claude-code - 💡(How to fix) Fix [FEATURE] add time to JSONL "usage" property

Preflight Checklist

• I have searched existing requests and this feature hasn't been requested yet
• This is a single feature request (not multiple features)

Problem Statement

The JSONL log is useful. It records agent usage in tokens, but not the time Claude is "thinking". I would like that to be recorded in the JSONL log.

Proposed Solution

Existing usage property in example JSONL entry :

"usage":{"input_tokens":3,"cache_creation_input_tokens":37097,
"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":37097,"ephemeral_1h_input_tokens":0},
"output_tokens":3}

Add another item in this dictionary:

"usage":{"input_tokens":3,"cache_creation_input_tokens":37097,
"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":37097,"ephemeral_1h_input_tokens":0},
"output_tokens":3,"duration_ms":3307}

Alternative Solutions

No response

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

No response

Additional Context

No response