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Math & Numbers

Chinese Remainder Theorem Solver (System of Congruences)

Generalized pairwise-merge CRT for 2–20 congruences: coprime moduli give the product modulus, consistent non-coprime moduli give the lcm, inconsistent systems are rejected.

text· Text resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL
curl -X POST 'https://api.elysiatools.com/en/api/tools/chinese-remainder-theorem' \
  -H 'Content-Type: application/json' \
  -d '{"remainders":"2, 3, 2","moduli":"3, 5, 7"}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP
POST https://api.elysiatools.com/en/api/tools/chinese-remainder-theorem

Parameters

NameTypeRequiredDescription
remainderstextYesComma- or space-separated remainders, one per congruence; negative values are reduced mod m.
modulitextYesComma- or space-separated moduli (each m ≥ 2), matching the remainders count.

Response format

Text result

JSON
{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json
{
  "mcpServers": {
    "elysiatools-chinese-remainder-theorem": {
      "name": "chinese-remainder-theorem",
      "description": "Generalized pairwise-merge CRT for 2–20 congruences: coprime moduli give the product modulus, consistent non-coprime moduli give the lcm, inconsistent systems are rejected.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=chinese-remainder-theorem",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call
{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "chinese-remainder-theorem",
    "arguments": {
  "remainders": "2, 3, 2",
  "moduli": "3, 5, 7"
}
  }
}
Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

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