PNL Toolkit MCP Server

by pnltoolkit Your server? Claim it

answering

PNL Toolkit is answering right now. Last checked 4 min ago. It exposes 8 tools.

Eight free investment and trading calculators with PNG charts and editable result links.

Uptime history 9 days of history · worst day 99%

9 days agonow

98.9%

Uptime 24h

90 of 91 checks

Tools

read from the server

610 ms

Response time

average over 24h

open, no key

Access

streamable-http

PNL Toolkit missed one check this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 4 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add calculators --transport http https://pnltoolkit.com/mcp

Settings → Connectors → Add custom connector, then paste this address

https://pnltoolkit.com/mcp

~/.codex/config.toml

[mcp_servers.calculators]
url = "https://pnltoolkit.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "calculators": {
      "url": "https://pnltoolkit.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "calculators": {
      "type": "http",
      "url": "https://pnltoolkit.com/mcp"
    }
  }
}

Available tools 8

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

compound

compound_interest

Compound interest in USD: initial dollars, monthly dollars, annual return/fees/inflation in percent, and whole years. Creates a free calc-compound PNG. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.

dca

dca_backtest

Dollar-cost-averaging backtest using installed monthly closes, not live quotes. Asset ticker, start/end months YYYY-MM, initial deposit in USD, monthly in USD per purchase, frequency in months (1, 3 or 12), buying fee in percent, optional benchmark and total/price return basis. Initial deposit and first recurring purchase occur at the selected start month-end. Omitted dates use calculator defaults clamped to coverage. Returns data metadata and the free calc-dca PNG. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.

drawdown

drawdown_recovery

Drawdown recovery: balances/deposits in USD, drawdown and monthly return in percent, target horizon in whole months. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.

historical

historical_return

Historical investment return using installed monthly closes, not live quotes. Asset ticker, start/end months YYYY-MM, amount in USD (unit=cash) or historical shares/coins (unit=coins), buying fee in percent, optional benchmark and total/price return basis. Omitted dates use calculator defaults clamped to asset/benchmark coverage. Returns data coverage/source metadata and the free calc-return PNG. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.

inventory

inventory_quotes

Inventory quotes: mid and tick in USD, inventory weights in percent, spread/skew/cap in basis points. Skew is bps per 10 percentage points of inventory deviation. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.

position

position_size

Position sizing for linear USD shares/coins: prices in USD, account risk in percent, fees/slippage in basis points, quantity increment in units. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.

spread

spread_and_fees

Round-trip spread economics: one-side notional in USD; full spread, fee per fill and adverse cost in basis points (1 bp = 0.01%). Negative fees are rebates. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.

trade

trade_expectancy

Trade expectancy and fractional Kelly: balance in USD, win rate/buffer/cap in percent, wins/losses/cost in R, fraction 0–1. Returns results, conditions, assumptions, an editable link, share page and PNG. No account access or order execution.

Endpoints

URL	Transport	State	Latency	Checked
https://pnltoolkit.com/mcp	streamable-http	answering	418 ms	4 min ago

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PNL Toolkit — questions

Answers built from our own checks of this server.

What can PNL Toolkit do?

It exposes 8 tools, read directly from the server on our last check. Among them: compound_interest, dca_backtest, drawdown_recovery, historical_return, inventory_quotes, position_size and 2 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is PNL Toolkit working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 90 of 91 checks got a reply (98.9%), average response time 610 ms. The bar chart above shows every period we have measured.

How do I connect PNL Toolkit?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does PNL Toolkit need an API key?

No. PNL Toolkit completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 8 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is PNL Toolkit?

It answers our handshake in 610 ms on average, which is faster than 20% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.