diff --git a/cmd/bd/daemon.go b/cmd/bd/daemon.go
index c41f2435..1fa1df28 100644
--- a/cmd/bd/daemon.go
+++ b/cmd/bd/daemon.go
@@ -271,6 +271,18 @@ func runDaemonLoop(interval time.Duration, autoCommit, autoPush bool, logPath, p
 	defer func() { _ = store.Close() }()
 	log.log("Database opened: %s", daemonDBPath)
 
+	// Hydrate from multi-repo if configured
+	hydrateCtx := context.Background()
+	if results, err := store.HydrateFromMultiRepo(hydrateCtx); err != nil {
+		log.log("Error: multi-repo hydration failed: %v", err)
+		os.Exit(1)
+	} else if results != nil {
+		log.log("Multi-repo hydration complete:")
+		for repo, count := range results {
+			log.log("  %s: %d issues", repo, count)
+		}
+	}
+
 	// Validate database fingerprint
 	if err := validateDatabaseFingerprint(store, &log); err != nil {
 		if os.Getenv("BEADS_IGNORE_REPO_MISMATCH") != "1" {
diff --git a/cmd/bd/init.go b/cmd/bd/init.go
index 77838d19..278facda 100644
--- a/cmd/bd/init.go
+++ b/cmd/bd/init.go
@@ -596,6 +596,14 @@ func createConfigYaml(beadsDir string, noDbMode bool) error {
 # Debounce interval for auto-flush (can also use BEADS_FLUSH_DEBOUNCE)
 # flush-debounce: "5s"
 
+# Multi-repo configuration (experimental - bd-307)
+# Allows hydrating from multiple repositories and routing writes to the correct JSONL
+# repos:
+#   primary: "."  # Primary repo (where this database lives)
+#   additional:   # Additional repos to hydrate from (read-only)
+#     - ~/beads-planning  # Personal planning repo
+#     - ~/work-planning   # Work planning repo
+
 # Integration settings (access with 'bd config get/set')
 # These are stored in the database, not in this file:
 # - jira.url
diff --git a/internal/storage/sqlite/multirepo_export.go b/internal/storage/sqlite/multirepo_export.go
new file mode 100644
index 00000000..180aa072
--- /dev/null
+++ b/internal/storage/sqlite/multirepo_export.go
@@ -0,0 +1,184 @@
+// Package sqlite implements multi-repo export for the SQLite storage backend.
+package sqlite
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"sort"
+
+	"github.com/steveyegge/beads/internal/config"
+	"github.com/steveyegge/beads/internal/types"
+)
+
+// ExportToMultiRepo writes issues to their respective JSONL files based on source_repo.
+// Issues are grouped by source_repo and written atomically to each repository.
+// Returns a map of repo path -> exported issue count.
+// Returns nil with no error if not in multi-repo mode (backward compatibility).
+func (s *SQLiteStorage) ExportToMultiRepo(ctx context.Context) (map[string]int, error) {
+	// Get multi-repo config
+	multiRepo := config.GetMultiRepoConfig()
+	if multiRepo == nil {
+		// Single-repo mode - not an error, just no-op
+		return nil, nil
+	}
+
+	// Get all issues
+	allIssues, err := s.SearchIssues(ctx, "", types.IssueFilter{})
+	if err != nil {
+		return nil, fmt.Errorf("failed to query issues: %w", err)
+	}
+
+	// Populate dependencies for all issues (avoid N+1)
+	allDeps, err := s.GetAllDependencyRecords(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get dependencies: %w", err)
+	}
+	for _, issue := range allIssues {
+		issue.Dependencies = allDeps[issue.ID]
+	}
+
+	// Populate labels for all issues
+	for _, issue := range allIssues {
+		labels, err := s.GetLabels(ctx, issue.ID)
+		if err != nil {
+			return nil, fmt.Errorf("failed to get labels for %s: %w", issue.ID, err)
+		}
+		issue.Labels = labels
+	}
+
+	// Group issues by source_repo
+	issuesByRepo := make(map[string][]*types.Issue)
+	for _, issue := range allIssues {
+		sourceRepo := issue.SourceRepo
+		if sourceRepo == "" {
+			sourceRepo = "." // Default to primary repo
+		}
+		issuesByRepo[sourceRepo] = append(issuesByRepo[sourceRepo], issue)
+	}
+
+	results := make(map[string]int)
+
+	// Export primary repo
+	if issues, ok := issuesByRepo["."]; ok {
+		repoPath := multiRepo.Primary
+		if repoPath == "" {
+			repoPath = "."
+		}
+		count, err := s.exportToRepo(ctx, repoPath, issues)
+		if err != nil {
+			return nil, fmt.Errorf("failed to export primary repo: %w", err)
+		}
+		results["."] = count
+	}
+
+	// Export additional repos
+	for _, repoPath := range multiRepo.Additional {
+		issues := issuesByRepo[repoPath]
+		if len(issues) == 0 {
+			// No issues for this repo - write empty JSONL to keep in sync
+			count, err := s.exportToRepo(ctx, repoPath, []*types.Issue{})
+			if err != nil {
+				return nil, fmt.Errorf("failed to export repo %s: %w", repoPath, err)
+			}
+			results[repoPath] = count
+			continue
+		}
+
+		count, err := s.exportToRepo(ctx, repoPath, issues)
+		if err != nil {
+			return nil, fmt.Errorf("failed to export repo %s: %w", repoPath, err)
+		}
+		results[repoPath] = count
+	}
+
+	return results, nil
+}
+
+// exportToRepo writes issues to a single repository's JSONL file atomically.
+func (s *SQLiteStorage) exportToRepo(ctx context.Context, repoPath string, issues []*types.Issue) (int, error) {
+	// Expand tilde in path
+	expandedPath, err := expandTilde(repoPath)
+	if err != nil {
+		return 0, fmt.Errorf("failed to expand path: %w", err)
+	}
+
+	// Get absolute path
+	absRepoPath, err := filepath.Abs(expandedPath)
+	if err != nil {
+		return 0, fmt.Errorf("failed to get absolute path: %w", err)
+	}
+
+	// Construct JSONL path
+	jsonlPath := filepath.Join(absRepoPath, ".beads", "issues.jsonl")
+
+	// Ensure .beads directory exists
+	beadsDir := filepath.Dir(jsonlPath)
+	if err := os.MkdirAll(beadsDir, 0755); err != nil {
+		return 0, fmt.Errorf("failed to create .beads directory: %w", err)
+	}
+
+	// Sort issues by ID for consistent output
+	sort.Slice(issues, func(i, j int) bool {
+		return issues[i].ID < issues[j].ID
+	})
+
+	// Write atomically using temp file + rename
+	tempPath := fmt.Sprintf("%s.tmp.%d", jsonlPath, os.Getpid())
+	f, err := os.Create(tempPath)
+	if err != nil {
+		return 0, fmt.Errorf("failed to create temp file: %w", err)
+	}
+
+	// Ensure cleanup on failure
+	defer func() {
+		if f != nil {
+			_ = f.Close()
+			_ = os.Remove(tempPath)
+		}
+	}()
+
+	// Write JSONL
+	encoder := json.NewEncoder(f)
+	for _, issue := range issues {
+		if err := encoder.Encode(issue); err != nil {
+			return 0, fmt.Errorf("failed to encode issue %s: %w", issue.ID, err)
+		}
+	}
+
+	// Close before rename
+	if err := f.Close(); err != nil {
+		return 0, fmt.Errorf("failed to close temp file: %w", err)
+	}
+	f = nil // Prevent defer cleanup
+
+	// Atomic rename
+	if err := os.Rename(tempPath, jsonlPath); err != nil {
+		_ = os.Remove(tempPath)
+		return 0, fmt.Errorf("failed to rename temp file: %w", err)
+	}
+
+	// Set file permissions
+	if err := os.Chmod(jsonlPath, 0644); err != nil {
+		// Non-fatal
+		if os.Getenv("BD_DEBUG") != "" {
+			fmt.Fprintf(os.Stderr, "Debug: failed to set permissions on %s: %v\n", jsonlPath, err)
+		}
+	}
+
+	// Update mtime cache for this repo
+	fileInfo, err := os.Stat(jsonlPath)
+	if err == nil {
+		_, err = s.db.ExecContext(ctx, `
+			INSERT OR REPLACE INTO repo_mtimes (repo_path, jsonl_path, mtime_ns, last_checked)
+			VALUES (?, ?, ?, datetime('now'))
+		`, absRepoPath, jsonlPath, fileInfo.ModTime().UnixNano())
+		if err != nil && os.Getenv("BD_DEBUG") != "" {
+			fmt.Fprintf(os.Stderr, "Debug: failed to update mtime cache for %s: %v\n", absRepoPath, err)
+		}
+	}
+
+	return len(issues), nil
+}
diff --git a/internal/storage/sqlite/multirepo_test.go b/internal/storage/sqlite/multirepo_test.go
index e186d1d6..e00d993a 100644
--- a/internal/storage/sqlite/multirepo_test.go
+++ b/internal/storage/sqlite/multirepo_test.go
@@ -373,3 +373,139 @@ func TestImportJSONLFile(t *testing.T) {
 		}
 	})
 }
+
+func TestExportToMultiRepo(t *testing.T) {
+	t.Run("returns nil in single-repo mode", func(t *testing.T) {
+		store, cleanup := setupTestDB(t)
+		defer cleanup()
+
+		// Initialize config fresh
+		if err := config.Initialize(); err != nil {
+			t.Fatalf("failed to initialize config: %v", err)
+		}
+
+		// Clear any multi-repo config from previous tests
+		config.Set("repos.primary", "")
+		config.Set("repos.additional", nil)
+
+		ctx := context.Background()
+		results, err := store.ExportToMultiRepo(ctx)
+		if err != nil {
+			t.Errorf("unexpected error in single-repo mode: %v", err)
+		}
+		if results != nil {
+			t.Errorf("expected nil results in single-repo mode, got %v", results)
+		}
+	})
+
+	t.Run("exports issues to correct repos", func(t *testing.T) {
+		store, cleanup := setupTestDB(t)
+		defer cleanup()
+
+		// Initialize config
+		if err := config.Initialize(); err != nil {
+			t.Fatalf("failed to initialize config: %v", err)
+		}
+
+		// Create temporary repos
+		primaryDir := t.TempDir()
+		additionalDir := t.TempDir()
+
+		// Create .beads directories
+		primaryBeadsDir := filepath.Join(primaryDir, ".beads")
+		additionalBeadsDir := filepath.Join(additionalDir, ".beads")
+		if err := os.MkdirAll(primaryBeadsDir, 0755); err != nil {
+			t.Fatalf("failed to create primary .beads dir: %v", err)
+		}
+		if err := os.MkdirAll(additionalBeadsDir, 0755); err != nil {
+			t.Fatalf("failed to create additional .beads dir: %v", err)
+		}
+
+		// Set multi-repo config
+		config.Set("repos.primary", primaryDir)
+		config.Set("repos.additional", []string{additionalDir})
+
+		ctx := context.Background()
+
+		// Create issues with different source_repos
+		issue1 := &types.Issue{
+			ID:         "bd-primary-1",
+			Title:      "Primary Issue",
+			Status:     types.StatusOpen,
+			Priority:   1,
+			IssueType:  types.TypeTask,
+			CreatedAt:  time.Now(),
+			UpdatedAt:  time.Now(),
+			SourceRepo: ".",
+		}
+		issue1.ContentHash = issue1.ComputeContentHash()
+
+		issue2 := &types.Issue{
+			ID:         "bd-additional-1",
+			Title:      "Additional Issue",
+			Status:     types.StatusOpen,
+			Priority:   1,
+			IssueType:  types.TypeTask,
+			CreatedAt:  time.Now(),
+			UpdatedAt:  time.Now(),
+			SourceRepo: additionalDir,
+		}
+		issue2.ContentHash = issue2.ComputeContentHash()
+
+		// Insert issues
+		if err := store.CreateIssue(ctx, issue1, "test"); err != nil {
+			t.Fatalf("failed to create primary issue: %v", err)
+		}
+		if err := store.CreateIssue(ctx, issue2, "test"); err != nil {
+			t.Fatalf("failed to create additional issue: %v", err)
+		}
+
+		// Export to multi-repo
+		results, err := store.ExportToMultiRepo(ctx)
+		if err != nil {
+			t.Fatalf("ExportToMultiRepo() error = %v", err)
+		}
+
+		// Verify export counts
+		if results["."] != 1 {
+			t.Errorf("expected 1 issue exported to primary, got %d", results["."])
+		}
+		if results[additionalDir] != 1 {
+			t.Errorf("expected 1 issue exported to additional, got %d", results[additionalDir])
+		}
+
+		// Verify JSONL files exist and contain correct issues
+		primaryJSONL := filepath.Join(primaryBeadsDir, "issues.jsonl")
+		additionalJSONL := filepath.Join(additionalBeadsDir, "issues.jsonl")
+
+		// Check primary JSONL
+		f1, err := os.Open(primaryJSONL)
+		if err != nil {
+			t.Fatalf("failed to open primary JSONL: %v", err)
+		}
+		defer f1.Close()
+
+		var primaryIssue types.Issue
+		if err := json.NewDecoder(f1).Decode(&primaryIssue); err != nil {
+			t.Fatalf("failed to decode primary issue: %v", err)
+		}
+		if primaryIssue.ID != "bd-primary-1" {
+			t.Errorf("expected bd-primary-1 in primary JSONL, got %s", primaryIssue.ID)
+		}
+
+		// Check additional JSONL
+		f2, err := os.Open(additionalJSONL)
+		if err != nil {
+			t.Fatalf("failed to open additional JSONL: %v", err)
+		}
+		defer f2.Close()
+
+		var additionalIssue types.Issue
+		if err := json.NewDecoder(f2).Decode(&additionalIssue); err != nil {
+			t.Fatalf("failed to decode additional issue: %v", err)
+		}
+		if additionalIssue.ID != "bd-additional-1" {
+			t.Errorf("expected bd-additional-1 in additional JSONL, got %s", additionalIssue.ID)
+		}
+	})
+}