{"record":{"id":"1759157c99d68350","repo":"mastra-ai/mastra","slug":"channels-require-storage-to-be-configured-on-the-m","errorCode":null,"errorMessage":"Channels require storage to be configured on the Mastra instance. Configure a storage provider like LibSQLStore.","messagePattern":"Channels require storage to be configured on the Mastra instance\\. Configure a storage provider like LibSQLStore\\.","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"packages/core/src/channels/agent-channels.ts","lineNumber":404,"sourceCode":"  /**\n   * Initialize the Chat SDK, register handlers, and start gateway listeners.\n   * Called by Mastra.addAgent after the server is ready.\n   */\n  async initialize(mastra: Mastra): Promise<void> {\n    if (this.chat) return;\n    if (this.initPromise) {\n      return this.initPromise;\n    }\n\n    this.initPromise = (async () => {\n      // Resolve state adapter: custom > Mastra storage > in-memory fallback\n      if (this.customState) {\n        this.stateAdapter = this.customState;\n      } else {\n        const storage = mastra.getStorage();\n        const memoryStore = storage ? await storage.getStore('memory') : undefined;\n        if (!memoryStore) {\n          throw new Error(\n            'Channels require storage to be configured on the Mastra instance. Configure a storage provider like LibSQLStore.',\n          );\n        }\n        this.stateAdapter = new MastraStateAdapter(memoryStore, () => this.getOwnerId());\n        this.log('info', 'Using MastraStateAdapter (subscriptions persist across restarts)');\n      }\n\n      const { Chat, Message: ChatMessage, ThreadImpl } = await getChatModule();\n      const chat = new Chat({\n        adapters: this.adapters,\n        state: this.stateAdapter,\n        userName: this.userName,\n        // Dispatch every incoming message immediately. Concurrency and queueing\n        // for the same thread are handled by the agent signals layer\n        // (ifActive/ifIdle behaviors), so chat-sdk's own lock-based queue would\n        // be redundant — and in serverless runtimes a stale lock from a frozen\n        // Lambda can cause subsequent messages to be queued forever.\n        concurrency: { strategy: 'concurrent' },","sourceCodeStart":386,"sourceCodeEnd":422,"githubUrl":"https://github.com/mastra-ai/mastra/blob/75dd419e613fe9c39f846ffc500716141b74fda6/packages/core/src/channels/agent-channels.ts#L386-L422","documentation":"AgentChannels.initialize needs a persistent state adapter to store channel subscriptions. Unless a custom state adapter was supplied, it requires the Mastra instance to have storage configured with a memory store; otherwise it throws this configuration error at startup.","triggerScenarios":"Constructing an AgentChannels (or registering a channel) on a Mastra instance created without `storage: new LibSQLStore(...)` (or another storage provider exposing a memory store), then calling initialize.","commonSituations":"Local dev or examples where storage was omitted for simplicity, deploying a channels-enabled agent after copying a minimal Mastra bootstrap, or using a storage provider that does not implement the memory store.","solutions":["Configure storage on the Mastra instance, e.g. `new Mastra({ storage: new LibSQLStore({ url: 'file:./mastra.db' }) })`","Pass a custom state adapter via the channel's customState option if you do not want Mastra storage","Verify your storage provider implements getStore('memory') — some minimal providers may not"],"exampleFix":"// before\nnew Mastra({ agents: { myAgent } }); // no storage\n// after\nimport { LibSQLStore } from '@mastra/libsql';\nnew Mastra({ agents: { myAgent }, storage: new LibSQLStore({ url: 'file:./mastra.db' }) });","handlingStrategy":"validation","validationCode":"const storage = mastra.getStorage();\nif (!storage || !(await storage.getStore('memory'))) {\n  throw new Error('Configure a storage provider with a memory store before initializing channels');\n}","typeGuard":"function hasMemoryStore(s: unknown): s is StorageType {\n  return !!s && typeof (s as StorageType).getStore === 'function';\n}","tryCatchPattern":"try {\n  await channels.initialize(mastra);\n} catch (err) {\n  if (err instanceof Error && err.message.includes('Channels require storage')) {\n    console.error('Add storage: new Mastra({ storage: new LibSQLStore({...}) })');\n  } else throw err;\n}","preventionTips":["Always configure storage in production Mastra bootstraps","Add a startup assertion that storage + memory store exist before channel init","Keep customState alternative in mind for storage-less setups"],"tags":["configuration","storage","channels"],"backgroundTag":"missing-storage-configuration","analyzedSha":"75dd419e613fe9c39f846ffc500716141b74fda6","analyzedAt":"2026-08-30T00:15:31.844Z","schemaVersion":2},"datasetVersion":"2026-08-30T03:17:51.788Z"}