Reference

Diagnose

Why an agent might be failing, in one call: findings with severity and resolution, validation, recent generation and tool failures, failed imports, unanswered questions and the last test run.

REST	`GET /api/v1/agents/{agent_id}/diagnostics`
MCP tool	`diagnose_agent`
Classification	Read (changes nothing)
Scope	`agents:read`
Minimum role on the agent	editor
Confirmation	Not needed
Retry safety	Safe to retry with the same input
Success status	200

What it does

Why an agent might be failing, in one call: findings with severity and resolution, validation, recent generation and tool failures, failed imports, unanswered questions and the last test run.

Side effects

None. It only reads.

Inputs

Name	Type	Required	In	Description
`agent_id`	string	yes	path	The agent id (agt_...), from list_agents.
`days`	integer	no	query	Default 7.

Example

REST

curl "https://covo.lanaai.io/api/v1/agents/agt_4edc89bb2964/diagnostics?days=7" \
  -H "Authorization: Bearer $COVO_TOKEN"

MCP (POST /mcp)

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "diagnose_agent",
    "arguments": {
      "agent_id": "agt_4edc89bb2964",
      "days": 7
    }
  }
}

Response

Returns an object with healthy, findings, validation, recent, unanswered_questions and last_test_run. This is a real response, shortened to two items per list.

200 response

{
  "healthy": true,
  "findings": [],
  "validation": {
    "valid": true,
    "state": "ready",
    "errors": [],
    "warnings": [
      {
        "step": "knowledge",
        "field": null,
        "severity": "recommended",
        "message": "Add a few common questions. Short, specific answers work best."
      }
    ],
    "checks": [
      {
        "name": "ai_provider",
        "status": "pass",
        "message": "The AI provider is configured."
      },
      {
        "name": "reply_allowance",
        "status": "pass",
        "message": "2999 AI replies left this month."
      }
    ]
  },
  "recent": {
    "days": 7,
    "generation_failures": 0,
    "rate_limited": 0,
    "unanswered": 0,
    "tool_failures": [],
    "source_failures": []
  },
  "unanswered_questions": [],
  "last_test_run": {
    "id": "68c583c0-3bb6-42d3-85b4-193ea6eeca79",
    "revision": 7,
    "passed": 1,
    "failed": 0,
    "cases": [
      {
        "name": "Explains the studio",
        "turns": [
          {
            "reply": "Northwind Labs\nNorthwind Labs builds private AI systems for small law firms.",
            "message": "What does Northwind Labs do?",
            "grounding": "known",
            "components": [
              "suggested_questions"
            ],
            "latency_ms": 40,
            "handed_to_person": false
          }
        ],
        "passed": true,
        "failures": [],
        "conversation_id": "b2412a0b-9da5-4df5-adc9-031895e6a98c"
      }
    ],
    "client": {
      "name": "docs-examples",
      "interface": "rest"
    },
    "created_at": "2026-10-07T20:14:41.959Z"
  }
}

Over MCP the same object comes back as the tool result, in structuredContent and as JSON text.

Errors

Status	Code	Meaning
401	`unauthorized`	No token, or it is unknown, revoked or expired. OAuth apps refresh or reconnect.
403	`account_suspended`	The account that owns the token is paused.
403	`insufficient_scope`	The token lacks `agents:read`.
404	`agent_not_found`	Unknown agent, or not reachable with this token.
400	`bad_request`	An input is invalid; `field` names it.
429	`rate_limited`	Wait `Retry-After` seconds.