googleapis/mcp-toolbox · error

failed to list indexes: %w

Error message

failed to list indexes: %w

What it means

Task-failure wrap inside the concurrent schema extraction: the 'indexes' task (CALL db.indexes()) failed while listing graph indexes, aborting the whole schema extraction.

Source

Thrown at internal/tools/falkordb/falkordbschema/falkordbschema.go:232

				edgeResult, err := runReadQuery(ctx, source, "MATCH ()-[r]->() RETURN count(r) AS count")
				if err != nil {
					return fmt.Errorf("failed to count relationships: %w", err)
				}
				mu.Lock()
				defer mu.Unlock()
				schema.GraphInfo.NodeCount = helpers.FirstRowInt64(nodeResult)
				schema.GraphInfo.EdgeCount = helpers.FirstRowInt64(edgeResult)
				schema.Statistics.TotalNodes = schema.GraphInfo.NodeCount
				schema.Statistics.TotalRelationships = schema.GraphInfo.EdgeCount
				return nil
			},
		},
		{
			name: "indexes",
			fn: func() error {
				result, err := runReadQuery(ctx, source, "CALL db.indexes()")
				if err != nil {
					return fmt.Errorf("failed to list indexes: %w", err)
				}
				mu.Lock()
				defer mu.Unlock()
				schema.Indexes = helpers.Rows(result)
				return nil
			},
		},
		{
			name: "constraints",
			fn: func() error {
				result, err := runReadQuery(ctx, source, "CALL db.constraints()")
				if err != nil {
					// Constraint listing varies across FalkorDB versions;
					// report the failure in the schema rather than failing
					// the whole extraction.
					mu.Lock()
					defer mu.Unlock()
					schema.Errors = append(schema.Errors, fmt.Sprintf("failed to list constraints: %s", err))

View on GitHub (pinned to 8cc6e09de2)

Solutions

1. Inspect the wrapped error for the underlying FalkorDB failure
2. Check the FalkorDB version supports db.indexes()
3. Retry the schema extraction once the server is healthy

When it happens

Trigger: Thrown at internal/tools/falkordb/falkordbschema/falkordbschema.go:232 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of googleapis/mcp-toolbox@8cc6e09de2 (2026-09-05). Data as JSON: /api/errors/9d1c70c419f7ca0c. Report an issue: GitHub.