Syncpack
Monorepo dependency management tool that enforces consistent package versions across all package.json files. Syncpack detects mismatched versions of the same dependency across packages, fixes them automatically, and can pin or align versions per custom rules. Essential for monorepos where packages drift to different versions of shared dependencies.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Local execution only. Helps enforce version consistency which reduces supply chain risk from version drift.
⚡ Reliability
Best When
You're managing a JavaScript/TypeScript monorepo and want to enforce consistent dependency versions across packages without manual auditing.
Avoid When
You need automated dependency updates or vulnerability patching — pair Syncpack with Renovate/Dependabot for a complete solution.
Use Cases
- • Detect and fix mismatched versions of the same npm package across monorepo packages in CI pipelines
- • Enforce workspace dependency version policies (always use workspace:* for internal packages, pin exact for security-sensitive deps)
- • List all unique dependency versions across the monorepo for audit or security review
- • Automate dependency version alignment in agent-driven monorepo maintenance workflows
- • Validate that all packages use the same version of React, TypeScript, or other shared dependencies before release
Not For
- • Single-package projects — Syncpack is monorepo-specific
- • Automated dependency updates — use Renovate or Dependabot for version bumping; Syncpack enforces consistency after updates
- • Non-npm ecosystems — Python, Go, Rust dependency management has separate tooling
Interface
Authentication
No authentication. Local CLI tool only.
Pricing
MIT-licensed open source project.
Agent Metadata
Known Gotchas
- ⚠ Syncpack v12 introduced breaking config changes from v11 — syncpack.config.js format changed significantly; check version before assuming config format
- ⚠ Custom version groups in config are evaluated top-to-bottom — order matters; misplaced rules cause unexpected pinning behavior
- ⚠ workspace: protocol versions (pnpm workspaces) require specific Syncpack config to handle correctly; default rules may flag them as mismatches
- ⚠ Syncpack reads all package.json files recursively by default — .syncpackrc config needed to exclude node_modules or nested test fixtures
- ⚠ The 'fix' command modifies package.json files in place — agents should commit before running fix to preserve rollback ability
- ⚠ Syncpack enforces version consistency but doesn't resolve which version is 'correct' — human or additional tooling decides the target version
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for Syncpack.
Scores are editorial opinions as of 2026-03-06.