QuantOracle

About QuantOracle

QuantOracle is a free toolkit of quant finance calculators and a deterministic API for AI agents. Built because LLMs hallucinating math is a real problem in finance, and the fix — grounded tools — was missing for the things quant practitioners actually need.

What this is

Two surfaces, one engine:

  • Interactive calculators at quantoracle.dev — 15 free, no-signup quant finance tools covering Black-Scholes pricing, Kelly Criterion, Monte Carlo simulation, Sharpe / Sortino / Calmar / VaR / CVaR risk metrics, Hurst exponent, drawdown analysis, crypto liquidation, impermanent loss, and more. All client-side input, all server-side math.
  • HTTP API at api.quantoracle.dev — 73 deterministic endpoints (63 calculators + 10 paid composites). Free tier 1,000 calls/IP/day, no API key. Paid composites via x402 micropayments on Base or Solana. Same math powers both surfaces.

Why this exists

Three observations motivated the project:

  1. LLMs do quant finance math wrong. GPT-4o's Black-Scholes Greeks drift 5-30% depending on moneyness. Kelly fractions get flipped. Sharpe annualization gets confused with arithmetic averaging. The agent can't tell. For consequential financial decisions, this is unacceptable.
  2. Existing tools weren't agent-shaped. Most quant calculators are websites for humans or libraries for Python notebooks. Few are wired up as deterministic tool-call surfaces that agents can pick up via LangChain / AgentKit / MCP. Almost none support x402 micropayments for paid composites.
  3. Verification was missing. A "quant API" that hasn't been tested against textbook values is just code. QuantOracle ships with 120 accuracy benchmarks verifying every endpoint against published reference values (Hull, Lopez de Prado, Kelly 1956, Parkinson 1980, RiskMetrics, etc.). When the math is wrong, the test fails.

What makes QuantOracle different

From a quant practitioner's perspective:

  • Deterministic. Same inputs → same outputs. Every time. No model variability, no temperature sampling, no token drift.
  • Verified. Every endpoint is tested against published-textbook values. The benchmark suite is public; you can rerun it.
  • Free for humans, paid for agents at volume. The free tier covers effectively all retail and most agent use. Paid composites exist for agents that need bundled multi-step computation. Wallet-native payment, no signup.
  • Multi-surface. Same math available via website, REST API, MCP server, LangChain Python toolkit, and Coinbase AgentKit action provider. Pick the integration that matches your stack.

Who maintains this

QuantOracle is built and maintained by a small independent team of practitioners. We keep individual identities private at the project level — the work speaks for itself, and the open-source codebase + verification suite means you don't have to take any individual's word for the math. Verify it yourself; everything is auditable.

If you'd like to contact us for a partnership, sponsorship, or enterprise inquiry, the channels are at /contact.

Open source

The entire QuantOracle stack is open source under the MIT license at github.com/QuantOracledev/quantoracle. That includes:

  • The FastAPI backend implementing all 73 endpoints
  • The Next.js frontend rendering the calculator pages
  • The 120-test accuracy benchmark suite
  • The LangChain Python toolkit (also on PyPI as langchain-quantoracle)
  • The MCP server (on npm as quantoracle-mcp)
  • The Coinbase AgentKit action provider
  • Example agents, integration docs, comparison articles

If you find a bug in the math, the API, or the calculators — file an issue. Fixes typically ship the same day.

What's on the roadmap

Things we're actively working on or considering:

  • More calculators (the highest-traffic quant queries we don't cover yet)
  • More comparison articles (1-2 per week)
  • More language bindings (currently TypeScript and Python; thinking about Rust)
  • A premium tier with bulk discounts on paid composites + priority API access (later in 2026)
  • Educational content (videos, deep-dive articles on specific topics)

Specific requests for new calculators or endpoints: open an issue with the use case and we'll evaluate.

How to support QuantOracle

If you find the toolkit useful:

  • Star the GitHub repo. Star counts factor into discoverability across the ecosystem (npm, MCP registries, awesome-lists).
  • Share the comparison articles. The /compare pieces rank better when they get linked from other sites or social posts.
  • Follow on dev.to. @quantoracle — we publish long-form tutorials and integration patterns there.
  • Click through the sponsored links on calculator pages if you're going to sign up for those services anyway. Full disclosure at /affiliate-disclosure.
  • Tell people. Word of mouth is how indie projects survive.