Your AI database agent needs better errors than “tool failed”

“Tool failed” is not an error message. It is a debugging tax. When an AI agent queries a database through MCP, failures need to be structured enough for the agent to recover and specific enough for humans to audit. A database tool can fail because: user lacks tenant or role scope query exceeds row/time/cost budgets requested metric is not approved data source is stale or unavailable result was partially returned write requires approval before execution Those should not all collapse into t...