Provide a tool to agent to get current session costs

[gsemet]

🏷️ Discussion Type

Product Feedback

💬 Feature/Topic Area

VS Code

Body

Hello,
To keep track of usage during implementation, I would like to have my agent to automatically fetch the total cost of the current session, eventually splitted by models. I would like to have the input tokens, cached input, output and AIC, including subagent.

Today I use Mooracle.copilot-budget extension that use OTP and burn the session costs into the commit message (resetting counter after commit), it is pretty cool to have the tracking of usage.

But today, my agent cannot directly fetch this information (need to pass through an extension).

Goal: my agent can call a tool "getCurrentSessionUsage" that returns the total cost usage since the beginning of the session, including subagents.

Thanks

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