Turn Kafka, API and webhook events into entity timelines, states and alerts.
Entity Flow is a pre-commercial B2B software asset for operational traceability. It turns events from APIs, webhooks and Kafka into timelines and current-state views for products, batches, orders, equipment and shipments. IMPLEMENTED FEATURES Configurable JSON/Avro schemas and mappings; asynchronous ingestion; entity timelines, current-state projections and business links; business alerts and backfill; configurable CSV extracts; dead-letter handling and replay jobs; local users, roles and API tokens. TECHNOLOGY Express / TypeScript, KafkaJS, PostgreSQL and a Vue 3 / PrimeVue interface. A Next.js marketing website, Docker configurations, documentation, tests and synthetic Retail, RFID, food traceability, battery and reusable packaging scenarios are included. A Bigtable history adapter and Kafka Connect integrations are implemented but not fully validated against live cloud services. VERIFIED LOCALLY An October 28, 2026 audit demonstrated API-to-Kafka-to-PostgreSQL ingestion and timeline retrieval on an isolated stack. 177 backend tests passed with a temporary test configuration, plus a separate real PostgreSQL transaction test. Frontend compilation succeeded; the website built from a clean installation, including Docker Node 22. CURRENT STAGE No customers and no revenue. This is a software asset requiring further production work, not an established subscription business. Known work includes dependency updates, environment-secret cleanup and rotation, a replay concurrency risk and operational hardening. There is no subscription billing, application-level tenant isolation or certified regulatory compliance. Production load, availability and all cloud integrations have not been proven. Full technical disclosures are available to qualified buyers. PROPOSED SALE Application and website source, tests, documentation, deployment configurations, synthetic demos and the domain entity-flow.com. Third-party components retain their respective licenses. Exact ownership, scope and limited handover support will be documented in the sale agreement. PRIVATE DEMO No public demo is currently available. A private walkthrough can be arranged after an initial discussion; videos can be provided according to availability. Ideal buyer: an ERP/WMS/MES integrator, supply-chain software vendor or technical team with an existing traceability need.
Next step: <p>Focus on one vertical use case, validate it with prospective users, complete the disclosed security and operational work, and integrate the product into an existing ERP/WMS/MES or supply-chain offering. Build on the existing timelines, mappings, alerts and extracts. Evaluate licensing, deployment costs and performance before making production promises. Subscription billing or multitenancy would require additional development if relevant to the buyer’s business model.</p>
For sale
Asking price: $27,764 USD
What's included
Domain name, Source code, All related design work
Proposed scope: backend and frontend source, Next.js marketing website, tests, technical documentation, SQL/schema and Docker configurations, synthetic business demos, existing marketing videos and screenshots, and the domain entity-flow.com. Third-party components retain their respective licenses; the sale agreement will specify transferable rights and exclusions. No customer base, revenue, personal cloud accounts, private credentials or non-transferable third-party licenses are included. Limited technical handover can be agreed separately. Asking price: EUR 24,900 negotiable. SideProjectors displays USD only, so USD 27,763.50 is used as an indicative equivalent at EUR/USD 1.1150 (ECB reference, October 27, 2026). Final price, currency and scope are to be agreed in writing.
Reason for selling
I am offering Entity Flow as a technology asset to a buyer who can continue its development and commercialization. The intended buyer is an integrator, software vendor or technical operator with a traceability use case.
Project metrics
Average Monthly Revenue: Pre-revenue
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