Analyze and upgrade dependencies with breaking change detection. Use when updating frontend (pnpm) or backend (uv) dependencies.
Resources
2Install
npx skillscat add casper-studios/casper-marketplace/bump-deps Install via the SkillsCat registry.
Bump Dependencies
Analyze outdated dependencies and safely upgrade them with breaking change detection.
Workflow
Detect package manager based on current directory:
- If in
frontend/directory or working with TypeScript/JavaScript: use `pnpm` reference - If in
backend/directory or working with Python: use `uv` reference
- If in
List outdated dependencies using the package manager-specific command from the reference
Spawn background analysis tasks for EACH notable upgrade:
CRITICAL: You MUST spawn the
package-upgrade-analyzersub-agent as a background Task for EACH and EVERY notable upgrade. Do NOT take shortcuts.Task( subagent_type="package-upgrade-analyzer", run_in_background=true, prompt="Analyze upgrade for {package_name} from {old_version} to {new_version}. GitHub: {repo_url}" )Notable upgrades include:
- Major version bumps (e.g., v4 → v5)
- Packages with known breaking changes
- Core dependencies (React, Next.js, FastAPI, SQLAlchemy, etc.)
Spawn ALL tasks in a single message with multiple tool calls for maximum parallelism.
Wait for all background tasks to complete:
- Use
TaskOutputto retrieve results from each background task - Once ALL tasks are complete, ultrathink about the suggestions, migration guides, and release notes
- Invoke the
Plantool and its sub-agents to strategically address the breaking changes - Plan carefully to maintain as much of the original behavior as possible
- Use
Ask clarifying questions:
- If the migration path forward is ambiguous, ASK questions
- Do NOT proceed unless you're sure about the safety of the dependency version bumps
Generate PR summary document:
Write a
.claude/scratchpad/PR.mdfile using the PR template.
Ensure that all package identifiers are properly wrapped in backticks for readability.Create PR (user confirmation required):
After generating
.claude/scratchpad/PR.md, useAskUserQuestionto confirm:AskUserQuestion( question="Ready to create the PR? You can edit .claude/scratchpad/PR.md first if needed.", header="Create PR?", options=[ { label: "Create PR", description: "Create the PR with current PR.md content" }, { label: "Let me edit first", description: "I'll edit PR.md and confirm when ready" } ] )Once the user confirms, derive
PR_TITLEand create the PR:Deriving
PR_TITLE:- Scope: Use
appfor frontend (pnpm),apifor backend (uv) - Content (pick first applicable):
- ≤3 notable packages: List them by name with target major version
→ "deps(app): bumpreact-queryto v5,nextto v15" - >3 packages with notable ones: Highlight 1-2 notable + count
→ "deps(api): bumpsqlalchemyto v2 (+4 packages)" - Many minor bumps only: Just the count
→ "deps(app): bump 12 dependencies"
- ≤3 notable packages: List them by name with target major version
- Keep under 72 characters
PR_TITLE="deps(app): bump react-query to v5, next to v15" gh pr create --base dev --head "$(git rev-parse --abbrev-ref HEAD)" --title "$PR_TITLE" --body-file .claude/scratchpad/PR.mdAfter successful PR creation:
# Clean up the scratchpad file rm .claude/scratchpad/PR.mdReturn the PR URL to the user.
- Scope: Use
Important Notes
- Always analyze breaking changes BEFORE upgrading
- Use parallel Task agents for efficiency
- Focus on safety over speed - better to ask than to break production
- Consider rollback strategies for risky upgrades
Additional Instructions
The remaining instructions are behavior overrides by the user.
$ARGUMENTS