Claude Code Plugin

Version 1.2.0 adds version-2 TypeScript target awareness to the Claude Code plugin. It packages the same CLI-backed Python and TypeScript authoring loop as the Codex plugin, while keeping Claude's approval-style PreToolUse decision and first-build reviewer agent.

Install

uvx jaunt install-claude-plugin
# from this clone:
uv run jaunt install-claude-plugin --local --root .

The direct GitHub flow is:

claude plugin marketplace add creatorrr/jaunt
claude plugin install jaunt@jaunt-plugins

On a rerun, the installer refreshes the marketplace and calls claude plugin update jaunt@jaunt-plugins for an existing installation.

Start a new Claude Code session after installation. For one-session development, use claude --plugin-dir ./jaunt-claude-plugin.

The bundled command hooks require Bash.

Workspace routing

One root jaunt.toml can cover several packages and mixed flat/src layouts. source_roots and test_roots accept literal paths and globs. Each module uses its longest containing root and nearest owning pyproject.toml. There is no one-config-per-package rule.

Preview consolidation of older nested configs with:

uv run jaunt migrate --merge-projects

Add --apply only after the no-model plan reports no route, digest, fingerprint, or artifact change.

Skills and reviewer

• /jaunt:working-with-jaunt: spec rules, workspace routing, and freshness.
• /jaunt:build: preview likely model calls, build, report actual cost, and run the Python or TypeScript native gates.
• /jaunt:doctor: authentication, Node/npm/worker/compiler readiness, workspace health, current stale or unbuilt state, diagnostics, orphans, and duplicate Claude/Codex guards.
• /jaunt:convert: explicit-only Python or TypeScript conversion, with characterization tests before the first model call.
• first-build-reviewer: read-only contract-silence review after a module's first successful build.

The plugin does not use fixed dollar estimates. It distinguishes likely model work before a build and reports the actual cost afterward.

Freshness reasons

Hooks

The shared SessionStart script reads payload cwd and injects a bounded freshness/orphan summary for each discovered workspace, including TypeScript unbuilt, invalid, and diagnostic counts. Because jaunt status imports discovered spec modules, enable SessionStart only for workspaces whose Python code you trust.

The Claude guard resolves the nearest workspace before calling jaunt guard, so custom generated directories use the correct config. It also asks for approval before editing an existing provenance-headed generated .pyi and points to the matching .py spec.

Both hooks fail open on malformed input, missing configuration, unavailable tools, or timeouts. /jaunt:doctor flags hand-written guards in either Claude or Codex config once the matching plugin hook is enabled.

There is no MCP server; Jaunt's JSON CLI is the machine interface.

Plugin commands prefer a compatible installed jaunt, use uv run --no-sync jaunt in a uv project, and fall back to uvx jaunt for a JavaScript-only workspace.

Next: PyPI Skills.