Fibo

Give your financial agent access to the Financial Industry Business Ontology (FIBO).

Paste into Claude Code:

Install fibo-mcp from https://github.com/NeuroFusionAI/fibo-mcp

Installation

If already in fibo-mcp directory, skip clone and cd. Run all commands from the fibo-mcp directory:

git clone https://github.com/NeuroFusionAI/fibo-mcp.git && cd fibo-mcp
uv sync
claude mcp add --scope user fibo-mcp -- uv run --directory "$(pwd)" main.py
# Restart Claude Code to load the MCP

With OWL-RL Materialization (Recommended for symbolic reasoning)

Materialization applies the OWL-RL profile and caches the inferred graph. Triple counts depend on the pinned FIBO revision. OWL-RL is a scalable subset of OWL, not unrestricted or complete OWL reasoning.

# Step 1: Build cache first (Ctrl+C after "Ready to serve")
uv run main.py --materialize

# Step 2: Add MCP (instant startup from cache)
claude mcp add --scope user fibo-mcp -- uv run --directory "$(pwd)" main.py --materialize

Diagramming Skill

The repo includes a diagramming skill (.claude/skills/diagramming_expert/) for ASCII visualizations.

When installing via Claude Code, ask user:

Diagramming skill scope:

• Project scope only (default - already in .claude/skills/)
• User scope (all projects) - copy to ~/.claude/skills/

# User scope skill (optional)
cp -r .claude/skills/diagramming_expert ~/.claude/skills/

Other MCP Clients (Cursor, Claude Desktop, etc.)

Add to your MCP config file:

{
  "mcpServers": {
    "fibo-mcp": {
      "command": "uv",
      "args": ["run", "--directory", "/path/to/fibo-mcp", "main.py"]
    }
  }
}

With materialization:

{
  "mcpServers": {
    "fibo-mcp": {
      "command": "uv",
      "args": ["run", "--directory", "/path/to/fibo-mcp", "main.py", "--materialize"]
    }
  }
}

Build cache first: uv run main.py --materialize (Ctrl+C after "Ready to serve")

Uninstall

# Claude Code
claude mcp remove fibo-mcp

# Remove user-scope skill (if installed)
rm -rf ~/.claude/skills/diagramming-expert

Examples

"What is money?"

Without fibo-mcp

With fibo-mcp

Money is a medium of exchange, a store of value, and a unit of account that facilitates economic transactions. Forms of Money: Commodity money - Physical items with intrinsic value (gold, silver) Fiat money - Government-issued currency not backed by commodity (USD, EUR) Digital/Electronic money - Bank deposits, digital payments Cryptocurrencies - Decentralized digital assets like Bitcoin Money's value ultimately rests on collective trust and acceptance.

Claude automatically queries FIBO... According to FIBO: Currency: "medium of exchange value, defined by reference to the geographical location of the monetary authorities responsible for it" FIBO distinguishes: Currency - the medium of exchange itself Monetary Amount - a quantity denominated in a currency Currency Identifier - ISO 4217 codes (USD, EUR, etc.)

"What is a country?"

Without fibo-mcp

With fibo-mcp

A country is a distinct territorial body or political entity with its own government, defined borders, and sovereignty. Key characteristics: Defined territory Permanent population Government Sovereignty Recognition by other countries There are approximately 195 recognized countries today.

Claude automatically queries FIBO... Sovereign State: "non-physical juridical entity that is represented by one centralized government that has sovereignty over a geographic area" Key characteristics from FIBO: Represented by one centralized government Has a permanent population Has defined territory Has capacity to enter into relations with other sovereign states Related: Federated Sovereignty, Regional Sovereignty

"What is corporate?"

Without fibo-mcp	With fibo-mcp
A corporation is a legal entity separate from its owners: Limited liability - Owners not personally responsible for debts Perpetual existence - Continues regardless of ownership changes Legal personhood - Can own property, enter contracts, sue and be sued Transferable ownership - Shares can be bought and sold	Claude automatically queries FIBO... Corporation: "formal organization that is a legal entity (artificial person) distinct from its owners, created under the jurisdiction of the laws of a state or nation" Related subclasses include Stock Corporation, For Profit Corporation, and Not-for-Profit Corporation. Formation: Articles of Incorporation, Corporate Bylaws

Why FIBO?

Finance has a semantics problem—the same "trade," "counterparty," or "position" can mean different things across desks, systems, vendors, and jurisdictions. FIBO provides a formal, machine-readable ontology (OWL/RDF) so data from contracts, market feeds, and internal systems can be integrated and queried with shared meaning.

Contributors include Citigroup, Deutsche Bank, Goldman Sachs, State Street, Wells Fargo, CFTC, US Treasury OFR, and others. Standardized by EDM Council and OMG.

HTTP MCP (local by default)

The HTTP listener binds to 127.0.0.1 by default. Do not expose it directly to the internet: the server accepts read-only SPARQL and caps returned rows, but it does not provide application authentication or rate limiting. Put an authenticated, rate-limited gateway in front of it before any remote use.

# Start HTTP server
uv run main.py --http --port 8000

Technical Details

Data	299 RDF/OWL source files at the pinned revision; loaded triple count is logged at startup
Base graph	133,498 triples; 3,346 owl:Class subjects; 1,216 typed RDF/OWL properties; 16,665 URI subjects
Cache	./data/fibo.ttl (base), ./data/fibo_materialized.ttl (with --materialize)
Source revision	f59157fe156e3d91b1c045222d0a7dc06b7d78a2 by default; override with FIBO_REVISION
Refresh cache	uv run main.py --force-download

Server Flags

Flag	Description
--materialize	Enable OWL-RL inference (adds startup time; the materialized graph is cached)
--bm25-top-k N	Number of BM25 search results (default: 10)
--force-download	Re-download the configured FIBO revision
--http	Run as HTTP server instead of stdio
--port N	HTTP server port (default: 8000)

References

• FIBO Specification
• Diagramming Skill