Finance

Betting Odds Calculator

Convert odds between decimal, fractional, and American formats with implied probability, plus parlay combination odds and no-vig fair-odds calculation.

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Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'http://127.0.0.1:3003/en/api/tools/betting-odds-calculator' \
  -H 'Content-Type: application/json' \
  -d '{"mode":"convert","odds":"+150","format":"auto","stake":100,"legs":"1.80\n2.20\n1.95","market":"1.95\n2.05  (2-way)\nor 2.30 / 3.40 / 3.10  (3-way)","decimals":2}'

API reference

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

Endpoint

HTTP

POST http://127.0.0.1:3003/en/api/tools/betting-odds-calculator

Parameters

Name	Type	Required	Description
mode	select	Yes	—
odds	text	No	—
format	select	Yes	—
stake	number	No	—
legs	textarea	No	—
market	textarea

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-betting-odds-calculator": {
      "name": "betting-odds-calculator",
      "description": "Convert odds between decimal, fractional, and American formats with implied probability, plus parlay combination odds and no-vig fair-odds calculation.",
      "baseUrl": "http://127.0.0.1:3003/mcp/sse?toolId=betting-odds-calculator",
      "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": "betting-odds-calculator",
    "arguments": {
  "mode": "convert",
  "odds": "+150",
  "format": "auto",
  "stake": 100,
  "legs": "1.80\n2.20\n1.95",
  "market": "1.95\n2.05  (2-way)\nor 2.30 / 3.40 / 3.10  (3-way)",
  "decimals": 2
}
  }
}

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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