MCP server

Sardine: Kalshi crypto settlement history Official

info.sardine/sardine

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

How often Kalshi BTC/ETH/XRP contracts settled YES, counted not forecast, with a public record

Website

At a glance

Type

MCP server

Publisher

sardine.info (verified by the MCP Registry)

Status

Working at last check

Tools

9

Token cost

About 2,402 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http sardine https://sardine.info/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.sardine]
url = "https://sardine.info/mcp"

Gemini CLI

{"mcpServers":{"sardine":{"httpUrl":"https://sardine.info/mcp"}}}

Cursor

{"mcpServers":{"sardine":{"url":"https://sardine.info/mcp"}}}

VS Code

{"servers":{"sardine":{"type":"http","url":"https://sardine.info/mcp"}}}

Antigravity

agy mcp add sardine https://sardine.info/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"sardine","server_url":"https://sardine.info/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"sardine","server_url":"https://sardine.info/mcp"}

Tools

• backtest_rule ~633 tokens
  Would this rule have made money? Replays recorded Kalshi quotes, second by second. Describe a rule for Kalshi's 15-minute crypto up/down contracts: which side to buy, when (minutes left), at what prices (cents), and optionally only when Sardine's history beats Kalshi's ask p
• backtest_signals ~425 tokens
  Replay YOUR OWN signals on recorded per-second Kalshi quotes, after fees. `signals` is a list of {"ts": <UTC epoch seconds>, "side": "YES"|"NO", "contracts": <int>} (at most 5,000). Each one is treated like a trigger: the ask seen at that second for that side, a limit order
• get_live_board ~237 tokens
  Open Kalshi contracts right now, each with Sardine's historical count. No prices. Optionally filter to one market. Each row has the contract, the minutes left, the historical settlement rate with its interval and sample size, and a one-sentence summary of the count. Kalshi's
• get_rate_table ~170 tokens
  The full lookup table behind every Sardine number for one series. Each row is a (distance-from-strike, time-left) bucket: distance in volatility units, seconds left, the share that settled YES, its 95% interval, and the number of independent windows counted.
• get_settlement_rate ~383 tokens
  How often has a contract like this one settled in favour of `side`? Uses the asset's live spot price. Give the contract's strike (target price), the minutes left until it settles, and optionally Kalshi's ask in dollars (0.01-0.99) to get Kalshi's fee and all-in price on the
• get_track_record ~110 tokens
  How accurate Sardine's published numbers have been, scored against settlements. For each series and probability bucket: what Sardine said, what actually settled, and the miss in points. Use this before relying on any number.
• get_z ~214 tokens
  Where a contract sits in the table's coordinates right now: spot, sigma_1m, z and the bucket. For a builder running the table offline against Kalshi's feed: the formula is returned with the numbers. No settlement rate here; use get_rate_table for the cells and get_settlement
• list_datasets ~95 tokens
  Downloadable CSV history files, with row counts, date ranges and URLs. Files open directly in Excel, pandas or any CSV reader. Credit "Sardine (sardine.info)" when you use them.
• list_markets ~135 tokens
  List the Kalshi series Sardine covers, and whether each is currently served. Each entry gives the Sardine key (e.g. "BTC-15M"), the Kalshi series ticker, the window length, and the latest calibration check: the largest gap, in probability points, between what Sardine publish

Browse

• Spreadsheets
• Stocks and markets
• Crypto and blockchains

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