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Comparison · Infra & APIs

Scalar vs Clair

A side-by-side editorial comparison of Scalar and Clair — release velocity, themes, recent moves, and the top alternatives to consider.

Scalar vs Clair: at a glance

FeatureScalarClair
SectorInfra & APIsInfra & APIs
Velocity score5.02.5
Sparks · 30d00
Top themesapi-documentation, sdk-generation, asyncapi, ai-agentscontainer-security, vulnerability-scanning, sbom, red-hat
Last editorial update1d ago8h ago
WebsiteVisit →Visit →

What is Scalar?

Scalar's Agent Chat now asks before every API call and hides your saved keys.

Scalar ships several package lines on separate version tracks. The November 10 batch makes the API client's Agent Chat ask for approval before any AI-generated request, including GETs, and redacts saved credentials before responses reach the model. The API reference 1.78 renders Avro, RAML and Protobuf schemas in AsyncAPI messages, the ASP.NET Core integration adds multipart file controls and OpenID Connect defaults, and the mock server fixes decimal and nested-response bugs.

Read the full Scalar trajectory →

What is Clair?

Clair 4.10 RC can read SBOMs to match Java vulnerabilities.

Clair cut its first 4.10.0 release candidate on November 13, eleven months after 4.9.0. Its Java indexers can now read CycloneDX SBOM files and treat them as the source of truth, and Red Hat's VEX data now covers Maven advisories, so Java packages in Red Hat images can be matched. It also reduces memory use when many packages share a source package.

Read the full Clair trajectory →

Scalar vs Clair: editorial side-by-side

S
Scalar
INFRA · APIS
5.0

Scalar's Agent Chat now asks before every API call and hides your saved keys.

◆ Current state

Scalar ships several package lines on separate version tracks. The November 10 batch makes the API client's Agent Chat ask for approval before any AI-generated request, including GETs, and redacts saved credentials before responses reach the model. The API reference 1.78 renders Avro, RAML and Protobuf schemas in AsyncAPI messages, the ASP.NET Core integration adds multipart file controls and OpenID Connect defaults, and the mock server fixes decimal and nested-response bugs.

◆ Where it's heading

Releases alternate between broader spec coverage (AsyncAPI schema formats, OpenAPI 3.2 details) and safety rails around automated actions, from the hardened CORS proxy to confirmation prompts in generated CLIs and now approval-gated Agent Chat.

◆ Prediction

Expect more guardrails on agent-driven requests and further AsyncAPI rendering work in the reference, shipped as small parallel releases.

C
Clair
INFRA · APIS
2.5

Clair 4.10 RC can read SBOMs to match Java vulnerabilities.

◆ Current state

Clair cut its first 4.10.0 release candidate on November 13, eleven months after 4.9.0. Its Java indexers can now read CycloneDX SBOM files and treat them as the source of truth, and Red Hat's VEX data now covers Maven advisories, so Java packages in Red Hat images can be matched. It also reduces memory use when many packages share a source package.

◆ Where it's heading

Since 4.8 Clair has moved from Red Hat's older OVAL data to VEX, and each release follows Red Hat's security data more closely. 4.10 adds SBOMs as an input, so Clair can match what an image's own manifest declares, not only what it finds on disk.

◆ Prediction

More 4.10 release candidates and then a final are likely; the long gap between releases suggests that could take weeks.

Alternatives to Scalar and Clair

Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Scalar or Clair.

See all Scalar alternatives → · See all Clair alternatives →

Recent activity from Scalar and Clair

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 13h agoClairClair 4.10 RC reads CycloneDX SBOMs for Java matching
  2. 2d agoScalarMock server 0.21.2 returns valid base64 examples
  3. 2d agoScalarAPI client 1.1.49 imports large specs with YAML merge keys
  4. 2d agoScalarAPI client 0.12.52: polish and bug fixes
  5. 2d agoScalarAPI Reference 1.78.1 renders large API Gateway exports
  6. 4d agoScalarMock server 0.21.1 fixes decimal checks and nested responses
  7. 4d agoScalarASP.NET Core 1.1.48: multipart file controls and OIDC defaults
  8. 11mo agoClairClair 4.9 moves CVSS data to NVD's 2.0 feeds
  9. 2y agoClairClair 4.8 replaces Red Hat OVAL data with VEX
  10. 2y agoClairClair 4.7.4 changes the default layer download location
  11. 2y agoClairClair 4.7.3 requires TLS 1.2 or newer
  12. 3y agoClairClair 4.7.2 drops the retired CRDA source

Frequently asked questions

What is the difference between Scalar and Clair?

They serve adjacent needs but don't currently overlap on shipped themes. Scalar is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is Scalar better than Clair?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Scalar is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.

What are the best alternatives to Scalar?

Top Scalar alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Scalar alternatives" section above for the current picks, or visit /alternatives/scalar for the full list with editorial commentary on each.

What are the best alternatives to Clair?

Top Clair alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Clair alternatives" section above for the current picks, or visit /alternatives/clair for the full list with editorial commentary on each.