GitHub MCP Server 0.26.0

GitHub MCP Server gets a touch of gloss 💅

For clients that support icons (part of the newest MCP specification) we now provide them:

Main Features

🎨 Octicon Icons for Tools, Resources, and Prompts

MCP clients that support the new icons specification will now display GitHub's Octicon icons alongside tools and resources, making it easier to identify capabilities at a glance.

🏗️ Inventory Pattern Architecture

A new internal architecture introduces the Inventory pattern with builder, filtering, and per-request optimization. This lays groundwork for better performance and configurability, especially for remote server deployments.

🚩 Feature Flag Support & Consolidated Actions Toolsets

Added infrastructure for feature flag-based tool enablement, plus a consolidated actions toolset for better organization of GitHub Actions-related tools gated by a feature flag.

• --features cli flag or GITHUB_MCP_FEATURES via ENV.

🔧 Bug Fixes

• Fixed create_or_update SHA failures - Resolved issues where file updates could fail due to SHA mismatches
• Path parameter now optional - Fixed incorrect required parameter validation

📚 Documentation

• New Antigravity installation guide
• New tool renaming guide for handling deprecated tool names

What's Changed

• Fix create_or_update SHA-related failures by @almaleksia in #1621
• docs: Add Antigravity installation guide by @ManoloZocco in #1549
• Update docs to include tool renaming guide by @tommaso-moro in #1623
• Update pr template by @JoannaaKL in #1605
• Chore: Add testify-based HTTP mocking infrastructure and pilot migration by @Copilot in #1606
• build(deps): bump actions/cache from 4 to 5 by @dependabot[bot] in #1609
• refactor: Introduce Inventory pattern with builder, filtering, and per-request optimization by @SamMorrowDrums in #1589
• Fix: path param should be optional by @almaleksia in #1631
• fix: track HTTP status code errors in context for observability by @SamMorrowDrums in #1630
• feat: Add Octicon icons to MCP tools, resources, and prompts by @SamMorrowDrums in #1603
• Update docs generation to populate correct docs, remove redundant docs by @tommaso-moro in #1634
• refactor: inject deps via context instead of closures by @SamMorrowDrums in #1640
• Partial migration from go-github-mock to testify-based mocks by @Copilot in #1629
• Add ff support and consolidated actions toolsets by @mattdholloway in #1622

New Contributors

• @ManoloZocco made their first contribution in #1549

Full Changelog: v0.25.0...v0.26.0

GitHub MCP Server 0.26.0-rc.3

Rename registry.Registry to inventory.Inventory in order to avoid a namespace collision with MCP Registry
Full Changelog: v0.26.0-rc.2...v0.26.0-rc.3

GitHub MCP Server 0.26.0-rc.2

v0.26.0-rc.2 Release Notes

Fixes

• fix(get_file_contents): Restore correct implementation from #1582

  • Fixed control flow to resolve git reference SHA before calling GetContents API
  • Restored matchFiles helper function for proper fallback when files aren't found directly
  • Ensures proper URI construction with resolved SHA (e.g., repo://owner/repo/<sha>/contents/path)

• chore: Update server.json schema to 2025-12-11

  • Fixed MCP registry publish workflow by updating to non-deprecated schema
  • Removed status field (now managed by registry)

Summary

This pre-release fixes a regression in get_file_contents that was introduced during the registry refactor. The tool was returning empty responses because:

1. The resolved SHA wasn't being applied before the GitHub Contents API call
2. The matchFiles fallback logic was incorrectly restructured

Both issues are now fixed, restoring the behavior from PR #1582.

Full Changelog: v0.26.0-rc.1...v0.26.0-rc.2

GitHub MCP Server 0.26.0-rc.1

Highlights

🏗️ Registry Pattern Refactoring

• Migrate context_tools to new ServerTool pattern (#1590)
• Migrate notifications.go to NewTool pattern (#1592)

These PRs are part of a larger refactoring effort moving all tools to a new ServerTool pattern with typed dependency injection. This improves code maintainability and enables better testability.

🐛 Bug Fix

• create_or_update_file - SHA is now optional; if not supplied, the tool automatically retrieves the original SHA (#1621)

📚 Documentation

• Add Antigravity installation guide (#1549)
• Add tool renaming guide (#1623)

---

What's Changed

• Fix create_or_update SHA-related failures by @almaleksia in #1621
• docs: Add Antigravity installation guide by @ManoloZocco in #1549
• Update docs to include tool renaming guide by @tommaso-moro in #1623
• Migrate context_tools to new ServerTool pattern by @SamMorrowDrums in #1590
• refactor(notifications): migrate notifications.go to NewTool pattern by @SamMorrowDrums in #1592

New Contributors

• @ManoloZocco made their first contribution in #1549

Full Changelog: v0.25.0...v0.26.0-rc.1

GitHub MCP Server 0.25.0

What's New

We have released a range of improvements to our tools which will improve how models use the GitHub MCP Server! We have also fixed a range bugs.

What's Changed

• Correct lower-case issue state by @almaleksia in #1567
• Trim leading slash in path parameter by @almaleksia in #1569
• Add support for safe tool renaming by @tommaso-moro in #1563
• fix: indent multi-line descriptions in generated docs by @SamMorrowDrums in #1576
• fix: update get-me script for go-SDK MCP protocol by @SamMorrowDrums in #1555
• Turn off default toolset when in dynamic mode by @tommaso-moro in #1401
• fix: Handle architecture-specific license dependencies by @SamMorrowDrums in #1581
• Improvements & refactoring of get_file_contents by @almaleksia in #1582
• adding review comments grouped as threads by @tonytrg in #1554

Full Changelog: v0.24.1...v0.25.0

GitHub MCP Server 0.24.1

Changelog

• 82c4930 fix: include empty properties in get_me schema for OpenAI compatibility

GitHub MCP Server 0.24.0

What's New

• Move SDK to modelcontextprocol/go-sdk #1428
• Added Repository Resource Completion handler #1493

Important

This release includes a large change from mark3labs/mcp-go to modelcontextprotocol/go-sdk. This should be transparent to end users, but please report regressions if you encounter any.

What's Changed

• Convert to modelcontextprotocol/go-sdk by @omgitsads, @LuluBeatson & @SamMorrowDrums in #1428
• Add resource completion for GitHub repository resources by @omgitsads & @almaleksia in #1493
• Add AI issue assessment workflow with github/ai-assessment-comment-labeler by @Copilot in #1498
• Add documentation for X-MCP-Tools by @tommaso-moro in #1495
• Add ai_review_label to ai-issue-assessment.yml by @Copilot in #1501
• Check if the tool is NOT read only before skipping it in read-only mode by @omgitsads in #1514

Full Changelog: v0.23.0...v0.24.0

GitHub MCP Server 0.23.0

New Feature

• Introducing tool-specific configuration support in the GitHub MCP Server: #1394

What's Changed

• replacing all with default by @tonytrg in #1489
• build(deps): bump actions/checkout from 5 to 6 by @dependabot[bot] in #1480
• Dont filter content from Copilot by @JoannaaKL in #1464
• Tommy/tool-specific-config-support by @tommaso-moro in #1394

Full Changelog: v0.22.0...v0.23.0

GitHub MCP Server 0.23.0 - Go SDK

⚠️ PRE RELEASE ⚠️

This release migrates the GitHub MCP Server from mark3labs/mcp-go to the official modelcontextprotocol/go-sdk library. While the changes are primarily structural—focused on tool schema syntax rather than behavioral changes—the migration touches a significant amount of code.

We're looking for community testing before promoting this to a stable release. If you encounter any issues, please report them in the discussions thread.

What's Changed

• Migrate gists toolset to modelcontextprotocol/go-sdk by @Copilot in #1431
• Migrate code-scanning toolset to modelcontextprotocol/go-sdk by @Copilot in #1430
• Migrate security_advisories toolset to modelcontextprotocol/go-sdk by @Copilot in #1434
• Migrate secret_scanning toolset to modelcontextprotocol/go-sdk by @Copilot in #1436
• Migrate git toolset to modelcontextprotocol/go-sdk by @Copilot in #1432
• Migrate labels toolset to modelcontextprotocol/go-sdk by @Copilot in #1433
• Migrate issues toolset to modelcontextprotocol/go-sdk by @Copilot in #1440
• Migrate dependabot toolset to modelcontextprotocol/go-sdk by @Copilot in #1429
• Migrate Repository Resources to the Go SDK by @omgitsads in #1457
• Fix handling of multi path resources by @omgitsads in #1458
• Migrate dynamic toolset to modelcontextprotocol/go-sdk by @Copilot in #1450
• Migrate discussions toolset to modelcontextprotocol/go-sdk by @Copilot in #1448
• Migrate notifications toolset to modelcontextprotocol/go-sdk by @Copilot in #1449
• Migrate pull_requests toolset to Go SDK by @LuluBeatson in #1466
• Migrate actions toolset to modelcontextprotocol/go-sdk by @Copilot in #1446
• Migrate 4 Search Tools to Go SDK by @LuluBeatson in #1468
• Migrate projects toolset to modelcontextprotocol/go-sdk by @Copilot in #1475
• Enable empty experiments toolset in Go SDK by @omgitsads in #1477
• Migrate repos toolset to modelcontextprotocol/go-sdk by @Copilot in #1445
• Update copilot instructions to reference modelcontextprotocol/go-sdk by @Copilot in #1478
• Migrate e2e tests to Go SDK by @SamMorrowDrums in #1479

Full Changelog: v0.22.0...v0.23.0-gosdk

GitHub MCP Server 0.22.0

What's Changed

• Add Go SDK Migrator agent by @omgitsads in #1424
• Add copilot instructions by @Copilot in #1376
• Add installation guide for OpenAI Codex by @jamesmontemagno in #1340
• Report error when API silently fails to add review comment by @almaleksia in #1441
• adding remote server header for lockdown configuration by @tonytrg in #1417
• Instruct LLM to use pull request template when creating PRs by @almaleksia in #1442
• Add in memory cache for lockdown mode by @JoannaaKL in #1416
• Add go report card to the Readme by @JoannaaKL in #1462
• Delete package configuration from server.json (temporarily) by @almaleksia in #1474

New Contributors

• @jamesmontemagno made their first contribution in #1340

Full Changelog: v0.21.0...v0.22.0