How to use Trading System Blueprinter
Pick your data source, LLM, broker, storage, risk engine, and logger from seven dropdowns. The page emits a Mermaid architecture diagram and a copyable starter file tree so you can see the full stack before writing any code.
What It Does
Use the calculator with intent
Pick your data source, LLM, broker, storage, risk engine, and logger from seven dropdowns. The page emits a Mermaid architecture diagram and a copyable starter file tree so you can see the full stack before writing any code.
Engineers starting a new trading system who want to surface the architectural decisions and risk gates before they write the first line of code.
Interpreting Results
The Mermaid diagram is the discussion artefact — share it in a design review before committing to the stack. The file tree gives the folder structure; use it to bootstrap a repo, then fill in the real implementation.
Input Steps
Field by field
- 1
Pick data source
Pick your data source (e.g., Databento, Alpaca, Polygon). This sets the ingestion layer in the diagram.
- 2
Pick LLM and broker
Choose the LLM for signal generation and the broker for execution (Alpaca, IBKR, Tradier, or paper trading).
- 3
Pick storage, risk, logger
Select storage backend, risk engine (fractional Kelly, vol-target, max-DD kill, or no risk layer), and logger.
- 4
Read the diagram
Read the Mermaid architecture diagram. It reflects your selections and shows how each layer connects.
- 5
Copy the file tree
Copy the starter file tree to your clipboard. It is a scaffold — wire your own tests, secrets management, and observability before pointing it at real capital.
Common Scenarios
Use realistic starting points
Research-only setup
Broker
paper
Data
Polygon
LLM
Sonnet
Diagram shows no live-execution layer; scaffold focuses on data pipeline and signal generation. Paper broker means no real-money flow.
Live-execution setup
Broker
Alpaca
Data
Polygon
LLM
Sonnet
Risk engine
fractional-kelly
The diagram shows a live-execution layer connected to Alpaca. The file tree adds an execution module. Pick a risk engine that matches your sizing logic before pointing at real capital.
Try These Tools
Run the numbers next
Broker API Comparator
Alpaca vs IBKR vs Tradier vs Schwab vs Robinhood — compare auth, rate limits, order types, market data, MCP, and fees before wiring a line of code.
Finance MCP Directory
Security-graded catalog of finance MCP servers — Alpaca, Polygon, Databento, IBKR, Tradier, Tiingo, NautilusTrader. Scope, auth, idempotency, transport.
Data-Vendor TCO Calculator
Compute annual cost of market data across Databento, Polygon, Alpaca, Tiingo, FMP, and Alpha Vantage for your exact universe, bar resolution, and real-time needs.
FAQ
Questions people ask next
The short answers readers usually want after the first pass.
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