How to view AI Agent Node Exact Tool Schema

Questions
1

How to view any AI Agent sub-node schema ?
How could we know what schema is expected by the sub-node tools ?

For example MongoDB Find:
I do this in expression: {{ JSON.stringify($agentInfo.tools, null, 2) }}

output:

[
  {
    "connected": true,
    "name": "app_conf",
    "type": "MongoDB Tool",
    "resource": null,
    "operation": null,
    "hasCredentials": true,
    "aiDefinedFields": [
      "Query"
    ]
  }
]

but no matter what i do to tell LLM, it only works if that mongoDB description instruct:

USAGE EXAMPLES

{"name":"<toolName>","args":{"Query__JSON_Format_":{"app":"APP_VALUE","config_name":"CONFIG_VALUE"}}}

if using “Query” or “query” instead of “Query__JSON_Format_”, it just wont work, why ?

n8n/packages/nodes-base/nodes/MongoDb/MongoDbProperties.ts at master · n8n-io/n8n

this become guestwork if I don’t have ways to precisely see what the sub-node is expecting,

how to view expected schema ?
Arent this “Received tool input did not match expected schema” supposedly be taken care by N8N if they want more market share ?

Information on your n8n setup

  • n8n version: 1.91.2
  • Database (default: SQLite): default container
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app): docker self hosted
  • Operating system: container