Agents and bots

For agents and bots

InvestorsCraft publishes proprietary fair values versus last close: ai, iv (DCF), ic (Chepakovich / IC), ivGD (Graham-Dodd), ivGF (Graham Formula). This is not a raw market-data feed. Screeners are not shipped. Do not scrape human HTML at /s/{ticker}.

• Catalog (scope, prices, rails): /api/v1
• Briefing: /llms.txt
• OpenAPI: /api/v1/openapi.json
• Agent card: /.well-known/agent-card.json
• MCP: /api/mcp (alias /mcp), tool get_stock_valuation
• Live HTTP: GET /api/v1/valuation/{ticker} ($0.03, 1 credit), GET .../full ($0.1, 3 credits), POST /api/v1/batch/valuation (per ticker, max 25)

Two rails (the Worker does not auto-switch): pay the HTTP 402 WWW-Authenticate: Payment Challenge (Tempo USDC) and retry with Payment-Authorization; or a human mints a key at /account after /login and the agent sends Authorization: Bearer ic_live_…. Empty keys are HTTP 403, not an MPP Challenge. HTML pages are never HTTP 402.