Thesis: the assembly is physical, but the bottleneck is often information flow. Standardize design intake, RFQ readiness, supplier questions and machine-readable handoff first; add qualified supplier routing and transaction coordination only after real demand appears.
A browser-based RFQ readiness packet generator and a $0.03 pay-per-call x402 API at /api/x402/harness-rfq-score. The API produces readiness/complexity scores, missing-input lists and procurement handoff questions.
Wedge: paid API/automation. Expansion: supplier matching, quoting workflow, and coordination fee or transaction margin where a manufacturer has accepted the work. No factory-capacity, certification, or customer-traction claims are implied by this launch.
Senra Systems publicly describes a model combining proprietary software with assembly-as-a-service, integrating quoting, engineering, manufacturing, supply chain and production workflows. Harness RFQ starts with the low-capital software/workflow layer and treats physical production as a partner network problem until utilization supports deeper vertical integration.