{ "role": "assistant", "content": "Perfect! I have the Walmart sales data. Now let me create a bar chart visualization for you:", "tool_calls": [ { "id": "tooluse_nQG0SglIp6XbxhaEaW72Da", "type": "function", "function": { "name": "agent-chartVisualizationAgent", "arguments": "{\"data\":[{\"YEAR\":2020,\"NET_SALES_USD\":555246712515.679},{\"YEAR\":2021,\"NET_SALES_USD\":571249327580.378},{\"YEAR\":2022,\"NET_SALES_USD\":616702897993.491},{\"YEAR\":2023,\"NET_SALES_USD\":655303612150.261},{\"YEAR\":2024,\"NET_SALES_USD\":691528099721.679},{\"YEAR\":2025,\"NET_SALES_USD\":730767362534.443},{\"YEAR\":2026,\"NET_SALES_USD\":779043706237.257},{\"YEAR\":2027,\"NET_SALES_USD\":825462874967.215},{\"YEAR\":2028,\"NET_SALES_USD\":871540680122.656},{\"YEAR\":2029,\"NET_SALES_USD\":917144185065.812},{\"YEAR\":2030,\"NET_SALES_USD\":961357452473.387}],\"chartType\":\"bar\",\"title\":\"Walmart Sales 2020-2030\",\"xAxis\":\"YEAR\",\"yAxis\":\"NET_SALES_USD\"}" } } ] }, { "role": "tool", "tool_call_id": "tooluse_nQG0SglIp6XbxhaEaW72Da", "content": "{\"error\":true,\"message\":\"Tool input validation failed for agent-chartVisualizationAgent. Please fix the following errors and try again:\\n- prompt: Invalid input: expected string, received undefined\\n\\nProvided arguments: {\\n \\\"data\\\": [\\n {\\n \\\"YEAR\\\": 2020,\\n \\\"NET_SALES_USD\\\": 555246712515.679\\n },\\n {\\n \\\"YEAR\\\": 2021,\\n \\\"NET_SALES_USD\\\": 571249327580.378\\n },\\n {\\n \\\"YEAR\\\": 2022,\\n \\\"NET_SAL... (truncated)\",\"validationErrors\":{\"_errors\":[],\"prompt\":{\"_errors\":[\"Invalid input: expected string, received undefined\"]}}}" }, { "role": "user", "content": "try again" }, { "role": "assistant", "content": "", "tool_calls": [ { "id": "tooluse_61xdXS5wN1EoUkRhfrdjSA", "type": "function", "function": { "name": "agent-chartVisualizationAgent", "arguments": "{}" } } ] }, { "role": "tool", "tool_call_id": "tooluse_61xdXS5wN1EoUkRhfrdjSA", "content": "Tool \"agent-chartVisualizationAgent\" received invalid arguments — the provided JSON could not be parsed. Please provide valid JSON arguments." }, { "role": "user", "content": "try again" }, { "role": "user", "content": "try again" }, { "role": "user", "content": "try again" } ], "tools": [ { "type": "function", "function": { "name": "executeSQLTool", "description": "Executes SQL queries against a Snowflake database", "parameters": { "$schema": "https://json-schema.org/draft/2020-12/schema", "type": "object", "properties": { "query": { "type": "string", "description": "SQL query to execute" } }, "required": [ "query" ], "additionalProperties": false } } }, { "type": "function", "function": { "name": "agent-riRetailerModelGenerateSQLAgent", "description": "Agent responsible for generating Snowflake SQL queries.", "parameters": { "$schema": "https://json-schema.org/draft/2020-12/schema", "type": "object", "properties": { "prompt": { "type": "string", "description": "The prompt to send to the agent" }, "threadId": { "description": "Thread ID for conversation continuity for memory messages", "type": [ "string", "null" ] }, "resourceId": { "description": "Resource/user identifier for memory messages", "type": [ "string", "null" ] }, "instructions": { "description": "Custom instructions to override agent defaults", "type": [ "string", "null" ] }, "maxSteps": { "description": "Maximum number of execution steps for the sub-agent", "type": [ "number", "null" ], "minimum": 3 }, "suspendedToolRunId": { "default": "", "type": [ "string", "null" ], "description": "The runId of the suspended tool" }, "resumeData": { "description": "The resumeData object created from the resumeSchema of suspended tool", "type": [ "string", "number", "integer", "boolean", "object", "array", "null" ], "items": {} } }, "required": [ "prompt", "suspendedToolRunId" ], "additionalProperties": false } } }, { "type": "function", "function": { "name": "agent-chartVisualizationAgent", "description": "Agent: chartVisualizationAgent", "parameters": { "$schema": "https://json-schema.org/draft/2020-12/schema", "type": "object", "properties": { "prompt": { "type": "string", "description": "The prompt to send to the agent" }, "threadId": { "description": "Thread ID for conversation continuity for memory messages", "type": [ "string", "null" ] }, "resourceId": { "description": "Resource/user identifier for memory messages", "type": [ "string", "null" ] }, "instructions": { "description": "Custom instructions to override agent defaults", "type": [ "string", "null" ] }, "maxSteps": { "description": "Maximum number of execution steps for the sub-agent", "type": [ "number", "null" ], "minimum": 3 }, "suspendedToolRunId": { "default": "", "type": [ "string", "null" ], "description": "The runId of the suspended tool" }, "resumeData": { "description": "The resumeData object created from the resumeSchema of suspended tool", "type": [ "string", "number", "integer", "boolean", "object", "array", "null" ], "items": {} } }, "required": [ "prompt", "suspendedToolRunId" ], "additionalProperties": false } } } ], "tool_choice": "auto" }, "statusCode": 400, "responseHeaders": { "cache-control": "no-cache, no-store, max-age=0, must-revalidate", "connection": "keep-alive", "content-encoding": "gzip", "content-type": "application/json", "date": "Tue, 03 Mar 2026 20:12:35 GMT", "expires": "0", "pragma": "no-cache", "strict-transport-security": "max-age=31536000 ; includeSubDomains", "transfer-encoding": "chunked", "vary": "accept-encoding", "x-content-type-options": "nosniff", "x-frame-options": "DENY", "x-fw-rid": "df546e5e-9ab8-47a9-8ff1-29ac8c943aa3", "x-xss-protection": "0" }, "responseBody": "{\"error\":{\"message\":\"The content field in the Message object at messages.15 is empty. Add a ContentBlock object to the content field and try again. (Service: BedrockRuntime, Status Code: 400, Request ID: 77f25912-69db-4464-94b8-583b5a492794) (SDK Attempt Count: 1)\",\"type\":\"invalid_request_error\",\"param\":null,\"code\":\"content_processing_error\"}}", "isRetryable": false, "data": { "error": { "message": "The content field in the Message object at messages.15 is empty. Add a ContentBlock object to the content field and try again. (Service: BedrockRuntime, Status Code: 400, Request ID: 77f25912-69db-4464-94b8-583b5a492794) (SDK Attempt Count: 1)", "type": "invalid_request_error", "param": null, "code": "content_processing_error" } } } DEBUG [2026-03-03 15:12:35.085 -0500] (Mastra): [Observability] Event exported [target=mastra-cloud-observability-exporter] [type=span_ended] DEBUG [2026-03-03 15:12:35.085 -0500] (Mastra): [LLM] - Stream Finished: text: "" toolCalls: [] toolResults: [] finishReason: "error" usage: { "inputTokens": 0, "outputTokens": 0, "totalTokens": 0 } runId: "590f42cf-921f-4f13-83ec-8a908a1131f5" threadId: "aaeee3f4-6156-4298-9330-b34ae3c1f8ea" resourceId: "ri-data-agent" DEBUG [2026-03-03 15:12:35.085 -0500] (Mastra): [Observability] Event exported [target=mastra-default-observability-exporter] [type=span_ended] ERROR [2026-03-03 15:12:35.085 -0500] (Mastra): Error calling handler path: "/agents/:agentId/generate" method: "POST" error: { "message": "The content field in the Message object at messages.15 is empty. Add a ContentBlock object to the content field and try again. (Service: BedrockRuntime, Status Code: 400, Request ID: 77f25912-69db-4464-94b8-583b5a492794) (SDK Attempt Count: 1)", "stack": AI_APICallError: The content field in the Message object at messages.15 is empty. Add a ContentBlock object to the content field and try again. (Service: BedrockRuntime, Status Code: 400, Request ID: 77f25912-69db-4464-94b8-583b5a492794) (SDK Attempt Count: 1) at file:///C:/Users/ganesh.barinepalleve/_repos/eri-mcp-ai/node_modules/@ai-sdk/provider-utils/dist/index.mjs:2443:14 at process.processTicksAndRejections (node:internal/process/task_queues:105:5) at async postToApi (file:///C:/Users/ganesh.barinepalleve/_repos/eri-mcp-ai/node_modules/@ai-sdk/provider-utils/dist/index.mjs:2286:28) at async OpenAICompatibleChatLanguageModel.doGenerate (file:///C:/Users/ganesh.barinepalleve/_repos/eri-mcp-ai/node_modules/@ai-sdk/openai-compatible/dist/index.mjs:530:9) at async AISDKV6LanguageModel.doGenerate (file:///C:/Users/ganesh.barinepalleve/_repos/eri-mcp-ai/node_modules/@mastra/core/dist/chunk-NXKI2L4X.js:46:20) at async pRetry.default.retries (file:///C:/Users/ganesh.barinepalleve/_repos/eri-mcp-ai/node_modules/@mastra/core/dist/chunk-VBPU6CLZ.js:11705:34) at async Module.pRetry (file:///C:/Users/ganesh.barinepalleve/_repos/eri-mcp-ai/node_modules/p-retry/index.js:197:19) at async createStream (file:///C:/Users/ganesh.barinepalleve/_repos/eri-mcp-ai/node_modules/@mastra/core/dist/chunk-VBPU6CLZ.js:11702:16) at async Object.start (file:///C:/Users/ganesh.barinepalleve/_repos/eri-mcp-ai/node_modules/@mastra/core/dist/chunk-VBPU6CLZ.js:2023:27) } DEBUG [2026-03-03 15:12:39.381 -0500] (Mastra): Batch flushed strategy: "batch-with-updates" batchSize: 20 flushReason: "time" durationMs: 109