Financial data APIs
for AI agents
SEC filings, company screening, and industry statistics.
Free tier included — 100 calls/month, no credit card required.
What's in the store
Three data domains, all queryable by AI agents.
SEC Financial Statements
Standardized income statements, balance sheets, and cash flow statements for 8,500+ public companies. Backed by raw XBRL metric timeseries from SEC EDGAR.
Company Screening
Filter the entire universe of SEC-reporting companies using arbitrary financial metric expressions. Find companies matching any criteria in seconds.
Industry Statistics
SIC-level aggregate statistics — P25, P50, and P75 percentiles — for any financial metric. Benchmark any company against its industry peers.
Connect in one line
Add CornerdataStore to any MCP-compatible client — Claude Code, Cursor, or any agent framework — and your AI instantly gains access to structured financial data.
Available tools
Add to .mcp.json
{
"mcpServers": {
"cds": {
"type": "http",
"url": "https://mcp.cornerdatastore.com/mcp",
"headers": {
"Authorization": "Bearer YOUR_CDS_API_KEY"
}
}
}
}Works with Claude Code, Cursor, Windsurf, and any MCP-compatible client. Get a free API key ↓
Setup by client
Step-by-step instructions for every major MCP-compatible AI assistant.
The fastest way to connect is the CLI. For team projects, use --scope project to write a .mcp.json that your whole team can share.
claude mcp add --transport http cds https://mcp.cornerdatastore.com/mcp \
--header "Authorization: Bearer YOUR_CDS_API_KEY"Scope options: --scope local (default, private), --scope project (shared via .mcp.json), --scope user (all your projects).
Try it yourself
Every endpoint is pay-per-call via HTTP 402. No API key registration required.
# Search for companies — returns HTTP 402 with payment info
curl -si "https://api.cornerdatastore.com/v1/sec/search?q=apple"
# Response headers include payment details:
# HTTP/2 402
# x-payment-required: {"accepts":[{"scheme":"exact","network":"eip155:84532",
# "maxAmountRequired":"1000","asset":"0x...","payTo":"0x..."}]}
# With an x402-compatible client, payment is handled automatically.
# Retry with proof header and receive JSON data.Full API reference at api.cornerdatastore.com/docs
Simple pricing
Start free. Upgrade when you need more.
Free
100 API calls per month
- ✓ All endpoints included
- ✓ MCP server access
- ✓ No credit card required
Pro
10,000 API calls per month
- ✓ Everything in Free
- ✓ 100× more calls
- ✓ Priority support
Enter your existing free key to upgrade