LangSmith just turned every coding agent into one shared trace
That sounds like a minor observability tweak. It is not.
Coding agents have been black boxes by default.
Each one keeps its own log format, its own session model, its own idea of what counts as worth recording.
LangSmith now maps every coding agent session, regardless of which tool produced it, into one standardized trace schema.
https://www.langchain.com/blog/your-coding-agents-are-a-black-box-heres-how-to-crack-them-open
A team running more than one coding agent has had no single view of what any of them actually did.
That is not a tooling gap.
It is a visibility gap.
The pivot is not pick one agent and stick with it.
It is treat every agent session like production traffic, not a black box you trust by default.
• Log every tool call the agent makes
• Standardize the trace format across agents
• Review sessions the same way you review a deploy
An agent you cannot inspect is not autonomous.
It is unaccountable.
And unaccountable is not a feature.
The fix is not fewer agents.
It is one view across all of them.