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# Subagents launch, typed hooks, slimmer status line

_2026-05-10_

Three new agent types ship out of the box, Hook configuration is fully typed end-to-end, and the status line gives you back a line of terminal real estate.

## New features
- **agents:** `Plan`, `Explore`, and `code-review` ship as built-in subagent types ([#3402](https://github.com/anthropics/claude-code/pull/3402))
- `PreToolUse` and `PostToolUse` hook events with full input/output typing ([#3380](https://github.com/anthropics/claude-code/pull/3380))
- `/loop` skill self-paces continuous work via ScheduleWakeup ([#3411](https://github.com/anthropics/claude-code/pull/3411))
- Status line API: themes can ship custom JSON renderers

## Performance
- 40% slimmer status line — most users gain one line of terminal real estate ([#3395](https://github.com/anthropics/claude-code/pull/3395))
- Tool dispatch latency down 28% via deferred MCP server warmup

## Bug fixes
- Bash tool no longer truncates long lines on macOS Terminal
- MCP server reconnect loop fixed when a server reports invalid schema
- Permission prompt no longer re-fires on identical commands within one turn

## Behind the scenes

19 `settings.json` shapes consolidated into a single Zod schema; one-off `~/.claude/*` paths now documented under `/settings`.

🚀 Claude Code 2.3.0 is out.

Three new agent types ship out of the box, Hook configuration is fully typed end-to-end, and the status line gives you back a line of terminal real estate.

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New features:
• Plan / Explore / code-review subagent types built in
• PreToolUse / PostToolUse hooks with full typing
• /loop skill for self-paced continuous work

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Performance:
• 40% slimmer status line layout
• Tool dispatch 28% faster via deferred MCP warmup

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Full changelog → https://releasenotekit.toolu.dev/examples/claude-code