CornerdataStore is a financial data API built for AI Agents, with a focus on company data from SEC filings. It provides AI assistants, scripts, and autonomous agents with standardized income statements, balance sheets, and cash flow statements for 8,500+ companies, as well as time-series XBRL metrics from SEC EDGAR. In addition to single-company lookups, it also supports company screening and SIC industry percentile statistics.
The product’s core value is packaging financial data into interfaces that are easy for AI systems to call. Track 1 uses MCP + API Key and can be integrated with claude.ai, Claude Code, and Cursor, making it suitable for users who want an AI assistant to automatically call tools during a conversation to complete financial statement analysis or screening tasks. Track 2 is aimed at code and autonomous agents, using the REST API directly and supporting per-call payments via x402. Available endpoints cover company search, company profiles, standardized financial statements, raw XBRL financial data, industry statistics, and company screening.
Pricing is relatively transparent: the free tier is $0/month, includes 100 calls/month, and requires no credit card; Pro costs $29/month and includes 10,000 calls. x402 is priced per call at $0.001–$0.01, with search and company profile endpoints being the cheapest, while screening and industry statistics cost more. x402 uses USDC payments on Base, requires no account and no monthly commitment, and is suitable for lightweight scripts or autonomous agents. However, the text indicates that it is still currently on the Base Sepolia testnet, with mainnet not yet live.
The strengths are its clear use-case positioning, transparent endpoint pricing, support for both MCP and REST, and a sensible separation between the two user paths. It is well suited to AI-assisted investment research, batch financial modeling, and peer comparison. The limitations are that its data coverage is mainly restricted to SEC-reporting companies, with no visible coverage of global markets, real-time quotes, news, or macro data. It also does not disclose update frequency, SLA, enterprise support, security/compliance details, or full SDK availability. The x402 USDC payment model is innovative, but it does introduce an adoption barrier.
CornerdataStore is suitable for developers using Claude/Cursor for financial analysis, quant or investment research automation teams, and AI Agent developers exploring self-funded data access. The source text does not provide information on access from China, so it needs to be tested in practice. For payments, both credit cards and USDC may involve compliance or availability uncertainties. If you need a more mature data source or broader coverage, consider comparing it with SEC EDGAR, Financial Modeling Prep, Alpha Vantage, Polygon.io, Nasdaq Data Link, and similar services.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on cornerdatastore.com official site.
cornerdatastore.com is an United States Dev Tools provider. TG4G tracks its product information, an overall rating of 7.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach cornerdatastore.com directly.