René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Add MCP tools for GitHub Stacked PRs (gh stack link / sync / view)","articleBody":"## Describe the feature or problem you’d like to solve\n\nAgents that manage **stacked / dependent PRs** (each PR’s `base` is the branch below it) can already create and re-base-point individual PRs via `create_pull_request` / `update_pull_request`, but they have **no first-class way** to:\n\n1. Discover or read a GitHub **native stack** (the stack object / annotations created by `gh stack link` / `gh stack submit`)\n2. Create or update that stack as a unit\n3. Cascade-rebase / sync the tower when trunk moves (`gh stack sync` / `gh stack rebase`)\n4. Merge bottom-up with stack-aware ordering\n\nToday the only path to native stacks is the `gh stack` CLI extension (`github/gh-stack`), which many agent environments intentionally don’t expose (token stays on a host proxy; container `gh` is stubbed; agents talk to GitHub through this MCP).\n\n## Proposed solution\n\nAdd a small **stack toolset** (or extend `pull_requests`) that mirrors the operations agents already need from `gh stack`, without shelling out:\n\n| Tool | Purpose |\n|---|---|\n| `list_stacks` / `get_stack` | Resolve a stack by number, PR number, or head branch; return ordered PRs + trunk |\n| `link_stack` | Create/update a stack from an ordered list of PR numbers or branches (`gh stack link`) |\n| `update_stack` | Reorder / reparent / drop layers |\n| `sync_stack` | Cascade-rebase onto trunk + push with lease semantics (`gh stack sync`) — or return structured rebase instructions if server-side git is out of scope |\n| `merge_stack` | Merge bottom-up, stopping on the first non-mergeable layer |\n\nMinimum useful v1: **read + link** (`get_stack`, `link_stack`). Agents can already do Path-B base-chaining with `update_pull_request(base=…)`; what’s missing is the **native stack object** and a single call that wires N PRs correctly.\n\n## Example\n\n```text\nlink_stack(\n  owner: \"org\",\n  repo: \"app\",\n  base: \"develop\",          # trunk\n  pull_numbers: [7609, 7797, 7810, 7815, …]  # bottom → top\n)\n→ { stack_number: 7928, prs: [...] }\n\nget_stack(owner, repo, stack_number: 7928)\n→ ordered layers with number, head, base, mergeable, reviewDecision","author":{"url":"https://github.com/kirill578","@type":"Person","name":"kirill578"},"datePublished":"2026-07-18T15:00:16.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/2905/github-mcp-server/issues/2905"}