Build and manage the code knowledge graph. Actions: build (full_rebuild, base, repo_root), update (base, repo_root), stats (repo_root), embed (repo_root), export (format, output_path, repo_root), summarize (max_nodes, repo_root). Use help tool for full docs.

Query the code knowledge graph for relationships, search, and impact analysis. Actions: query (pattern, target), search (search_query), impact (changed_files|base), large_functions (min_lines), spot_check (n -- random callsite snippets from last callers_of/callees_of/inheritors_of/importers_of result), renamed_in_diff (base -- symbols whose callsite line shifted vs base ref), diff (from_sha, to_sha -- nodes added/removed/modified between two commit SHAs). Use help tool for full docs.

Generate token-efficient review context for code changes. Actions: context (default — auto-detects changed files from git diff, returns structural summary, impacted nodes, source snippets, and review guidance), delta (from_sha, to_sha — wraps the query.diff buckets and, when show_line_shifts=true, surfaces qualified_names whose line_start moved between the two commits for refactor auditing). Context params: changed_files (auto), max_depth=2, include_source=true, max_lines_per_file=200, base='HEAD~1', repo_root (auto). Delta params: from_sha, to_sha, show_line_shifts=false, repo, repo_root. Use help tool for full docs.

Server configuration, status, and credential setup. Actions: status (show state), set (key, value -- keys: log_level), cache_clear (wipe embeddings), setup_status (credential state), setup_start (relay browser setup), setup_skip (local mode), setup_reset (clear credentials), setup_complete (re-resolve from env). Use help tool for full docs.

Get full documentation for any tool. Topics: graph | query | review | config | security | recipes. Use when compressed descriptions are insufficient.

Security scanning over the code knowledge graph. Actions: scan (engine='heuristic'|'semgrep', repo_root), report (format='json'|'sarif', repo_root), suppress (rule_id, remove=false, repo_root), rule_list (engine='heuristic'|'semgrep'). Use help tool for full docs.

Open the relay configuration form for better-code-review-graph in the user's browser. Returns the relay URL, whether the browser launched, and the current status.