@trashcodermaker/pi-pr-review-handler

Pi package — systematically process GitHub PR review comments: triage, fix, reply.

This is the Pi-specific package. Pi auto-discovers the skill after install.

Looking for the generic package for other agent harnesses (Claude Code, Cursor, Gemini CLI, OpenCode, …)? See @trashcodermaker/pr-review-handler.

Overview

Code review is part of every healthy PR workflow, but turning review threads into actual fixes and thoughtful replies can be tedious and error-prone.

PR Review Handler automates that workflow. It fetches unresolved GitHub PR review threads, evaluates each comment for validity, applies minimal code fixes, drafts replies that match the reviewer's language and tone, and optionally pushes changes and requests re-review.

Install

pi install npm:@trashcodermaker/pi-pr-review-handler

Pi auto-discovers the skill under skills/pr-review-handler/.

Syncing project agents

Project agents (.agents/pr-review-handler/{triage,implementation}.md) are generated artifacts synced from this package. Use the /pi-pr-review-handler-sync command to sync:

• First run: creates .agents/pr-review-handler/ with latest templates
• After upgrade: overwrites with latest templates (also cleans stale .agents/agents/pr-review-handler/ from v1.2.3)
• Does NOT touch .agents/agents/pr-review/ (manual, if present)

The command is a Pi extension bundled with this package — pi install auto-loads it. No SKILL.md auto-cp; syncing is explicit and user-triggered.

What you get

node_modules/@trashcodermaker/pi-pr-review-handler/
└── skills/
    └── pi-pr-review-handler/
        ├── SKILL.md              # the skill instructions
        └── agents/
            ├── triage-agent.md          # spec (inline mode)
            ├── implementation-agent.md  # spec
            └── pr-review-handler/       # project agent templates (pi-subagents)
                ├── triage.md
                └── implementation.md

Recommended companion tools

pi-subagents (recommended)

Pi has no native subtask mechanism. With pi-subagents installed, the skill auto-creates project agents and dispatches them via the subagent tool (parallel triage, serial implementation). Without it, runs inline.

pi install npm:pi-subagents

The skill auto-creates project agents (pr-review-handler.triage, pr-review-handler.implementation) in Phase 0 and dispatches them via the subagent tool.

CodeGraph (optional, enhances agent quality)

The Triage and Implementation agents reference mcp:codegraph in their tool list. CodeGraph is a semantic code intelligence MCP server — symbol lookup, call-edge traversal, and blast-radius analysis beyond grep.

Why: triage uses it to find all callers accurately (affected_files); implementation traces references that grep might miss.

Install: see the CodeGraph repo. codegraph install auto-configures Claude Code, Cursor, Codex, etc. — for Pi, add the CodeGraph MCP server to your Pi MCP configuration manually. Falls back to grep/find if not installed.

How it works

The handler runs a multi-phase pipeline. Each phase has a clear responsibility, and the flow stops at checkpoints where human confirmation is requested.

Phase 0: Setup
Phase 1: Triage        ← parallel, read-only
Phase 2: Fix           ← serial, minimal changes
Phase 3: Reply         ← orchestrator drafts inline
Phase 4: Post & Push
Phase 5: Report

Phase 0: Setup

Identifies the target PR from the current branch or an explicit PR link, fetches unresolved review threads, and fetches review-level feedback. This phase prepares everything needed for triage without modifying code.

Phase 1: Triage

Reads the referenced code and each review thread, then classifies every comment as:

• valid-fix — a real issue that requires code changes
• valid-nofix — the concern is valid, but no code change is needed
• invalid — the premise doesn't apply to current code, or the suggested fix would be harmful

With pi-subagents installed, triage runs in parallel — one pr-review-handler.triage project agent per thread. Without it, runs inline.

[!TIP] Triage is intentionally conservative. If a comment is unclear, mark it invalid with the reason unclear — needs human review.

Phase 2: Fix

For each valid-fix thread, a specialized implementation agent applies the smallest possible change that satisfies the review. The agent traces references first, updates callers and tests when signatures change, and avoids unrelated cleanup or refactors.

All fixes are committed as a single commit, but never pushed during this phase.

After all fixes, the pipeline runs the project's type checker or equivalent verification (auto-detected: tsc for TypeScript, ruff/mypy for Python, go build for Go, cargo check for Rust, etc.). If it fails, the pipeline does git reset --soft to unstage the commit, fixes the issue, and recommits before continuing.

Phase 3: Reply

The orchestrator drafts one reply per thread based on:

• Original thread data
• Triage verdicts
• Actual diff: git diff origin/{branch}...HEAD
• Failure records from Phase 2

Replies are matched to the reviewer's language and tone, kept concise, and never defensive.

Phase 4: Post & Push

Approved replies are posted to GitHub. Every thread that received a reply is then auto-resolved via the GraphQL resolveReviewThread mutation (simulates clicking "Resolve conversation" on the PR page). Finally, the single review-fix commit is pushed.

Optionally, the handler can also:

• Request re-review from the original reviewers
• Dismiss resolved review threads with an "Addressed" message

Phase 5: Report

A concise summary is printed at the end:

✅ Triage: N/N threads processed
✅ Fixes: M/K valid-fix threads applied (committed locally, pushed)
   ❌ Failed: {thread} — {reason}
✅ Replies: P/P threads drafted and posted
✅ Resolved: Q/P conversations resolved (R skipped — already resolved)

Usage

Once installed, invoke it from your Pi session with natural language:

• "帮我处理这个 PR 的 review：https://github.com/owner/repo/pull/123"
• "回复 reviewer 的评论"
• "看看 PR 里那些 unresolved threads"
• "review 提的问题要修一下"
• "CI 过了，但 review 还没回"
• "handle the reviews on my PR"
• "someone left comments on my PR"

Or trigger the skill directly:

/skill:pr-review-handler

Requirements

• GitHub CLI (gh) installed and authenticated
• A Git working tree clean enough to create review-fix commits
• A project with a type checker or linter (TypeScript, Python, Go, Rust, etc.) for the post-fix verification — auto-detected, skipped if none recognized

Supported platforms

| Platform | Support | | --- | --- | | Pi | ✅ This package. Uses pr-review-handler.triage / pr-review-handler.implementation project agents via pi-subagents (auto-created in Phase 0); inline fallback if not installed. | | Other harnesses (Claude Code, Cursor, Gemini CLI, OpenCode, …) | ✅ Use @trashcodermaker/pr-review-handler instead |

License

MIT