Backslate connects Claude to the live NFL board — every price at every book — and to projections we build independently of the books. Ask what's mispriced tonight. Get the book and the number back.
Basic $7/mo or Premium $19.99/mo after the trial. Three free questions a month before you subscribe.
Demo conversation built from real tool results: a member asks Claude a betting question, a Backslate tool runs, and Claude answers with the book, the price, and the sample size attached.
How it works
An email and a password. Your private connector URL is waiting in the portal the moment you're in.
claude.ai → Settings → Connectors → Add custom connector. The same URL works in Claude Desktop and Claude Code.
“What are the biggest edges tonight?” Claude calls the board, and answers with the book and the number attached.
Thirteen tools
You don't call these. You ask a question, and Claude picks the right one. Nine come with Basic; the four marked Premium are the research desk.
What's on, and where it's cheapest.
get_boardUpcoming games with the consensus spread, total, moneyline, and vig-free win probability.
line_shopThe best price across every book for one game, per side.
Our projection against the market.
prop_edgesA league-wide scan of the biggest gaps between our projection and the posted line.
prop_valueOur projection versus the line for one named player.
What's happened, with the sample size.
team_historyATS and over/under record on closing lines, split home/away, favorite/dog, or primetime.
prop_historyPREMIUMA player's game log and how often he's cleared a number.
matchup_defensePREMIUMYards and touchdowns a defense gives up to a position.
injury_reportWho's dinged up on the slate, by team or status.
Where the money went.
line_movementPREMIUMOpen versus current for one game.
movement_boardPREMIUMThe biggest movers on the board tonight.
The arithmetic, done right.
parlay_oddsTrue odds and payout for a parlay, from the legs.
round_robinEvery combination in a round robin, priced.
stake_sizeKelly sizing from your win probability, the odds, and your bankroll.
Where the numbers come from
We build them independently of the sportsbooks. An edge is the gap between our number and the market, and it is a model's opinion, not a guarantee. Claude is told that too.
Team and player records come from roughly one season of graded games. When the count is six, you see six. When a player is questionable, the flag rides along with the number.
Backslate is an instrument your Claude can read. It never places a bet, never says it's certain, and never invents a price a tool didn't return.
Pricing
Card up front, nothing charged for 7 days, cancel anytime from your portal. Every account also gets three free questions a month before subscribing.
7-day free trial, then $7/mo. Cancel anytime.
7-day free trial, then $19.99/mo. Cancel anytime.
Also on Backslate
A lineup optimizer and a backtester that replays your strategy inside 482,634 archived DraftKings contests, scored on what actually happened, rake included. It lives in the same portal under DFS tools.
Open the DFS toolsQuestions
A Claude plan that supports custom connectors (claude.ai Pro, Max, Team, or Enterprise) and a Backslate account. You paste one private URL into Claude's connector settings; there's nothing to install.
Yes. Anything that can add a remote MCP connector can use your Backslate URL, and the same URL works everywhere you're signed in to Claude.
Before you subscribe, you can ask up to 3 questions a month with the Basic tool set. A question is a burst of tool calls within 90 seconds, so a follow-up that runs two more tools still counts as one. After that, start a trial.
Prices are stored snapshots from eleven sportsbooks, updated through the week. Projections are ours: built independently of the books, which is the whole point. An edge is the gap between our number and the market, and it is an opinion, not a promise.
Basic has the board, best prices, the value scan, projections for any player, team ATS and over/under history, the injury report, and the bet math. Premium adds the research desk: player game logs and hit-rates, defense-vs-position matchups, line movement, and the steam board.
Any time, from the portal. Cancel during the 7-day trial and you're never charged. Cancel later and you keep access until the end of the period you've paid for.
No. Backslate is an instrument your Claude can read. It never places bets, never guarantees a result, and shows the sample size behind every history it quotes.
One URL puts the board, the books, and an independent second opinion inside the Claude you already use.