github-mcp-extensions 0.1.3

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 has resolve_review_thread and add_reply_to_pull_request_comment, but get_review_comments doesn't return the IDs those tools need:

• No thread node_id (PRRT_…) → resolve_review_thread is unusable
• No comment numeric id → must regex-parse from html_url
• No way to apply \``suggestion` blocks without manual edit/commit/push
• No dismiss, react, edit, or reviewer management

This server fixes all of that.

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_PERSONAL_ACCESS_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_PERSONAL_ACCESS_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_PERSONAL_ACCESS_TOKEN	GitHub token (preferred, matches standard GitHub MCP)
GITHUB_TOKEN	Fallback token
GITHUB_API_URL	API base URL (default: https://api.github.com). Set for GitHub Enterprise.