{"protocolVersion":"0.3.0","name":"AgentStack Research API","description":"Machine-payable market research for AI agents: taxonomy-classified company announcements and compound research bundles with one identical JSON schema across markets. Pay per call in USDC on Base via HTTP 402 (x402); no API keys, no signup. Data and classifications only. Not investment advice.","url":"https://agentstack-research-3bnlllaboa-ts.a.run.app/","preferredTransport":"HTTP+JSON","version":"0.2.0","documentationUrl":"https://agentstack-research-3bnlllaboa-ts.a.run.app/llms.txt","provider":{"organization":"Lumen Machines","url":"https://lumenmachines.com"},"capabilities":{"streaming":false,"pushNotifications":false,"extensions":[{"uri":"https://github.com/google-a2a/a2a-x402/v0.1","description":"Data endpoints are paid per-call via the x402 protocol (USDC on Base). Unpaid requests receive HTTP 402 with payment requirements.","required":true}]},"defaultInputModes":["application/json"],"defaultOutputModes":["application/json"],"skills":[{"id":"market-announcements","name":"Market announcements","description":"Parsed, taxonomy-classified company announcements for one ticker. Markets — Australia (ASX): coming soon; United States (SEC/EDGAR): live. Paid per call via x402.","tags":["market-data","filings","x402","usdc","paid-api"],"examples":["GET /v1/us/announcements/AAPL"]},{"id":"research-bundle","name":"Research bundle","description":"Compound bundle per ticker: announcements, extracted figures, key financials, neutral summary. Paid per call via x402.","tags":["research","market-data","x402","paid-api"],"examples":["GET /v1/us/research/AAPL"]}]}