Change risk analysis — detect blast radius, risk score, and breaking changes from git diffs. Use before any PR or merge. Crown jewel: detect_changes_tool. Triggers on: "review PR", "check impact", "blast radius", "what breaks", "safe to merge"
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Structural change safety gate. Builds a SHA-256 AST graph from source code, then on any diff computes:
| Question | Tool |
|---|---|
| Is this change safe to ship? | mcp__code-review-graph__detect_changes_tool(base_branch="main") |
| Build/rebuild the graph | mcp__code-review-graph__build_graph_tool(repo_path=".") |
| Graph status + stats | mcp__code-review-graph__get_graph_info_tool |
| What changed vs main? | mcp__code-review-graph__get_diff_tool(base_branch="main") |
| Node details | mcp__code-review-graph__get_node_tool(node_id="<id>") |
| Node neighbors | mcp__code-review-graph__get_neighbors_tool(node_id="<id>", depth=2) |
| Find by name | mcp__code-review-graph__search_nodes_tool(query="AuthService") |
| Community structure | mcp__code-review-graph__get_communities_tool |
| Critical path | mcp__code-review-graph__get_critical_path_tool(source="<id>", target="<id>") |
| Dependency chain | mcp__code-review-graph__get_dependency_chain_tool(node_id="<id>") |
build_graph_tool(repo_path=".") — first run only (or after major refactor)detect_changes_tool(base_branch="main") — risk score + blast radiusget_dependency_chain_tool on the highest-risk nodeget_neighbors_tool| Score | Meaning | Action |
|---|---|---|
| 0–25 | Low risk | Review and ship |
| 26–50 | Moderate | Verify blast radius manually |
| 51–75 | High | Write tests for affected nodes |
| 76–100 | Critical | Full review + stakeholder sign-off |
First build: build_graph_tool(repo_path=".") — ~6s for 500 files, ~30s for large repos.
Incremental: git post-commit hook runs code-review-graph update automatically. <2s on any commit.
After major refactor: build_graph_tool(repo_path=".", force_rebuild=True) — forces full re-index.
MCP server: Started automatically by Claude Code when mcp__code-review-graph__* tools are invoked.
Started via uvx code-review-graph serve — isolated environment, no PATH issues.
Core: build_graph_tool, detect_changes_tool, get_graph_info_tool, get_diff_tool
Navigation: get_node_tool, get_neighbors_tool, search_nodes_tool, get_critical_path_tool
Analysis: get_dependency_chain_tool, get_communities_tool, get_impact_analysis_tool
Queries: get_nodes_by_type_tool, get_nodes_by_file_tool, get_edges_tool, get_entry_points_tool
Metrics: get_complexity_metrics_tool, get_coupling_metrics_tool, get_cohesion_metrics_tool
Review: get_review_summary_tool, get_change_summary_tool, get_risk_breakdown_tool
.code-review-graph/graph.db doesn't exist — run build_graph_tool before first useuvx code-review-graph serve needs uv installed (pip install uv or brew install uv)build_graph_tool(force_rebuild=True) if graph seems stale还没有评价。欢迎分享你的使用感受。
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Route a codebase question to the right tool — structural graph, semantic search, or risk analysis. Use when you need to find or understand code without knowing exact file names.
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Auto-configure CLAUDE.md and claude/ knowledge docs for a new project. Use when setting up Brain Bootstrap in a new repository. Discovers the codebase, fills in templates, and writes project-specific configuration.
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Use before any new feature, component, or behavioral change — when you need to explore requirements and design before writing code
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Activate safety guards for the session. Use /careful before critical operations — blocks rm -rf, DROP TABLE, git push --force, kubectl delete namespace, docker system prune via PreToolUse hook.
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Generate a user-facing changelog from git commits — categorize, filter noise, translate to user language. Runs in isolated fork context.
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Save session state before context gets full or before ending. Writes current task state, branch, and loaded docs to claude/tasks/todo.md so the next session can resume cleanly.
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