{"record":{"id":"3cce7c4f86d7a5f1","repo":"mastra-ai/mastra","slug":"failed-to-resolve-updated-agent","errorCode":null,"errorMessage":"Failed to resolve updated agent","messagePattern":"Failed to resolve updated agent","errorType":"http","errorClass":"HTTPException","httpStatus":500,"severity":"error","filePath":"packages/server/src/server/handlers/stored-agents.ts","lineNumber":984,"sourceCode":"        const latestVersion = versions[0];\n        if (latestVersion) {\n          await agentsStore.update({\n            id: storedAgentId,\n            activeVersionId: latestVersion.id,\n          });\n        }\n      }\n\n      // Clear the cached agent instance so the next request gets the updated config\n      const editor = mastra.getEditor();\n      if (editor) {\n        editor.agent.clearCache(storedAgentId);\n      }\n\n      // Return the resolved agent with the latest version\n      const resolved = await agentsStore.getByIdResolved(storedAgentId, { status: 'draft' });\n      if (!resolved) {\n        throw new HTTPException(500, { message: 'Failed to resolve updated agent' });\n      }\n\n      return enrichOrStripFavorites(mastra, requestContext, 'agent', resolved);\n    } catch (error) {\n      return handleError(error, 'Error updating stored agent');\n    }\n  },\n});\n\n/**\n * DELETE /stored/agents/:storedAgentId - Delete a stored agent\n */\nexport const DELETE_STORED_AGENT_ROUTE = createRoute({\n  method: 'DELETE',\n  path: '/stored/agents/:storedAgentId',\n  responseType: 'json',\n  pathParamSchema: storedAgentIdPathParams,\n  responseSchema: deleteStoredAgentResponseSchema,","sourceCodeStart":966,"sourceCodeEnd":1002,"githubUrl":"https://github.com/mastra-ai/mastra/blob/75dd419e613fe9c39f846ffc500716141b74fda6/packages/server/src/server/handlers/stored-agents.ts#L966-L1002","documentation":"HTTP 500 thrown at the end of the update handler when `agentsStore.getByIdResolved(storedAgentId, { status: 'draft' })` returns null after the update and cache-clear completed. The handler returns the resolved (thin record + version config) agent, so a null here means the updated record can't be re-read — an inconsistent or stale storage state, not a client input problem.","triggerScenarios":"Update request where the write succeeded (or partially succeeded) but draft resolution returns nothing — unmigrated version tables, read-after-write lag in the adapter, a version collapse that left no active draft, or a custom getByIdResolved that can't resolve the agent's versions.","commonSituations":"Custom/older storage adapters without full resolved-read support; editor cache cleared but underlying version rows missing; concurrent update/delete racing the final read; data manually edited or corrupted in the database.","solutions":["Upgrade the storage adapter / run migrations so getByIdResolved resolves drafts correctly","Re-read the agent via the plain get endpoint to check whether the record exists at all; if the agent was deleted concurrently, recreate or surface 404 to the user","Retry the update once; if it recurs, inspect the agents and version rows for the missing draft version","If using a custom adapter, implement getByIdResolved to fall back from activeVersionId to the latest draft version"],"exampleFix":"// before\nconst resolved = await agentsStore.getByIdResolved(storedAgentId, { status: 'draft' });\nif (!resolved) throw new HTTPException(500, { message: 'Failed to resolve updated agent' });\n\n// after (caller-side guard)\nconst updated = await updateStoredAgent(id, patch).catch(() => null);\nconst resolved = updated ?? (await getStoredAgent(id)); // fall back to thin record","handlingStrategy":"fallback","validationCode":"const updated = await updateStoredAgent(id, patch);\nconst check = await getStoredAgent(id);\nif (!check) console.warn('updated agent cannot be re-read; storage resolution is inconsistent');","typeGuard":"function isAgentRecord(a: unknown): a is { id: string; name: string } {\n  return !!a && typeof a === 'object' && 'id' in a && 'name' in a;\n}","tryCatchPattern":"try {\n  return await updateStoredAgent(id, patch);\n} catch (e) {\n  if (isHttpError(e) && e.status === 500 && /Failed to resolve updated agent/.test(e.message)) {\n    const thin = await getStoredAgent(id); // fall back to thin record\n    if (thin) return thin;\n  }\n  throw e;\n}","preventionTips":["Keep adapter's getByIdResolved implemented and tested for draft status","Avoid deleting an agent concurrently with updates to it","Upgrade core/adapter pairs together when resolution APIs change"],"tags":["storage","resolution","http-500","draft","read-after-write"],"backgroundTag":"resource-not-resolvable","analyzedSha":"75dd419e613fe9c39f846ffc500716141b74fda6","analyzedAt":"2026-08-30T00:15:31.844Z","schemaVersion":2},"datasetVersion":"2026-08-30T08:17:16.595Z"}