Free tools
MCP connector: odds tools for AI assistants
The arithmetic of our free calculators, and our public list of recent confirmed surebets, as tools an AI assistant can call through the Model Context Protocol. Read-only. No account, no key.
Connect it
Add a custom connector (remote MCP server) in your assistant and give it this address. It needs no sign-in.
https://arbistoteles.com/mcp
Transport: Streamable HTTP, stateless (JSON-RPC over POST). Tools only: no resources, no prompts.
The four tools
| Tool | What it does | Input | Output |
|---|---|---|---|
| check_surebet | Says whether the best odds for every outcome of one event form a surebet, and splits a total stake so every outcome pays the same. | odds: 2 or 3 decimal odds. total_stake: optional, default 100. | is_surebet, the sum of 1/odds, margin, the stake per outcome, the payout. |
| remove_vig | Takes one bookmaker's odds for every outcome of a market and returns its margin and the fair probability and fair odds of each outcome. | odds: 2 to 10 decimal odds. | overround, and per outcome the fair probability and fair odds. |
| convert_odds | Converts one price between decimal, American, fractional and implied probability. | value: the price as written. format: decimal, american, fractional or implied_percent. | The same price in all four formats. |
| list_recent_surebets | Lists surebets our scanners confirmed in the last 72 hours: event, market, both legs with odds, margin and the time confirmed. Past data, not a live feed. | sport, min_margin, limit: all optional. | The window, how many were confirmed in it, and up to 50 rows. |
Every tool is read-only and says so in its annotations. A wrong input gets a message that says what to send instead.
Things to ask
- Is 1.98 and 2.42 on the two sides of a tennis handicap a surebet? Split 200 between them.
- A book has 1.91 / 1.91 on a total. What is its margin and the fair odds?
- Convert -135 American odds to decimal and to an implied probability.
- Show me recent confirmed tennis surebets over 3%.
What it does not do
- It places no bets, moves no money and touches no betting account.
- It does not look up live odds. The list of surebets is past data from our log, refreshed every few days.
- It gives no advice and predicts nothing. A margin only holds if every bet is accepted at those odds and none is voided.
Data
The connector has no accounts and stores nothing you send. It reads one public file of this site and does arithmetic on the numbers in the request. It never asks for conversation history, memory or files. Our privacy policy covers the site as a whole.
Support
Something answers wrong, or you need a tool we don't have? Write to support@arbistoteles.com or ask on Telegram: @arbistoteles_support. The same maths, by hand: the arbitrage betting calculator and the other free tools.
18+ only. Betting involves risk, and whether you may bet at all depends on where you live and on each sportsbook's terms. Arbistoteles is an information service, not a bookmaker.