Softwr

APIs · head to head

Asyncapi vs Chainguard

Asyncapi logo

Asyncapi

APIs

Specification and tools for defining asynchronous APIs

From
Free
Rated
-
Full reviewWebsite
Chainguard logo

Chainguard

Cybersecurity

Secure-by-default open source software with hardened container images and libraries

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Asyncapi complex to implement and debug asynchronous operations due to their non-linear and concurrent nature; Chainguard containers Catalog at 19,000 USD/year expensive for teams under 10 people
  • They diverge on capability: Asyncapi covers API Specification, Chainguard covers Hardened container images.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Asyncapi and Chainguard actually diverge.

Attributes where Asyncapi and Chainguard differ
AttributeAsyncapiChainguard
Pricing modelopen-sourceLicensing by artifact type and team size
PlatformsWeb, CLI, IDE ExtensionsCloud, Container, VM
CategoryAPIsCybersecurity
Founded2019Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Asyncapi

  • API Specification
  • Code generation
  • Documentation
  • Multiple messaging protocols
  • Code generators
  • Specification support
  • Tools support
  • CLI support

Only in Chainguard

  • Hardened container images
  • CVE remediation SLA
  • SLSA L2/L3 builds
  • Sigstore signatures
  • SBOM generation
  • Language libraries
  • VM images
  • Artifact scanning

What people use each for

The jobs each tool is most often brought in to do.

Asyncapi

  • API Developmentnot Chainguard
  • API Gatewaynot Chainguard
  • API Testingnot Chainguard
  • API Documentationnot Chainguard
  • Microservicesnot Chainguard

Chainguard

  • Deploying hardened container images with minimal attack surfacenot Asyncapi
  • Meeting supply chain security requirements for regulated industriesnot Asyncapi
  • Reducing CVE exposure with contractual remediation guaranteesnot Asyncapi
  • Building secure language packages with automatic backportsnot Asyncapi
  • Verifying artifact provenance with Sigstore signaturesnot Asyncapi

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Asyncapi

  • Complex to implement and debug asynchronous operations due to their non-linear and concurrent nature
  • Keeping AsyncAPI documents up to date is challenging as systems evolve
  • Tracing and debugging asynchronous operations is more difficult than synchronous request-response patterns

Chainguard

  • Containers Catalog at 19,000 USD/year expensive for teams under 10 people
  • Per-image pricing for containers requires custom quotes with no transparency
  • Free tier limited to 5 container images for testing
  • Libraries pricing by ecosystem and developer count lacks transparent per-developer cost
  • VM image catalog pricing opacity makes cost estimation difficult

Pricing, plan by plan

Asyncapi

Free
  • Open SourceFree
    • AsyncAPI specification
    • Tools
    • Community support

Chainguard

Free
  • Free TierFree
    • Five container images to test and deploy
  • Containers Per-Image$undefined/custom
    • Licensed by quantity and type
    • Base images, application images, AI/ML images, FIPS variants
    • Custom pricing per image
  • Containers Catalog$19000/year
    • For 10-person engineering teams
    • 2,000+ container images
    • Contractual CVE remediation SLAs
  • Libraries Licensing$undefined/custom
    • Licensed by ecosystem (Python, Java, JavaScript)
    • Licensed by developer count
    • Unlimited pulls with no metering

Which should you pick?

Choose Asyncapi if

  • You need api specification.
  • You want to start without paying.
  • You work on Web, CLI, IDE Extensions.
  • You also want code generation.
Asyncapi review

Choose Chainguard if

  • You need hardened container images.
  • You want to start without paying.
  • You work on Cloud, Container, VM.
  • You also want cve remediation sla.
Chainguard review

Questions people ask

Is Asyncapi or Chainguard better?
Neither clearly leads. Asyncapi starts at Free and Chainguard at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Asyncapi or Chainguard?
Asyncapi starts at Free and Chainguard at Free.
Does Asyncapi or Chainguard run on more platforms?
Asyncapi runs on Web, CLI, IDE Extensions. Chainguard runs on Cloud, Container, VM.
Can I use Asyncapi for free?
Both have a free tier, so you can try either at no cost before committing.
What is Asyncapi best used for?
Asyncapi is most often used for api development, api gateway, api testing, api documentation. Of those, api development and api gateway are not what Chainguard is typically brought in for.
What can Asyncapi do that Chainguard cannot?
Asyncapi covers API Specification, Code generation, Documentation, Multiple messaging protocols. Chainguard covers Hardened container images, CVE remediation SLA, SLSA L2/L3 builds, Sigstore signatures.

Answered from the vendors’ own pages

Asyncapi: What is AsyncAPI used for?

AsyncAPI is an open-source specification for defining and documenting asynchronous APIs, message-driven systems, and event-driven architectures. It serves the same purpose for async APIs as OpenAPI does for REST APIs, providing standardized documentation, code generation, and tooling.

Source
Chainguard: How much is the Chainguard Containers Catalog?

The Containers Catalog is 19,000 USD per year for 10-person engineering teams, providing access to 2,000+ hardened container images.

Source
Asyncapi: Is AsyncAPI free to use?

Yes, AsyncAPI is completely free and open-source. It is hosted by the Linux Foundation and supported by community contributions and sponsorships from companies like Postman, IBM, IQVIA Technology, and Solace.

Source
Chainguard: What SLAs does Chainguard offer?

Chainguard provides contractual CVE remediation SLAs: 7 days for critical vulnerabilities, 14 days for high/medium/low severity, all with priority support.

Source
Asyncapi: What protocols and technologies does AsyncAPI support?

AsyncAPI supports multiple protocols and technologies including Kafka, RabbitMQ, MQTT, Socket.IO, AWS EventBridge, and others. It provides language support for JavaScript/TypeScript, Python, Java, Go, C#/.NET, Kotlin, and PHP.

Source
Chainguard: Can I try Chainguard before purchasing?

Yes. The free tier includes five container images for testing and deployment, allowing hands-on evaluation.

Source
Asyncapi: Does AsyncAPI have IDE support?

Yes, AsyncAPI has IDE extensions available for VSCode and IntelliJ, along with CLI utilities and GitHub Actions integration for developers.

Source
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