Nexsus
Nexsus is an Australian sole proprietorship offering a private structured memory workspace for AI assistants (Claude, ChatGPT, Gemini) via the open MCP standard, serving individuals, sole traders, and households through a freemium subscription model with database-enforced data integrity.
- Company typePrivate
- Founded2026
- HeadquartersSydney, Australia
- Headcount1–10
- GTM typeB2B and B2C
- OfferingSoftware
What Nexsus does
Nexsus is an Australian sole proprietorship operated by Aruni Ishanka Wickramasinghe (ABN 89 335 490 366, New South Wales), offering a private structured memory workspace ("Nexsus — The substrate") that AI assistants connect to via the open Model Context Protocol (MCP). The product serves individuals, students, sole traders, small businesses, and households who use Claude, ChatGPT, Gemini or Claude Desktop and need a persistent, queryable system of record across sessions. Users describe operations in natural language ("New customer: the Hendersons"; "Job for the Hendersons: replace hot water system") and Nexsus creates typed records, links them, and maintains semantic search and server-side calculations. The architecture rests on PostgreSQL with pgvector/HNSW indexes, Voyage AI's voyage-3-large embeddings (1024 dimensions), and a Python FastMCP server speaking JSON-RPC 2.0 over streaming HTTP with per-customer OAuth. Distinctive technical claims include Balance Equations (data-integrity rules enforced inside the database engine itself, rejecting writes that violate referential integrity with named error codes), six-way reconciliation (six independent views of every record must agree before commit), three-vector search (one deterministic structural vector plus two semantic embeddings), and an append-only history with monotonic 40-digit Nexsus codes. Infrastructure runs on Railway (US cloud) with database-level tenant isolation; transactional email is handled by Resend.
Nexsus firmographics
Firmographics- Name
- Nexsus
- Legal name
- Aruni Ishanka Wickramasinghe, trading as Nexsus
- Website
- https://nexsus.com.au
- Company type
- Private
- Founded year
- 2026
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Nexsus is an Australian sole proprietorship offering a private structured memory workspace for AI assistants (Claude, ChatGPT, Gemini) via the open MCP standard, serving individuals, sole traders, and households through a freemium subscription model with database-enforced data integrity.
- Ownership category
- akta.pro rank
Nexsus industry classification
Industry- Product category
- AI Memory Workspace
- NAICS
- Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518)
- SIC
- Services-Computer Programming Services (7371), Services-Computer Integrated Systems Design (7373)
- akta.pro primary industry
- Developer Experience Platforms for Enterprise (IDEs, CI/CD, Dev Portals) (HDAEAKAI)
Keywords
Where Nexsus is headquartered
LocationHeadquarters
- HQ city
- Sydney
- HQ country
- Australia
- HQ region
- Oceania
Offices1 record
Markets served
Nexsus business model
Business model- GTM type
- B2B and B2C
- Offering type
- Software
- Cost components
- Infrastructure, Technology or R&D, Personnel, Marketing or Sales, Operations
Revenue model
- Subscription Plans (Storage + Tool Calls): Monthly subscription plans (Free, Entry, Starter, Growth, Scale) providing storage allowances and monthly tool-call (API call) allowances. Paid plans are billed monthly through Stripe. Usage beyond plan limits incurs modest overage charges.
- Usage-Based Overage: On paid plans, exceeding storage or tool-call limits results in overage billing: $1.00 per additional GB of storage, $2.00 per additional 1,000 tool calls. This ensures busy months never become outages.
- Freemium Entry: Free plan with lifetime allowance of 75 MB storage and 750 tool calls — no time limit, no credit card required. Designed to let users evaluate the product at their own pace before upgrading.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Pay-as-you-go | Free — no card, no clock, generous lifetime allowance |
| Subscription | Monthly | Entry — $5.99/month for individuals getting started |
| Subscription | Monthly | Starter — $29.99/month for small teams |
| Subscription | Monthly | Growth — $119/month for teams scaling up |
| Subscription | Monthly | Scale — custom limits and support for large-scale deployments |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels4 records
Nexsus product offering
Product offeringCore offering
Nexsus — The substrate is a private, structured memory workspace for AI assistants. Customers sign up online, receive an isolated database-backed workspace, and connect their AI assistant (Claude, ChatGPT, Gemini, Claude Desktop, or any MCP-speaking client) via the open Model Context Protocol. The assistant can then read, write, link, and semantically search structured records across sessions, while Nexsus enforces data integrity through database-engine-level balance equations.
Product overview
Nexsus — The substrate is a single unified product: a private AI memory workspace that gives AI assistants persistent, structured memory. The product consists of the main workspace (hosted at nexsus.com.au), a customer dashboard (dash.nexsus.com.au) for viewing and managing stored data, and an MCP API that connects to Claude, ChatGPT, Gemini, and Claude Desktop. Users interact entirely through natural language — describing what they want (customers, orders, notes, decisions) and Nexsus structures, stores, and links the data. The platform enforces data integrity through mathematical balance equations, preventing inconsistent data at the database level. Pricing tiers (Free, Entry, Starter, Growth, Scale) are differentiated by storage and API call limits.
Differentiator
Problem solved
Functional benefit
Products and services
- Nexsus — The substrate (AI memory workspace) A private, isolated workspace that gives AI assistants (Claude, ChatGPT, Gemini, Claude Desktop, or any MCP-speaking client) a persistent, structured memory. Customers sign up online, connect their assistant via the open MCP standard, and let it read, write, link, and semantically search structured records across every session, with data integrity enforced by database-engine-level balance equations.
Companies that use Nexsus
Customer profileSegments4 records
Ideal customer profiles4 records
Nexsus technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration4 records
AI capability6 records
Feature5 records
Nexsus partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered core infrastructure, supporting and core ecosystem.
- Railwaycore infrastructureRailway is the cloud infrastructure provider that hosts the Nexsus Service and its databases. All Nexsus customer data and the service itself run on Railway's platform, located in the United States. Railway provides the compute and database backbone for the multi-tenant architecture.
- Stripecore infrastructureStripe handles payment processing and subscription billing for all Nexsus paid plans. Full credit card numbers never reach Nexsus servers; Nexsus receives only subscription tier, payment status, and invoice events from Stripe.
- Voyage AIcore infrastructureVoyage AI provides embedding generation for Nexsus's semantic search. Snippets of workspace text are sent to Voyage AI to compute 1024-dimension embeddings (voyage-3-large model) that power the semantic recall feature. Embeddings are stored in the user's workspace alongside their data.
- ResendsupportingResend handles transactional email delivery for Nexsus — including email address verification, allowance warning notices (at 80% and 90%), and account wind-down notices. Nexsus sends the email address and notice content; Resend delivers it.
- Anthropic (Claude)core ecosystemClaude is one of the primary AI assistants that can connect to Nexsus via the open MCP standard. Users add their Nexsus MCP server URL as a custom connector in Claude and authorize via OAuth. Claude Desktop is also explicitly supported.
- OpenAI (ChatGPT)core ecosystemChatGPT connects to Nexsus via the MCP standard as a custom app over OAuth. Users configure Nexsus as an app within ChatGPT's settings using their Nexsus MCP server URL.
- Google (Gemini)core ecosystemGemini is listed alongside Claude and ChatGPT as an AI assistant that works with Nexsus over the open MCP standard.
Recent moves6 records
Expansion highlights6 records
Nexsus competitors and assessment
Company assessmentDirect peers
- Letta: Letta provides a stateful agent framework with long-term memory, built on MemGPT research. It targets developers building AI agents that need persistent memory, making it a direct peer in the agent-memory substrate category.
- Mem.ai: Mem is an AI-powered personal knowledge management tool that automatically organizes notes and surfaces them via AI search. It is the closest direct competitor to Nexsus in the AI-native personal knowledge workspace category, with similar horizontal individual-user positioning.
- Personal AI: Personal AI offers a personal AI assistant trained on a user's own data, functioning as a personal knowledge substrate. It competes in the same individual-user memory workspace segment as Nexsus.
- Cognee: Cognee is an open-source memory layer for AI agents that builds knowledge graphs from unstructured data and supports MCP integration. It overlaps with Nexsus on structured/semantic memory for agents and the use of MCP as the integration surface.
- Zep (Graphiti): Zep offers a memory layer for AI agents with temporal knowledge graph memory and long-term context retrieval. It is one of the closest direct peers to Nexsus, focused on giving AI assistants persistent, structured memory through an API rather than a UI.
- Rewind AI / Limitless: Limitless (formerly Rewind) provides an AI-powered memory and meeting assistant that captures and recalls personal context across a user's day. It is a direct peer in the personal AI memory category with both consumer and prosumer appeal.
Broad incumbents
- Notion AI: Notion is an established workspace and documentation platform with built-in AI features that provides persistent structured memory across notes, databases, and projects. It overlaps with Nexsus on the personal/team knowledge management use case and represents the mainstream incumbent Nexsus must differentiate against.
- NotebookLM (Google): NotebookLM is Google's AI notebook that ingests personal sources and provides grounded, persistent knowledge. It overlaps with Nexsus on the personal knowledge substrate use case and is positioned as a built-in Google offering rather than a third-party product.
- LangChain Memory: LangChain provides memory primitives and integrations for building stateful LLM applications, used by developers to add persistent memory to AI agents. It is a broader incumbent in the agent-memory toolchain rather than a consumer-facing workspace.
- ChatGPT Memory (OpenAI): ChatGPT's native memory feature allows the assistant to remember user details across sessions and is the most direct potential substitute for Nexsus. It is a broad incumbent threat because it ships free with the assistant itself, potentially compressing demand for a separate memory substrate.
Market position
Strengths1 record
Weaknesses1 record
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Nexsus social profiles
Digital presenceNexsus financial estimates
Financial estimateRevenue estimate
Valuation estimate
Nexsus leadership team
Management profileNumber of profiles
Profiles1 record
Nexsus funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Nexsus M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Nexsus
What does Nexsus do?
Nexsus — The substrate is a private, structured memory workspace for AI assistants. Customers sign up online, receive an isolated database-backed workspace, and connect their AI assistant (Claude, ChatGPT, Gemini, Claude Desktop, or any MCP-speaking client) via the open Model Context Protocol. The assistant can then read, write, link, and semantically search structured records across sessions, while Nexsus enforces data integrity through database-engine-level balance equations.
Is Nexsus a public or private company?
Nexsus is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Nexsus founded?
Nexsus was founded in 2026. It employs 1 to 10 people.
Where is Nexsus based?
Nexsus is headquartered in Sydney, Australia, in the Oceania region.
How does Nexsus make money?
Three revenue lines are on record. Subscription Plans (Storage + Tool Calls) is the primary driver. The others are usage-Based Overage and freemium Entry.
Who are Nexsus's main competitors?
Direct peers on record are Letta, Mem.ai, Personal AI, Cognee, Zep (Graphiti) and Rewind AI / Limitless. Broad incumbents are Notion AI, NotebookLM (Google), LangChain Memory and ChatGPT Memory (OpenAI).
Does Nexsus have an API?
Yes. Nexsus exposes its capabilities over the open Model Context Protocol (MCP) standard. Developers and AI assistants connect via MCP tools including: nexsus_create_model, nexsus_add_field, nexsus_submit_record, nexsus_update, nexsus_list_records, nexsus_search, nexsus_calc, nexsus_link, nexsus_unlink, nexsus_history, nexsus_registry, and nexsus_health. Built on FastMCP over the official MCP SDK, speaking JSON-RPC 2.0 over streaming HTTP with per-customer OAuth authentication. The MCP server URL is https://app.nexsus.com.au/mcp. Developer documentation is at www.nexsus.com.au/docs.
What industry is Nexsus in?
Nexsus's product category is AI Memory Workspace. Its primary akta.pro industry code is HDAEAKAI, Developer Experience Platforms for Enterprise (IDEs, CI/CD, Dev Portals). Its NAICS code is 518 and its SIC code is 7371.