Flatland runs on your own machine — the client starts it, so there is no endpoint to ping. 68 installs a week from npm.
Financial reasoning infrastructure for AI agents: typed models, deterministic compilation, receipts
Today is the operative word: we check Flatland every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add flatland -e 'FLATLAND_API_KEY=<FLATLAND_API_KEY>' -- npx -y flatland-client
{
"mcpServers": {
"flatland": {
"command": "npx",
"args": [
"-y",
"flatland-client"
],
"env": {
"FLATLAND_API_KEY": "<FLATLAND_API_KEY>"
}
}
}
}
[mcp_servers.flatland]
command = "npx"
args = ["-y", "flatland-client"]
env = { FLATLAND_API_KEY = "<FLATLAND_API_KEY>" }
{
"mcpServers": {
"flatland": {
"command": "npx",
"args": [
"-y",
"flatland-client"
],
"env": {
"FLATLAND_API_KEY": "<FLATLAND_API_KEY>"
}
}
}
}
{
"servers": {
"flatland": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"flatland-client"
],
"env": {
"FLATLAND_API_KEY": "<FLATLAND_API_KEY>"
}
}
}
}
Put your own value in place of
<FLATLAND_API_KEY> (Your Flatland API key (fl_live_...). Get one at https://flatlandfi.com/install).
The author’s registry entry marks it as required.
Deterministic signed verification of numeric & financial claims for AI agents & spreadsheets.
Deterministic finance tools for AI agents — IRR, NPV, MOIC, DCF, WACC and sensitivity.
Financial infrastructure for AI agents: wallets, USDC transfers, lending, jobs on Polygon
Deterministic market-state engine for trading agents — state, gate, coordinates, with receipts.
Certainty for AI Agents. Deterministic MCP tools for dates, crypto, finance. 84 tools.
Financial intelligence MCP for AI agents — DCF, ratios, comparisons. Pre-computed signals.
Austria's official company register (Firmenbuch) – master data, financials & ratios for AI agents.
Jordan & GCC labour-law, tax and finance calculators for AI agents — 36 deterministic tools.
Answers built from our own checks of this server.