Exact arithmetic for AI agents. Two independently written engines (Python exact rational/decimal + a separate C++ evaluator) cross-check every result.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add exact-calc -- uvx exact-calc-mcp~/.codex/config.toml
[mcp_servers.exact-calc]
command = "uvx"
args = ["exact-calc-mcp"]
# codex mcp add exact-calc -- uvx exact-calc-mcp~/.cursor/mcp.json
{
"mcpServers": {
"exact-calc": {
"command": "uvx",
"args": [
"exact-calc-mcp"
]
}
}
}.vscode/mcp.json
{
"servers": {
"exact-calc": {
"type": "stdio",
"command": "uvx",
"args": [
"exact-calc-mcp"
]
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"exact-calc": {
"command": "uvx",
"args": [
"exact-calc-mcp"
]
}
}
}claude_desktop_config.json
{
"mcpServers": {
"exact-calc": {
"command": "uvx",
"args": [
"exact-calc-mcp"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"exact-calc": {
"command": "uvx",
"args": [
"exact-calc-mcp"
]
}
}
}