# GitHub Developer Platform

A variant-aware MCP server that exposes different tool sets for different agent types, mirroring the GitHub MCP Server pattern described in SEP-2053's Prior Art section.

**Pattern demonstrated:** Different tool sets per variant with custom ranking.

## Variants

| Variant | Tools | Description |
|---|---|---|
| `code-review` | `list_pull_requests`, `get_diff`, `add_review_comment` | PR operations and code review |
| `project-management` | `list_issues`, `create_issue`, `add_label` | Issue tracking and labels |
| `security-readonly` | `list_security_alerts`, `get_advisory` | Security scanning (read-only) |
| `ci-automation` | `list_workflow_runs`, `trigger_workflow` | CI/CD workflow management |

## Custom Ranking

Clients send a `"domain"` hint during initialization. The ranking function boosts variants whose `domain` hint matches the client's requested domain, falling back to priority order.

## Run

```bash
go run ./examples/server/github
```

Connect any MCP client to `http://localhost:8080`.

## Demo

See [mcp-inspector-variants-demo.mp4](mcp-inspector-variants-demo.mp4) for a walkthrough using MCP Inspector.