A modular MCP server for interacting with the GitHub API. Provides tools for repository management, file operations, and git workflows.
GitHubManager has 21 tools with visible schemas and descriptions in src/tools.py. All tools are registered with @mcp.tool() decorators and have docstrings. However, the implementation shows significant gaps in production-grade quality: (1) Parameter descriptions are present but lack detail on constraints, formats, and valid ranges, e.g., 'Repository type filter' lacks enum declaration; (2) Output schemas are not documented for most tools, callers must infer return structure from implementation; (3) Error handling is entirely absent from visible code, no guidance on recovery, retryability, or actionable next steps; (4) Several tools combine related operations without clear separation (e.g., check_repository_health and analyze_repository_dependencies are distinct concerns but both named as 'check' verbs); (5) Tool names like 'get_github_Individual_file_contents' are inconsistent (mixed case 'Individual'); (6) No evidence of input validation or constraint enforcement in parameter descriptions; (7) Response structure is returned as dict/str but not formally defined. The server demonstrates basic competence, all tools have names, descriptions, and parameter types, but lacks the rigor expected in production tools (detailed param constraints, output schema documentation, error handling patterns).
Detailed dependency analysis for supported languages. Analyzes dependency files like package.json, requirements.txt, etc.
Apply labels to an issue. This is typically called by Claude after analyzing an issue.
Comprehensive repository health check. Scans for missing README, license, security policies, CI/CD setup, dependency management, and other best practices.
Compare two branches and show the differences.
Create a new branch from an existing branch
Create a new file in a repository
Tool name inconsistency: 'get_github_Individual_file_contents' uses mixed case 'Individual', should be 'get_github_individual_file_contents' or 'get_github_file_contents'. Inconsistent naming confuses LLMs when multiple similar tools exist.
Parameter constraints not formalized: 'type' parameter in list_github_repositories lacks enum declaration ('all', 'owner', 'public', 'private'). Similarly, 'sort' and 'order' in search_github_repositories are free-form strings without enum schemas. LLMs hallucinate invalid values without formal constraints.
Output schemas undocumented: Tools return 'dict' or 'str' but callers do not know the field structure. E.g., search_github_repositories returns dict but the response schema (fields like 'repositories', 'total_count', pagination) is not documented. LLMs cannot parse or chain results reliably.
Inferred effective spec: 2026-07-28+.
| Scored | Grade | Overall | Spec posture | Rubric |
|---|---|---|---|---|
| 2026-09-22 | D | 56 | 2026-07-28+ | v2 |
| 2026-03-09 | F | 44 | - | v1 |
Create a pull request
Create a new GitHub repository
Get comprehensive PR review summary with changes analysis, insights, and recommendations. Analyzes files, commits, reviews, and provides actionable feedback.
Get the actual contents of a specific file from a GitHub repository. Perfect for reading source code, configuration files, documentation, etc.
Get comprehensive branch status overview for a repository. Shows all branches with their last commit info, PR status, and merge status.
Get contents of a repository directory or file
Get user's starred repositories
Get comments for an issue to provide additional context for analysis. Useful for understanding the full conversation and current status.
Get contribution analytics for a specific GitHub repository
Get comprehensive contribution analytics for a GitHub user
List user's repositories. Type can be 'all', 'owner', 'public', 'private'
List open PRs that need review with basic info
Smart repository search across GitHub.
Fetch issue details and provide them to Claude for intelligent analysis and categorization. Returns issue data with available labels and analysis prompt for Claude to process.
Update an existing file in a repository
No error handling guidance: Source code shows no try-catch blocks, error classification, or recovery instructions. If a tool fails (e.g., 'Invalid branch name', 'Unauthorized access'), the LLM receives a raw exception with no actionable next step. Production tools must return structured errors with recovery hints.
Parameter descriptions lack format/range details: 'username' parameter is described as 'The username to list repositories for' but does not specify if spaces are allowed, case sensitivity, min/max length, or valid character set. 'days' in get_user_github_analytics defaults to 30 but has no min/max constraint documented.
Inconsistent tool naming conventions: 'smart_issue_triage_tool' and 'get_issue_with_comments_tool' use '_tool' suffix; others do not. Also, verb clarity varies, 'check_github_repository_health' vs 'analyze_github_repository_dependencies' perform similar analysis but use different verbs. Inconsistency increases LLM selection errors.
No pagination details in tool descriptions: Tools like list_github_repositories, get_github_branch_status_overview, and list_open_prs_for_reviewing accept 'limit' but descriptions do not clarify default behavior, max page size, or whether results are sorted. LLMs cannot plan multi-page iteration.
Response structure mismatch risk: Tools return dict/str but fields are not guaranteed to be present or typed. If a tool occasionally omits expected fields (e.g., 'pr_count' in branch status), LLM downstream parsing fails silently or raises exceptions.