancements across 13 releases:

  • HTTP MCP Support (v0.0.30): Pre-launched backend service integration
  • Authentication (v0.0.36): Spec-compliant API key auth with auto-configured headers
  • Session Headers (v0.0.39): Mcp-Session-Id header inclusion for strict HTTP servers
  • Container Networking (v0.0.33): Auto-resolves host.docker.internal in containerized environments
  • Logging: Privacy-preserving JSONL RPC message logging with payload preview

All changes are backward-compatible. No migration required.

Original prompt

This section details on the original issue you should resolve

<issue_title>[ca] CLI Version Updates: Claude Code 2.1.5 and MCP Gateway v0.0.39</issue_title>
<issue_description>## Version Check Summary

Date: 2026-01-12
Previous Check: 2026-01-06 (6 days ago)

Updates Applied

Two CLI tools have been updated:

  1. Claude Code: 2.1.4 → 2.1.5
  2. MCP Gateway: v0.0.26 → v0.0.39 (13 intermediate releases)

No Updates Needed

The following tools are already at the latest version:

  • Copilot CLI: 0.0.377 (latest)
  • Codex: 0.80.0 (latest)
  • GitHub MCP Server: v0.27.0 (latest)
  • Playwright MCP: 0.0.55 (latest)
  • Playwright Browser: v1.57.0 (latest)
  • Sandbox Runtime: 0.0.26 (latest)

Update #1: Claude Code

Version: 2.1.4 → 2.1.5
Release Date: January 11, 2026
Timeline: 1 day since 2.1.4

Changes

Breaking Changes

None

New Features

  • Patch release with minor improvements

Bug Fixes

  • Minor bug fixes and stability improvements

Security

None reported

CLI Discovery

No changes detected - CLI help output is identical between 2.1.4 and 2.1.5

Impact Assessment

  • Risk: Low
  • Affected Features: None (patch release)
  • Migration: No migration required

Package Links

Update #2: MCP Gateway

Version: v0.0.26 → v0.0.39
Release Timeline: 13 releases between 2026-01-11 18:10:33Z and 2026-01-12 03:07:26Z (less than 9 hours)
Frequency: Rapid iteration with multiple releases per hour

Intermediate Versions

Between v0.0.26 and v0.0.39, the following versions were released:

  • v0.0.27 through v0.0.39 (13 releases)

Changes by Category

Breaking Changes

None

New Features

HTTP MCP Server Support (v0.0.30):

  • Integration with pre-launched backend services
  • Support for remote MCP servers via HTTP
  • Critical for distributed MCP architectures

Authentication (v0.0.36):

  • Spec-compliant API key authentication
  • Auto-configured authentication headers (v0.0.37)
  • Enhanced /health endpoint with JSON protocol version

Container Networking (v0.0.33):

  • Automatic host.docker.internal DNS resolution in containerized environments
  • Fixed BusyBox grep incompatibility (v0.0.35)

Session Headers (v0.0.39, v0.0.38):

  • Proper inclusion of Mcp-Session-Id header during HTTP backend initialization
  • Fixes initialization failures for strict HTTP MCP servers

Logging & Debugging Improvements

Privacy-Preserving Logging (v0.0.26, v0.0.35):

  • JSONL RPC message logger with payload preview
  • Session lifecycle tracking
  • Every RPC message sent/received is logged

Message Formatting (v0.0.28, v0.0.29, v0.0.31):

  • Enhanced JSON-RPC message rendering in markdown
  • Proper indentation and formatting
  • Dual-output debug logging (stderr and file)
  • Merged debug logger into file logger (v0.0.34)

Bug Fixes

Critical Compatibility (v0.0.39):

  • Fixed HTTP backend MCP server initialization requiring session ID headers
  • Enables seamless communication with strict HTTP MCP servers

Container Compatibility (v0.0.35):

  • Fixed BusyBox grep incompatibility in containerized host IP detection

Performance

No specific performance improvements noted

Security

  • API key authentication support (v0.0.36)
  • Privacy-preserving logging with payload preview limits

Release Highlights

v0.0.39 (Latest)

Published: 2026-01-12T03:07:26Z

"This release fixes a critical compatibility issue with HTTP backend MCP servers that require session identification headers."

Key Change: Gateway now includes Mcp-Session-Id header during HTTP backend initialization, enabling seamless communication with strict HTTP MCP servers.

v0.0.30 (Major Feature)

Published: 2026-01-11T20:09:38Z

"HTTP MCP Server Support"

Enables integration with pre-launched backend services and remote MCP servers - a significant architectural enhancement.

v0.0.36 (Authentication)

Published: 2026-01-12T01:16:18Z

Implements spec-compliant API key authentication and enhanced /health endpoint returning JSON with protocol version information.

v0.0.26 (Previous Version)

Published: 2026-01-11T18:10:33Z

"MCP Gateway now logs every RPC message sent and received"

Privacy-preserving payload preview and session lifecycle tracking.

Impact Assessment

  • Risk: Medium - Significant new functionality but well-tested through rapid iteration
  • Affected Features:
    • HTTP MCP backend support (new capability)
    • Authentication for remote MCP servers (new capability)
    • Container networking improvements
    • Enhanced logging and debugging
  • Migration: No breaking changes; all updates are additive or fixes

Package Links

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

Copilot AI self-assigned this Jan 12, 2026
Copilot AI and others added 2 commits January 12, 2026 04:17
@pelikhan
Update CLI versions: Claude Code 2.1.5 and MCP Gateway v0.0.39
156cb8a 
Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>
@pelikhan
Recompile workflows with updated CLI versions
4076cbf 
Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>
Copilot AI changed the title [WIP] Update CLI tools to Claude Code 2.1.5 and MCP Gateway v0.0.39 Update CLI versions: Claude Code 2.1.5 and MCP Gateway v0.0.39 Jan 12, 2026
Copilot AI requested a review from pelikhan January 12, 2026 04:29
@pelikhan pelikhan marked this pull request as ready for review January 12, 2026 04:34
@pelikhan pelikhan added the smoke label Jan 12, 2026
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github-actions bot commented Jan 12, 2026 •
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📰 VERDICT: Smoke Copilot has concluded. All systems operational. This is a developing story. 🎤

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github-actions bot commented Jan 12, 2026 •
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🎉 Yo ho ho! Changeset Generator found the treasure and completed successfully! ⚓💰

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github-actions bot commented Jan 12, 2026 •
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🎬 THE END — Smoke Claude MISSION: ACCOMPLISHED! The hero saves the day! ✨

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github-actions bot commented Jan 12, 2026 •
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✨ The prophecy is fulfilled... Smoke Codex has completed its mystical journey. The stars align. 🌟

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github-actions bot commented Jan 12, 2026

Smoke Test Results - Claude Engine

Last 2 Merged PRs:

Test Results:
✅ GitHub MCP - Retrieved PR data successfully
✅ Serena Go - Initialized and available (go1.25.0)
✅ Playwright - Navigated to GitHub homepage (title: "GitHub · Change is constant. GitHub keeps you ahead. · GitHub")
✅ File Writing - Created test file at /tmp/gh-aw/agent/smoke-test-claude-20908196243.txt
✅ Bash Tool - Verified file creation and contents

Overall Status: PASS

AI generated by Smoke Claude

@pelikhan pelikhan merged commit 9b6fbfb into main Jan 12, 2026
36 checks passed
@pelikhan pelikhan deleted the copilot/update-claude-code-version branch January 12, 2026 04:39
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[ca] CLI Version Updates: Claude Code 2.1.5 and MCP Gateway v0.0.39

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