TL;DR: Connecting Claude to real-world market data takes three steps: (1) get a key, (2) add Arkolith's MCP server to your client, (3) ask in plain language. Prefer code? Hit the REST API with a bearer token. Either way, every result comes back sourced to its origin.

Three steps

Three steps from zero to your agent querying real-world data.

1. Get a key

Sign up and open your credits page to mint an API key. New accounts get free credits, so you can test before paying. Treat the key like a password.

2. Add the MCP server to Claude

In Claude Code, register the server once. It speaks the Model Context Protocol over HTTP, authenticated with your key:

claude mcp add --transport http arkolith \
  https://arkolith.com/api/mcp \
  --header "Authorization: Bearer YOUR_KEY"

That's it. Claude now sees Arkolith's tools (search, fund lookups, holdings, and more) and can call them on demand. New to MCP? Start with What is an MCP server?.

3. Ask in plain language

Now you can ask things like "Which funds added to their position in Apple last quarter?" and the agent will pick the right tools, chain them, and answer with sourced figures plus links you can verify.

Prefer code? Use the REST API

The same data is available over a plain REST API. Pass your key as a bearer token:

# Your remaining credits
curl -H "Authorization: Bearer YOUR_KEY" \
  https://arkolith.com/api/v1/funds

# Search across funds, managers, and holdings
curl -H "Authorization: Bearer YOUR_KEY" \
  "https://arkolith.com/api/v1/search?q=berkshire"

Full endpoint reference, rate limits, and field notes live in the API docs.

Why every result is sourced

Each datapoint Arkolith returns carries its source, timestamp, and a canonical URL. That is deliberate: it lets your agent cite primary evidence instead of hallucinating a number, and it gives you (or an auditor) a way to verify any claim. Provenance is the product.

Frequently asked questions

Does this cost money?

You start with free credits. After that it is usage-based: you pay for the calls you make, with no per-seat licenses. See pricing.

Which clients work?

Any MCP-compatible client. Claude Code is the most common; the same server works wherever MCP is supported.

What data can I query today?

SEC EDGAR 13F holdings are live now, with more real-world sources rolling out. Browse what's there on the funds directory.

Ready? Get a key and connect Arkolith to your agent in a few minutes.