open source · local-first

Stay afloat.
Ready for any wind.

Velella builds open-source tools that find what breaks next, before it breaks your build.

Now

Evergreen

Finds end-of-life and deprecated runtimes, packages, and GitHub Actions in your repository. Every finding shows the exact file and line, an authoritative source, a replacement, and migration steps.

Deterministic and offlineNo account, no network call, the same result every run.
Honest about gapsNo rule for a package? It says no-data, never safe.
For people and agentsCLI, local MCP server, GitHub Action with SARIF, and an Agent Skill.

View on GitHub Read the docs

terminal

$ npx @velella/evergreen scan

Dockerfile:1
  node:18 reached end of life
  source: nodejs.org/en/about/previous-releases
  move to node:22

.github/workflows/ci.yml:14
  actions/checkout@v3 runs on a retired runtime
  move to actions/checkout@v4

How we build

Four rules we do not bend.

Exact

File, line, version. Not a vague warning.

Sourced

Every claim points to the people who own the fact.

Honest

We say what we do not know instead of guessing.

Local-first

Your code stays on your machine.

Why Velella

A Velella is a small blue sailor that drifts on the open sea. It carries a sail, reads the wind, and travels in colonies of thousands, each one small, together hard to stop.

That is the idea: small, sharp tools that work together, so your software keeps moving when the wind changes.