vacuum vs IBM OpenAPI Validator

vacuum7.9Visit IOIBM OpenAPI Validator7.8Visit

Higher score vacuum #4 in API Linting Tools 7.9/10 Open source ✓ 0 of 5 features Visit vacuum

vs

IO IBM OpenAPI Validator #5 in API Linting Tools 7.8/10 Free plan Free plan✓ 2 of 5 features Visit IBM

• vacuum fits best

  Teams wanting broad API linting and reporting

• IBM OpenAPI Validator fits best

  OpenAPI teams needing custom validation rules

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Side by side

Feature	vacuum 7.9/10 Visit ↗	IOIBM OpenAPI Validator 7.8/10 Visit ↗
At a glance
Editor score	7.9	7.8
Ranking	#4 in API Linting Tools	#5 in API Linting Tools
Best for	Teams wanting broad API linting and reporting	OpenAPI teams needing custom validation rules
Pricing model	Free	Free
Starting price	Open source	Free plan
Free plan	Not checked yet	✓ (best)
Free trial	—	—
Deployment	Cloud, Self-hosted	Self-hosted
Platforms	macOS, Linux	Windows, macOS, Linux
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features vacuum 0/5 · IBM OpenAPI Validator 2/5
OpenAPI linting	Not checked yet	✓ (best)
AsyncAPI linting	Not checked yet	—
GraphQL schema linting	Not checked yet	—
Custom rules	Not checked yet	✓ (best)
CI integration	Not checked yet	Not checked yet
Our review
Pros	Lints OpenAPI, AsyncAPI 3 and JSON Schema documents Supports Spectral-compatible rulesets and language-server integration Adds dashboards, offline HTML reports and CI/CD workflows	Validates OpenAPI 3.0.x and 3.1.x documents against specifications and IBM best practices Supports custom rulesets and rules from Spectral Offers npm, binary, and container installation with text or JSON output
Cons	Primarily a CLI and Go library, not a hosted API design workspace Requires teams to integrate it into local development or pipelines Support channels are community and documentation	Focused on OpenAPI; it does not lint AsyncAPI or GraphQL schemas Command-line workflows may not suit teams seeking a graphical interface Its validation focus is narrower than broader API linting tools
Our verdict	vacuum is an open-source command-line tool and Go library for developers and API teams that want automated quality checks on API specifications. Its scope spans OpenAPI, AsyncAPI 3 and JSON Schema, making it a fit for teams working across… Read the review →	IBM OpenAPI Validator is an open-source command-line tool for checking OpenAPI 3.0.x and 3.1.x documents against the OpenAPI specifications and IBM-defined best practices. It is aimed at developers and teams that want to validate API… Read the review →

Strengths and trade-offs

• vacuum — where it wins

  • Lints OpenAPI, AsyncAPI 3 and JSON Schema documents
  • Supports Spectral-compatible rulesets and language-server integration
  • Adds dashboards, offline HTML reports and CI/CD workflows

  Where it doesn't

  • Primarily a CLI and Go library, not a hosted API design workspace
  • Requires teams to integrate it into local development or pipelines
  • Support channels are community and documentation

• IBM OpenAPI Validator — where it wins

  • Validates OpenAPI 3.0.x and 3.1.x documents against specifications and IBM best practices
  • Supports custom rulesets and rules from Spectral
  • Offers npm, binary, and container installation with text or JSON output

  Where it doesn't

  • Focused on OpenAPI; it does not lint AsyncAPI or GraphQL schemas
  • Command-line workflows may not suit teams seeking a graphical interface
  • Its validation focus is narrower than broader API linting tools

• vacuum7.9/10 · Open source

  A broad, local-first API linting toolkit with reporting and CI support.

  Visit vacuumFull verdict →
• IOIBM OpenAPI Validator7.8/10 · Free plan

  A no-cost command-line validator for OpenAPI documents, with support for custom rulesets.

  Visit IBMFull verdict →