Limits
The limits on the Vault, designs, searches, CSV imports, AI handoffs and requests, with the numbers taken from the software.
This page lists the limits in AIStrategyMiner. The values are read from the software when this page is built, so they match the current version.
Size and count limits
| Item | Limit | Applies to |
|---|---|---|
| Vault | 10,000 strategies per account | Pro. The server refuses to save more. |
| Blocks in one design | A warning appears at 50 blocks | Strategy Builder. You can keep adding blocks; the warning says performance may degrade. |
| Trials per search | 1,000, 2,000, 5,000, 10,000, 20,000 | Strategy Miner. The choices in the Trial limit list. |
| Search period | 2, 3, 4, 5 years; 8 and 10 years for symbols with long data | Strategy Miner. See Symbols for which symbols have 8 and 10 years. |
| Strategies combined at once | 40 | Pro. Combine strategies on the Vault. |
| Parameters optimized together | 8 | Pro. Optimize parameters. |
| Tries in one optimization | Up to 20,000 | Pro. The Max tries field. |
| Imported CSV: file size | 150 MB | Pro. Larger files are refused. |
| Imported CSV: rows | 4,000,000 | Pro. Files with more rows are refused. |
| Imported CSV: shortest history | 8,000 hourly bars (about 1.5 years) | Pro. Shorter data cannot be split into a search period and a later period. Under 20,000 bars the Miner shows a warning. |
| Imported CSV: saved sets | 20 | Pro. Kept in this browser only. |
| Free demo run | 1,000 trials, 3 candidates, 4 years, minimum 60 trades, 40 seconds | Strategy Miner without Pro. These values are fixed in the demo. |
The Vault keeps up to 10,000 strategies per account.
A design in the Builder shows a warning once it reaches 50 blocks. A design has 119 block types to choose from. See Block reference.
CSV import
You can import price bars from your own CSV file in the Strategy Miner. The file must stay within these limits: 150 MB and 4,000,000 rows. The table above also lists the shortest history and the number of saved sets. The file is read in your browser.
Data kept for AI
Two features keep data for a fixed time so an AI can use it.
| Item | Kept for | Size limit |
|---|---|---|
| A summary handed to an AI | 30 days | 16 KB per summary, up to 20 candidates |
| A Builder link created by an AI | 90 days | 256 KB per design, up to 8 designs per link and 60 blocks per design |
The data is deleted when the time has passed.
Request limits
Some requests to AIStrategyMiner are limited to a number per minute. When you go over a limit, the request is refused with HTTP status 429 and you can try again after a short wait. The limits are counted per account or per IP address, as shown.
| What is limited | Limit | Counted per |
|---|---|---|
| Backtests in the Strategy Builder, including the multi-symbol robustness table | 20 per 60 seconds | Signed-in account |
| Code generation requests from the Strategy Builder | 10 per 60 seconds | Account when signed in, otherwise IP address |
| Code generation requests in the Builder's indicator mode | 20 per 60 seconds | Account when signed in, otherwise IP address |
| Loading template and recipe definitions | 10 per 60 seconds | Account when signed in, otherwise IP address |
| Messages sent through the contact form | 3 per 60 seconds | IP address |
| All requests to the MCP endpoint (/mcp) | 60 per 60 seconds | IP address |
| Opening a Builder link that an AI created | 30 per 60 seconds | IP address |
| Handing results to an AI: saving and deleting a summary (account) and reading it through MCP (IP address) | 20 per 60 seconds | Account for saving and deleting, IP address for reading |