Why MatJSON?
See why specifications, MTRs, compliance checks, APIs, automation, and AI benefit from a common machine-readable materials data format.
Read the case for MatJSONGuides
Practical starting points for publishing, invoking, validating, and consuming MatJSON documents.
Choose the right profile
Use MatSpec for intrinsic product-specification criteria and MatReq for requirements imposed by another governing document.
Read profile architecturePublish a schema-valid file
Declare the exact profile version and keep the source-document edition independent.
Download schemasInvoke requirements
Use the material requisition to invoke a complete standard, section, clause, annex, or direct purchaser requirement.
Read invocation modelReview before release
Do not equate JSON validation with engineering verification. Publish conformance and review status explicitly.
Read conformance levels