Developers
Data, API and MCP
Everything on this site is free to use with a link to sbfindex.com (CC BY 4.0). Pull the live index, the court-record datasets, or plug the index straight into an AI assistant.
Ask your AI about it: MCP server
The index runs a Model Context Protocol server, so Claude, ChatGPT and other agents can query the live number and the court record directly, and cite it.
https://sbfindex.com/mcp
- Claude: Settings, Connectors, Add custom connector, then paste the URL.
- ChatGPT: Settings, Connectors (developer mode), Create, then paste the URL.
- Claude Code:
claude mcp add --transport http sbf-index https://sbfindex.com/mcp
Tools: get_sbf_index, get_anthropic_stake, search_holdings, list_estate_sales, list_anthropic_buyers, get_media_scoreboard, search_court_filings. Try asking: "What is SBF's old Anthropic stake worth right now, and who bought it?"
Embed the live number
Drop this into an article or newsletter. It updates every 30 seconds and links back here.
<iframe src="https://sbfindex.com/embed" width="100%" height="170" style="border:0" title="SBF Index, live"></iframe>
For the Anthropic stake instead, use https://sbfindex.com/embed?show=anthropic.
JSON API
/api/index: the live index by position, the Anthropic math, and the prices behind it. Refreshes every 30 seconds./data/holdings.json: all 461 positions with sources./data/sales.json: 112 estate sales with CourtListener links./data/buyers.json: the 45 Anthropic purchases from the court schedules./data/sources.json: the court filings with links./sbf-index.csv: the daily series since Jan 1, 2021, by position./llms.txt: a plain-text brief for language models.
curl -s https://sbfindex.com/api/index | jq '.value_usd, .anthropic.value_usd'
CORS is open. Please link to sbfindex.com when you publish anything built on it, and email hi@sbfindex.com if you find a mistake.