Abacus
Verified IntegrationClient Configuration
— Connect Abacus to Claude Desktop or Cursor in seconds{
"mcpServers": {
"abacus": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/server-abacus"
],
"env": {}
}
}
}~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).System Overview
Performs type-faithful numerical calculations, offering fixed-point, IEEE-754, and exact rational arithmetic with precision labels for AI models.
7/21/2026
Open Source
stdio / SSE RPC
Frequently Asked Questions
Architecture and operational details for Abacus
Abacus ensures precision by performing calculations using the exact semantics of the chosen numeric type. Every result is delivered with a clear precision verdict (e.g., 'exact' or 'inexact, rounded'), eliminating ambiguity and preventing AI models from misinterpreting rounded or overflowed values.
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