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Welcome to DebtStack

Corporate structure and debt analysis is complex. Even with AI, achieving accuracy, speed, and cost-effectiveness requires significant engineering. DebtStack does this hard work once, giving you instant API access to pre-computed, quality-assured credit data.

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The Problem

Extracting accurate corporate structure and debt data from SEC filings is surprisingly hard:
  • Accuracy challenges: LLMs return malformed JSON, misinterpret amounts, confuse entity names
  • Speed variability: A single extraction can take 90-300 seconds with multiple LLM calls
  • Cost uncertainty: Ad-hoc extraction costs $0.03-0.50+ per company
  • Expertise required: Understanding 10-K structure, Exhibit 21, debt footnotes, VIEs
The Solution: DebtStack runs extraction once with rigorous QA, then serves pre-computed data via fast API.

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Current Database

211 companies covering S&P 100 and NASDAQ 100, with thousands of debt instruments, real-time bond pricing, and searchable SEC filing sections. Expanding to 500+ companies.

Structured Data

211 companies with debt instruments, covenants, guarantees, collateral, and full-text search across indentures, credit agreements, and SEC filings

AI-Optimized

Field selection, powerful filters, and consistent JSON responses designed for LLM consumption

Real-Time Pricing

Bond pricing from FINRA TRACE with yield-to-maturity and spread calculations

Document Search

Full-text search across thousands of SEC filing sections including indentures and credit agreements

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Coverage

S&P 100 and NASDAQ 100 companies across all sectors:
SectorSample Companies
TechAAPL, MSFT, NVDA, GOOGL, META, AMZN, TSLA, ORCL, AVGO
FinancialsJPM, GS, BAC, WFC, MS
HealthcareJNJ, UNH, LLY, ABBV, MRK, IDXX, DXCM
ConsumerWMT, COST, HD, MCD, KO, PEP, ORLY
Telecom/CableCHTR, ATUS, TMUS, LUMN
EnergyXOM, CVX, OXY
Offshore DrillingRIG, VAL, DO, NE
AirlinesAAL, UAL, DAL
SemiconductorsNVDA, AMD, AVGO, GFS, CDNS

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Quick Example

Find the highest-leverage company among the MAG7: 
import requests

response = requests.get(
    "https://api.debtstack.ai/v1/companies",
    params={
        "ticker": "AAPL,MSFT,GOOGL,AMZN,NVDA,META,TSLA",
        "fields": "ticker,name,net_leverage_ratio",
        "sort": "-net_leverage_ratio",
        "limit": 1
    },
    headers={"X-API-Key": "ds_xxxxx"}
)

print(response.json())
# {"data": [{"ticker": "TSLA", "name": "Tesla, Inc.", "net_leverage_ratio": 1.8}]}

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11 Core Primitives

DebtStack offers 11 atomic API endpoints optimized for AI agents:
PrimitiveEndpointCostPurpose
Search CompaniesGET /v1/companies$0.05Filter by leverage, sector, 15+ filters
Search BondsGET /v1/bonds$0.05Find by yield, seniority, maturity
Resolve BondGET /v1/bonds/resolve$0.05Map CUSIP/ISIN or free-text to bond
FinancialsGET /v1/financials$0.05Quarterly income, balance, cash flow
CollateralGET /v1/collateral$0.05Collateral securing debt
CovenantsGET /v1/covenants$0.05Search structured covenant data
Compare CovenantsGET /v1/covenants/compareBusinessCompare covenants across companies
Company ChangesGET /v1/companies/{ticker}/changes$0.10Track debt structure changes
Traverse EntitiesPOST /v1/entities/traverse$0.15Follow guarantor chains
Search DocumentsGET /v1/documents/search$0.15Full-text search SEC filings
BatchPOST /v1/batchSumExecute multiple operations

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Data Quality

Estimated data is always flagged. When data cannot be extracted and must be inferred:
  • issue_date_estimated: true - Issue date inferred from maturity date
  • Future estimated fields follow the same pattern

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Data Freshness

DebtStack extracts directly from the latest SEC EDGAR filings, providing 12-18 months fresher data than LLMs like ChatGPT or Gemini.
SourceData PeriodNVDA EBITDA Example
DebtStackNov 2025 (FY2026 Q3)$121B
Gemini/ChatGPTQ1 2025 (knowledge cutoff)$39B

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Integrations

LangChain

Use DebtStack as a tool in your LangChain agents

MCP

Model Context Protocol integration for Claude

REST API

Direct API access with any HTTP client

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Getting Started

1

Create an account

Sign up at debtstack.ai to get your API key
2

Make your first request

Try the quickstart guide to query company data
3

Explore the API

Browse the full API reference for all endpoints
Ready to start? Check out the Quickstart Guide.