version-test

Name: version-test
Rating: 62
Author: chrisguillory

Explore Claude Code version behaviors empirically.

Usage

code

/version-test <version> [target]

Environment

code

Active:    !`readlink ~/.local/bin/claude | xargs basename 2>/dev/null`
Installed: !`ls ~/.local/share/claude/versions/ 2>/dev/null | grep -E '^[0-9]' | sort -V | tr '\n' ' '`

Changelog

bash

gh api repos/anthropics/claude-code/contents/CHANGELOG.md --jq '.content' | base64 -d

Use a subagent for extensive changelog analysis to avoid context bloat.

https://github.com/anthropics/claude-code/blob/main/CHANGELOG.md

Observation targets

Target	Prompt	Look for
`agent`	"Launch agent to compute 1+1"	`subagents/` dir vs agent files in root
`schema`	Any prompt	Validate JSONL with Pydantic models
`feature`	n/a	`"$binary" --help` output

Workflow

1. Install

bash

binary=$(.claude/skills/version-test/scripts/install-version.sh $0)

2. Session ID

MMPP0000-0000-0000-0000-00000000000N (MM=minor, PP=patch, N=counter)

3. Run

bash

"$binary" --session-id "$SESSION_ID" -p "<prompt>"

4. Inspect

bash

find ~/.claude/projects -name "*$SESSION_ID*"
ls -laR "$SESSION_DIR"

For schema validation:

bash

uv run python3 << EOF
from pydantic import TypeAdapter
import json
from src.schemas.session import SessionRecord
adapter = TypeAdapter(SessionRecord)
for line in open("$SESSION_FILE"):
    if line.strip():
        adapter.validate_python(json.loads(line))
print("✓ valid")
EOF

5. Cleanup

bash

uv run python -m src.cli.main delete "$SESSION_ID" --force --no-backup

Known changes

Version	Change
2.1.2	`subagents/` directory for agent files
2.1.0	Skills, forked contexts, hooks
2.0.64	Background agents, TaskOutputTool