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Financial data APIs
for AI agents

SEC filings, company screening, and industry statistics.Free tier included — 100 calls/month, no credit card required.

Get Free API KeyConnect via MCP

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.

Income StatementBalance SheetCash FlowXBRL
🔍

Company Screening

Filter the entire universe of SEC-reporting companies using arbitrary financial metric expressions. Find companies matching any criteria in seconds.

8,500+ CompaniesAny XBRL MetricP/EDebt Ratios
📈

Industry Statistics

SIC-level aggregate statistics — P25, P50, and P75 percentiles — for any financial metric. Benchmark any company against its industry peers.

P25 / P50 / P75SIC CodesPeer Benchmarking

Connect in seconds

Add CornerdataStore to claude.ai, Claude Desktop, Claude Code, Cursor, or any MCP-compatible client — and your AI instantly gains access to structured financial data.

Available tools

search_companiesget_company_infoscreen_companiesget_industry_statsget_financial_statementsget_metric_timeseriesget_latest_metriccompare_peersresolve_sectorget_insider_transactionsget_institutional_holdersget_beneficial_owners
1
Open Integrations. In claude.ai, go to Settings → Integrations and click Add Integration.
2
Paste the server URL.
https://mcp.cornerdatastore.com/mcp
3
Authorize with your API key. Claude will open an authorization page. Enter your CDS API key (starts with cds_sk_) and click Authorize. Get a free key ↓
4
Start chatting. Ask anything — “Screen for profitable small-caps with revenue growth > 20%” — and Claude will call the right tools automatically.

Setup by client

Step-by-step instructions for every major MCP-compatible AI assistant.

Claude.ai (Pro, Max, Team, Enterprise) supports remote MCP servers via the Connectors UI. Authentication is handled automatically — you'll be prompted to enter your API key on a secure authorization page.

  1. 1Navigate to claude.ai/settings/connectors
  2. 2Click "Add custom connector"
  3. 3Enter the URL: https://mcp.cornerdatastore.com/mcp — leave OAuth Client ID and OAuth Client Secret blank
  4. 4Click "Add" — an authorization page will open automatically
  5. 5Enter your CDS API key (starts with cds_sk_) and click "Authorize"

MCP connectors added in Claude.ai are automatically synced to Claude Code if you sign in with the same account. Get a free API key ↓

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

$0/month

100 API calls per month

  • ✓ All endpoints included
  • ✓ MCP server access
  • ✓ No credit card required
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Pro

$29/month

10,000 API calls per month

  • ✓ Everything in Free
  • ✓ 100× more calls
  • ✓ Priority support

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Full pricing details + x402 explainer →