Ship It Faster: Auto-Flag Outdated Packages in Your Users' Open Source Repos

The Problem Nobody Talks About

You just shipped a critical security patch to your open source library. You publish the release notes, update your GitHub discussion, send a tweet. Then what? You have no idea which of the hundreds of projects that depend on you are running the old version. Some users won't check for months. Some never will.

It's not your job to chase every downstream user—but wouldn't it be nice to know? And to nudge them, just once, in a way that feels helpful rather than spammy?

The Setup

When you publish a new version of your library to a package registry (npm, PyPI, Cargo, etc.), you have a public record: the GitHub repos that import it. Your agent can find them, check their dependency file, and quietly open a PR or send a message to maintainers whose version is outdated. All in one automated run.

Here's what you'd ask your coding agent:

Build me a pipeline that runs once a day. It checks the MyAwesomeLib releases on npm for any tagged as "security patch" or "major" in the last week. For each new release, search GitHub for public repos that have MyAwesomeLib in their package.json. Clone or fetch each repo, read the version constraint they're using, compare it to the latest, and for repos still on an old major version, open a PR that bumps the dependency. Include a one-line changelog summary in the PR description. If the repo is archived or has no activity in a year, skip it.

What You See

You open WebArm24, connect your coding agent with one command:

claude mcp add --transport http webarm24 https://webarm24.online/mcp --header "Authorization: Bearer <YOUR_WEBARM24_KEY>"

The agent describes the pipeline aloud as it builds. You see it unfold on the canvas:

• Fetch latest releases from npm (or your registry)
• Filter by tag or date
• Search GitHub for repos using a keyword search
• For each repo: read package.json and check the pinned version
• Decide: is it outdated?
• Create a PR with a prepared commit message and changelog excerpt
• Log results to persistent storage so you never spam the same repo twice

You click through one run by hand to make sure the first PR looks right. The agent asks: "Should I include a link to the upgrade guide?" You say yes. It tweaks the PR template in seconds. Then you click the schedule icon, set it to run daily, and walk away.

Next morning, you check your GitHub notifications. Three maintainers have already merged your PRs. Two others opened discussions. One repo had a conflict, but the agent logged it, so you don't try there again next week.

Why This Works

You're not spamming—you're providing signal. Maintainers get a PR that's correctly formatted, has real value, and respects their time. Because the pipeline remembers which repos it has already contacted (via persistent storage), you never nag the same project twice in a week.

The beauty is that it scales. One small library, one big library, ten libraries—the agent maintains them all the same way. And you can tweak the logic on the fly: "Only target repos with over 100 stars" or "Skip TypeScript projects" or "Add a comment asking for feedback on the upgrade experience."

Remix Ideas

Notify via email instead of PRs: For libraries you don't maintain but depend on, run the same pipeline to check upstream packages. When a new major version lands, send yourself an email summary with a link to the changelog and a one-click webhook to add it to your test backlog.

Track adoption by version: Store the results of each run and graph which major versions are still in use across all your dependents. Spot patterns: maybe Node.js 18 shops upgrade faster than enterprises on Node.js 16. Use that data to decide when to drop support.

Cross-pollinate fixes: If you run this for multiple libraries you maintain, the agent can also watch for repos that use both and automatically suggest a coordinated PR that bumps both at once—saving maintainers a separate merge.

Ready?

This is the kind of work that feels too tedious to automate by hand. But with WebArm24, you describe it once, and it runs flawlessly on a schedule. No cron server, no GitHub Actions boilerplate, no custom scripts to maintain.

Head to WebArm24, sign up for free credits, and ask your agent to build the first version for your library today. The maintenance payoff compounds.