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StellaOps — Frequently Asked Questions (Matrix)

Quick glance

Question Short answer
WhatisStellaOps? A lightningfast, SBOMfirst containersecurity scanner written in .NET {{ dotnet }} with an Angular {{ angular }} web UI.
How fast is it? Warm scans finish in <5s on a 4vCPU runner; first scans stay <30s.
Is it free? Yes {{ quota_anon }} scans/day anonymously. Requesting a free JWT lifts the limit to {{ quota_token }}. A gentle reminder shows at 200; exceeding the cap throttles speed but never blocks.
Does it run offline? Yes — download the signed Offline Update Kit; see /offline/.
Can I extend it? Yes — restarttime plugins (ISbomMutator, IVulnerabilityProvider, IResultSink, OPA Rego). Marketplace GA inv1.0.

The full, alwaysuptodate roadmap lives at https://stellaops.org/roadmap/.
Snapshot:

Version Target date Lockedin scope (freeze at β)
v0.1 α Late2025 ΔSBOM engine, nightly rescan, Offline Kit v1, {{ quota_anon }}/{{ quota_token }} quota
v0.2 β Q12026 Zastava forbiddenimage scanner, registry sweeper, SDK β
v0.3 β Q22026 YAML/Rego policyascode, SARIF output, OUK autoimport
v0.4 RC Q32026 AI remediation advisor, LDAP/AD SSO, pluggable TLS providers
v1.0 GA Q42026 SLSA L3 provenance, signed plugin marketplace

Technical matrix

Category Detail
Core runtime C# 14 on .NET {{ dotnet }}
UI stack Angular {{ angular }} + TailwindCSS
Container base Distroless glibc (x8664 & arm64)
Data stores MongoDB 7 (SBOM + findings), Redis 7 (LRU cache + quota)
Release integrity Cosignsigned images & TGZ, reproducible build, SPDX 2.3 SBOM
Extensibility Plugins in any .NET language (restart load); OPA Rego policies
Default quotas Anonymous {{ quota_anon }}scans/day · JWT {{ quota_token }}

Quota enforcement (overview)

  • Counters live in Redis with 24h keys: quota:ip:<sha256> or quota:tid:<hash>.
  • Soft reminder banner at 200 daily scans.
  • Past the limit: first 30 excess requests delayed5s; afterwards 60s.
  • Behaviour is identical online and offline (validation local).

For full flow see docs/30_QUOTA_ENFORCEMENT_FLOW1.md.


Further reading

  • Install guide: /install/
  • Offline mode: /offline/
  • Security policy: /security/
  • Governance: /governance/
  • Community chat: Matrix #stellaops:libera.chat