check_maintainer_changes
shallowio.github.salemalem/npmscan · Verify this server
Reconstruct who has controlled an npm package and when, straight from the packument (each version records the maintainer list at publish time and who ran `npm publish`). Use it for the 'who controls this package, and did that change recently' question; use get_package/check_package_provenance for general health and publish integrity. Flags: 1. a maintainer added recently who then published soon after, on a package with real prior history — the takeover shape behind ua-parser-js, event-stream and the 2025 chalk/debug ('qix') compromise 2. the whole maintainer list replaced at once 3. a long-standing maintainer quietly dropped 4. a maintainer change on npm AFTER the latest release — more urgent: access changed hands but nothing has shipped yet It also checks the declared GitHub repository: transferred or renamed (`repository.ownerLogin`/`ownerAvatarUrl` show the CURRENT owner), unreachable, or a latest release that landed long after any real push activity. If it flags a newly added or fully replaced maintainer, follow up with check_maintainer_blast_radius on that username to see whether the same account touched other packages at the same time. Findings are signals to verify, not proof of compromise.
1 trials · measured today
check_maintainer_changes scores 100.0/100 on Vouch's measured behaviour index, from 1 real invocation trials against io.github.salemalem/npmscan, measured 20 Oct 2026 under methodology v0.2.0. Every measured component scored 100.
Component breakdown
| Component | Weight | Value |
|---|---|---|
| Reliability | 35% | not applicable |
| Schema integrity | 25% | 100.0 |
| Failure behaviour | 15% | not applicable |
| Latency | 15% | not applicable |
| Concurrency | 10% | not applicable |
Tool details
- Transport
- remote
- Credential class
- self-provisionable
- Input schema
- not declared
- Output schema
- not declared
- Side-effect classification
- unclassified
Score history
| Day | Score | Tier | Methodology |
|---|---|---|---|
| 2026-10-20 | 100.0 | shallow | v0.2.0 |
Probe evidence
| Probe | Outcomes |
|---|---|
| schema_integrity | pass: 1 |
Raw request/response logs are not archived yet — the outcome counts above are drawn directly from every recorded trial.
Embed this score
Available for every tool, scored or not — not a verification perk. Always links back to this page.
[](https://vouch.tools/tools/47f83304-a57b-4893-aa47-f7d1a5f8e8fe)