Connect once and your agent taps markets, filings, and the real-world economy.
The data others leave trapped in filings and PDFs, now a single clean call.
Free to start. Every datapoint sourced. Fast enough to act on.
Built for AI agents, and the analysts who direct them.
$ curl -H "Authorization: Bearer $KEY" arkolith.com/api/v1
Markets, filings, and the physical economy. Structured, sourced, and exposed as composable tools your agent can call.
Every datapoint carries its origin, so the answer is grounded, not guessed.
Every datapoint ships with its source and timestamp, so your agent cites primary evidence instead of hallucinating a number. Traceability isn't a feature here. It's the product.
Connect Arkolith to Claude, ChatGPT, or any MCP client in one step. Small, sharp tools your agent discovers and chains: lookups, search, time-series, and cross-source joins.
Free credits at signup, then pay for the calls you make. Usage-based, no per-seat licenses, cancel anytime. Your agent runs the inference, so the data stays cheap.
There's no dashboard to learn. Your agent connects once, then queries real-world data on your behalf, and every answer comes back with its receipts.
Add the MCP server to Claude or any client, or call the REST API with a bearer token.
Your agent picks the right tools (lookups, search, time-series, cross-source joins) and chains them.
Every field returns with its source, timestamp, and a canonical URL to verify.
Your agent answers with grounded numbers and links you straight back to the primary source.
Live 13F holdings, insider trades and institutional ownership — browse it in seconds, or query it from your agent.
What Buffett, Burry, Ackman and 25+ top investors own — quarter by quarter.
Browse investors →Which stocks the most hedge funds hold, are buying, and are quietly selling.
Browse stocks →Institutional 13F filers — holdings, AUM and quarter-over-quarter changes.
Browse funds →SEC Form 4 insider buys & sells, normalized within minutes of filing.
Browse insiders →The 13F dataset is live now. Query it from your agent or browse it yourself, with more sources rolling out.
See what the world's largest funds hold, and how those positions shift quarter over quarter.
Browse funds →Find the names many funds are piling into, or quietly exiting, across the latest filings.
Browse funds →Rebuild any fund's holdings over time, straight from raw SEC 13F-HR filings.
Browse funds →Connect the MCP server and ask in plain language. Arkolith returns sourced, structured data.
Read the docs →JSON endpoints for funds, holdings, and search. Bearer-token auth, predictable shapes.
Read the docs →Each datapoint links back to its primary source, so you can trust what your agent tells you.
Read the docs →Public-domain data, acquired and kept clean, exposed through one API with provenance on every field.
Sign up free, mint a key, and connect Arkolith to your agent in minutes. Real-world data, sourced and ready to query.