FoundersOS
An open-source MCP server that gives your AI the full context of your business -- from first conversation to production in under five minutes.
The Problem
Every founder using AI tools runs into the same wall: the AI doesn't know your business. Every session starts with re-explaining who your customers are, what's in the pipeline, what tasks are on the board, and what you decided last week. Context collapse is the tax you pay to work with powerful AI.
Existing solutions didn't fit. CRMs are built for sales teams, not founders running lean. Project tools have their own UIs to manage. Financial platforms are isolated from everything else. And none of them talk to your AI. The result is a workflow that's half-automated at best -- with the most important parts still stuck in copy-paste.
What FoundersOS Does
FoundersOS is an open-source MCP server that connects your AI directly to a complete business operating layer. Add one block to your Claude Desktop or Cursor config, run one SQL file in Supabase, and your AI gains access to 92 tools across 12 modules -- CRM, tasks, projects, playbooks, a double-entry financial ledger, semantic memory with vector search, RSS feeds, cross-domain dashboard surfaces, audit trails, and more.
There are no dashboards to learn and no new apps to open. You talk to your AI in natural language -- "What's on my plate today?", "Follow up with Acme about the renewal", "Show me the P&L for last quarter", "Run the onboarding playbook for our new customer" -- and the tools do the work. The AI knows your business because FoundersOS gives it the context it needs, structured and queryable, in real time.
The architecture is intentionally simple: self-hosted, MIT licensed, deploy-it-yourself over stdio. Your data stays in your Supabase project. No lock-in. No vendor. No premium tier. The project launched as a v1.0.0 public release on June 9, 2026.
The Technical Build
Built as a TypeScript monorepo with two published packages -- a core library and the MCP server -- wired together through a Supabase Postgres database with pgvector for semantic search.
MCP Server + Core Packages
A TypeScript monorepo with two published packages: @ourthinktank/founders-os-core (shared logic, DB clients, type definitions) and @ourthinktank/founders-os (the MCP server itself). Both publish to npm with provenance attestations. npx zero-install means no local setup beyond config.
Supabase + pgvector
All 12 modules share a single Supabase Postgres project -- CRM, tasks, financial ledger, memory, feeds, and everything else in one database. The memory module uses Supabase's pgvector extension for semantic embeddings, enabling natural-language recall across personal and org-scoped memory without a separate vector database.
92 MCP Tools, One Connection
Each of the 12 modules exposes a focused set of MCP tools -- from get_session_start (a cross-domain daily briefing) to run_playbook (fan-out orchestration across tasks and external MCP actions). Tool groups are opt-in via env var so teams only load what they need. The full suite passes 546 automated tests on every commit.
Multi-User Identity Model
Each team member runs their own MCP server instance. Identity is set via FOUNDERS_OS_USER_ID -- personal memory is scoped to that user, shared memory and CRM data are scoped to the org. Everyone pointing at the same Supabase URL is in the same org. No auth layer to configure; the shared database IS the org boundary.
Audit, Restore & Financial Integrity
Every write across all domains flows through a shared audit trail -- you can query full history and restore any soft-deleted record in one tool call. The financial module implements double-entry bookkeeping with multi-company support, per-user access control, P&L reporting, and strict transaction integrity enforced at the database layer.
OSS Launch Infrastructure
The public launch required a clean-room history reset (fresh repo, single initial commit) to strip internal docs and private identifiers from the git history before going public. GitHub Actions publishes both packages to npm with SLSA provenance on every version tag. Branch protection, community health files, and a public conduct inbox round out the OSS scaffolding.
What We Shipped
92 tools. 12 modules. A marketing site, setup wizard, full documentation, and a public OSS release -- all built and shipped by the OurThinkTank team.
CRM + Relationships
- Customer and contact management with pipeline dashboard
- Interaction logging (calls, emails, meetings)
- Relationship health surfacing (days since last contact)
- Live entity cards pulling cross-domain context per customer
Tasks, Projects + Playbooks
- Task creation, assignment, linking, and completion with progress notes
- Project records with task rollups grouped by status
- Single-owner accountability model enforced at the tool level
- Reusable playbooks that fan out to tasks and external MCP actions
Financial Ledger
- Double-entry bookkeeping with account and category management
- Multi-company support with per-user access control
- P&L reporting and financial summaries via natural language
- Transaction history, transfers, and audit trail
Memory + Feeds
- Semantic memory with pgvector -- store, recall, and deduplicate
- Personal and org-scoped memory with natural-language search
- RSS, Atom, and JSON feed management with AI briefings
- Bookmarks, pins, and feed-item read tracking
Surfaces + Diagnostics
- Session-start dashboard: overdue tasks, dormant customers, MTD financials, unread feeds
- Weekly retro and stuck-list cross-domain views
- Ping, version, usage guide, and interactive walkthrough tools
- Tags with auto-registration, typo detection, and soft validation
OSS Release + Docs
- Public GitHub repo with MIT license, community health files, and issue templates
- npm packages published with SLSA provenance attestations
- Marketing site at foundersmcp.com (Astro, full docs, setup wizard)
- 546-test automated suite green on CI for every commit
Built for Founders, Not Enterprises
Every design decision in FoundersOS optimizes for a founder running lean -- not a SaaS company with a dedicated ops team. The setup takes under five minutes. The tools use plain English. There are no dashboards to manage and no permission hierarchies to configure.
The self-hosted model is a feature, not a compromise. Your data lives in your Supabase project. You control the schema. You can extend any module. When you talk to Claude about a customer, a deal, a task, or last quarter's numbers, the AI is working with your real data -- not a sanitized summary you pasted into a prompt.
Building this internally first meant every design decision was tested against real daily use. The session-start dashboard, the one-owner task model, the playbook fan-out, the stuck-list surface -- all emerged from how founders actually need to work with AI, not from a product roadmap drawn in a vacuum.
"Stop re-explaining your business to your AI."
FoundersOS -- foundersmcp.com
Concept to Public v1.0 in Under a Year
March 2026: CRM + Memory v0.1.0
Initial release with CRM tools and semantic memory. Supabase migration strategy established (one project for all modules), pgvector integrated for memory recall, and the npm package published to OTT's private registry. foundersmcp.com domain acquired.
March – April 2026: Financial, Tasks + Expansion
Double-entry financial ledger, tasks, projects, playbooks, tags, feeds, surfaces, audit/restore, members, and diagnostics modules all shipped. 92 tools across 12 modules live and running on OTT's own production workflow. Marketing site built on Astro Starlight and deployed.
May – June 2026: OSS Launch Prep
Monorepo branching model established (main + develop), test fixtures sanitized (546 tests), internal docs stripped from the launch line, npm publishConfig switched to public registry, SLSA provenance added to the publish workflow, community health files authored.
June 8 – 9, 2026: Clean-Room History Reset + v1.0.0
Fresh repository created with a single "Initial public release" commit, eliminating internal history from the public record. Both packages published to npm with provenance. GitHub repo flipped public. The old private repo retained as founders-os-archive.
Open Source. Production-Ready. Free Forever.
FoundersOS launched as a public v1.0.0 release in June 2026 -- a complete, MIT-licensed MCP server that any founder or small team can self-host in under five minutes. The project began as OTT's own internal operating system and evolved into a polished open-source product over the course of a single year.
92 tools. 12 modules. One config entry. No lock-in. FoundersOS is the business context layer your AI has been missing.