mem0ai/mem0 · error · Error

Unsupported history store provider

Error message

Unsupported history store provider: ${provider}

What it means

Thrown by the history store factory when historyDbPath config specifies a provider other than sqlite, supabase, or memory. The history store persists memory update history; the switch only resolves these three provider names, so anything else falls to default and throws.

Solutions

1. Use 'sqlite', 'supabase', or 'memory' exactly as cased in the factory switch.
2. For a file-backed history use provider 'sqlite' with config.historyDbPath set to a writable path.
3. If you need another backend, disable/keep the default history manager or contribute support upstream.

Example fix

// before
historyStore: { provider: 'sqlite3', config: { historyDbPath: './hist.db' } }
// after
historyStore: { provider: 'sqlite', config: { historyDbPath: './hist.db' } }

const HISTORY_PROVIDERS = ['sqlite','supabase','memory'];
function assertHistoryProvider(provider: string) {
  if (!HISTORY_PROVIDERS.includes(provider.toLowerCase()))
    throw new Error(`historyStore.provider must be one of ${HISTORY_PROVIDERS.join(', ')}`);
}

const isKnownHistoryProvider = (p: string): boolean => HISTORY_PROVIDERS.includes(p.toLowerCase());

When it happens

Trigger: historyStore: { provider: 'postgres', config: {...} }, or provider: 'sqlite3' instead of 'sqlite', or omitting quotes/types so the value arrives as an unexpected string.

Common situations: Wanting history in Postgres/MySQL when only sqlite (file or :memory:), supabase, and in-memory are supported in TS; migrating from Python where history backends differ; typo in provider id.

Related errors

• Unsupported embedder provider
• Unsupported LLM provider
• Unsupported reranker provider
• Unsupported vector store provider
• Anthropic API key is required

AI-assisted analysis of mem0ai/mem0@001c235229 (2026-08-15). Data as JSON: /api/errors/3600115a233e24a8. Report an issue: GitHub.

Appendix: source

Thrown at mem0-ts/src/oss/src/utils/factory.ts:294

    return LLMFactory.create(llmProvider, llmConfig);
  }
}

export class HistoryManagerFactory {
  static create(provider: string, config: HistoryStoreConfig): HistoryManager {
    switch (provider.toLowerCase()) {
      case "sqlite":
        return new SQLiteManager(config.config.historyDbPath || ":memory:");
      case "supabase":
        return new SupabaseHistoryManager({
          supabaseUrl: config.config.supabaseUrl || "",
          supabaseKey: config.config.supabaseKey || "",
          tableName: config.config.tableName || "memory_history",
        });
      case "memory":
        return new MemoryHistoryManager();
      default:
        throw new Error(`Unsupported history store provider: ${provider}`);
    }
  }
}

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