github-mcp-extensions 0.1.4

Extended GitHub MCP server — fills gaps in PR review workflows (apply suggestions, dismiss reviews, reactions, enhanced comment IDs)

github-mcp-extensions

Extended GitHub MCP server that fills gaps in the standard GitHub MCP's PR review workflow.

Designed to run alongside the standard GitHub MCP — it doesn't replace it, it adds the missing tools. Tools appear as mcp__github_extensions__* in your MCP client.

The problem

The standard GitHub MCP server doesn't cover the full PR review workflow. You can't apply code suggestions, dismiss reviews, react to comments, edit review comments, or manage reviewers. This server adds those missing pieces.

Install

pip install github-mcp-extensions

Or run directly:

uvx github-mcp-extensions

Configuration

Add to your MCP client config (Claude Code, Claude Desktop, etc.):

{
  "mcpServers": {
    "github_extensions": {
      "command": "uvx",
      "args": ["github-mcp-extensions"],
      "env": {
        "GITHUB_TOKEN": "ghp_..."
      }
    }
  }
}

Or from git:

{
  "mcpServers": {
    "github_extensions": {
      "command": "uvx",
      "args": ["--from", "git+https://github.com/NorthIsUp/github-mcp-extended", "github-mcp-extensions"],
      "env": {
        "GITHUB_TOKEN": "ghp_..."
      }
    }
  }
}

The token needs repo scope (same as the standard GitHub MCP).

Tools

get_review_comments

Enhanced version of the standard MCP's get_review_comments. Uses GraphQL to return the IDs that write tools actually need.

Parameter	Type	Description
owner	str	Repository owner
repo	str	Repository name
pull_number	int	Pull request number
per_page	int	Threads per page (1-100, default 30)
after	str?	Cursor for pagination

Returns for each thread:

• thread_node_id — GraphQL ID (PRRT_…) for resolve_review_thread
• is_resolved, is_outdated, is_collapsed
• path, line, start_line, diff_side, subject_type

And for each comment:

• id — numeric REST ID for add_reply, apply_suggestion, add_reaction
• node_id — GraphQL ID
• has_suggestion — whether the body contains a \``suggestion` block
• suggestion — the parsed suggestion content (if present)
• review.id — numeric REST ID of the parent review (for dismiss_review)

apply_suggestion

Apply a single \``suggestion` block from a review comment. Parses the suggestion, modifies the file, and commits to the PR branch.

Parameter	Type	Description
owner	str	Repository owner
repo	str	Repository name
pull_number	int	Pull request number
comment_id	int	Numeric REST ID of the comment with the suggestion
commit_message	str?	Custom commit message

apply_suggestions_batch

Apply multiple suggestions in a single commit using the Git Data API (trees + blobs). Avoids the N suggestions → N commits problem.

Parameter	Type	Description
owner	str	Repository owner
repo	str	Repository name
pull_number	int	Pull request number
comment_ids	list[int]	Numeric REST IDs of comments with suggestions
commit_message	str?	Custom commit message

Validates that suggestions don't overlap. Applies changes bottom-up within each file to preserve line offsets.

dismiss_review

Dismiss a pull request review (e.g. a "changes requested" review after addressing feedback).

Parameter	Type	Description
owner	str	Repository owner
repo	str	Repository name
pull_number	int	Pull request number
review_id	int	Numeric REST ID of the review (from get_review_comments → comment.review.id)
message	str	Reason for dismissing

add_reaction

React to a review comment with an emoji. Lightweight acknowledgment without a full reply.

Parameter	Type	Description
owner	str	Repository owner
repo	str	Repository name
comment_id	int	Numeric REST ID of the review comment
reaction	str	One of: +1, -1, laugh, confused, heart, hooray, rocket, eyes

edit_review_comment

Edit the body of an existing review comment.

Parameter	Type	Description
owner	str	Repository owner
repo	str	Repository name
comment_id	int	Numeric REST ID of the review comment
body	str	New comment body (markdown)

request_reviewers

Add or remove reviewers (users and/or teams) on a pull request.

Parameter	Type	Description
owner	str	Repository owner
repo	str	Repository name
pull_number	int	Pull request number
action	str	"add" or "remove"
reviewers	list[str]?	GitHub usernames
team_reviewers	list[str]?	Team slugs

How it fits with the standard GitHub MCP

Action	Standard MCP	This server
Read review threads	pull_request_read(method="get_review_comments") — missing IDs	get_review_comments — full IDs + suggestion metadata
Reply to comment	add_reply_to_pull_request_comment — needs numeric id	(use standard MCP, get id from our get_review_comments)
Resolve thread	resolve_review_thread — needs PRRT_… node_id	(use standard MCP, get thread_node_id from our get_review_comments)
Apply suggestion	not available	apply_suggestion / apply_suggestions_batch
Dismiss review	not available	dismiss_review
React to comment	not available	add_reaction
Edit comment	not available	edit_review_comment
Manage reviewers	not available	request_reviewers

Typical workflow

1. get_review_comments(owner, repo, pull_number)
   → threads with thread_node_id, comment ids, suggestions

2. For each suggestion you want to accept:
   apply_suggestion(owner, repo, pull_number, comment_id)
   — or batch them:
   apply_suggestions_batch(owner, repo, pull_number, [id1, id2, id3])

3. React to acknowledged comments:
   add_reaction(owner, repo, comment_id, "+1")

4. Resolve addressed threads (via standard GitHub MCP):
   resolve_review_thread(thread_node_id)

5. Dismiss the review if all feedback addressed:
   dismiss_review(owner, repo, pull_number, review_id, "All suggestions applied")

Development

git clone https://github.com/NorthIsUp/github-mcp-extended
cd github-mcp-extended
pip install -e .

# Run directly
GITHUB_TOKEN=ghp_... github-mcp-extensions

# Or via MCP dev server
GITHUB_TOKEN=ghp_... uv run mcp dev src/github_mcp_extensions/server.py

Environment variables

Variable	Description
GITHUB_TOKEN	GitHub token (most common, GitHub Actions default)
GITHUB_PERSONAL_ACCESS_TOKEN	Alternative (matches standard GitHub MCP)
GH_TOKEN	Alternative (matches gh CLI)
GITHUB_API_URL	API base URL (default: https://api.github.com). Set for GitHub Enterprise.