Kalshi MCP Server

An mcp server that allows AI to operate on the prediction market, Kalshi

- get_tags_for_series_categories

- Calls Kalshi public endpoint:GET /search/tags_by_categories
- No API key required

- Calls Kalshi private endpoint:GET /portfolio/balance
- Requires API key authentication (KALSHI_API_KEY_ID+KALSHI_API_KEY_PATH)

- Calls Kalshi private endpoint:GET /portfolio/subaccounts/balances
- Requires API key authentication (KALSHI_API_KEY_ID+KALSHI_API_KEY_PATH)

- Calls Kalshi private endpoint:POST /portfolio/subaccounts
- No arguments
- Creates a new subaccount (maximum 32 per user)
- Returns:subaccount_number(int, 1-32)
- Requires API key authentication (KALSHI_API_KEY_ID+KALSHI_API_KEY_PATH)

- Calls Kalshi private endpoint:GET /portfolio/orders
- Optional arguments:

- ticker(string; market ticker)
- event_ticker(string; comma-separated event tickers, maximum 10)
- status(string: resting|canceled|executed)
- min_ts/max_ts(int; unix seconds)
- limit(int, 1-200)
- cursor(string)
- subaccount(int, 0-32)

- Calls Kalshi private endpoint:GET /portfolio/orders/{order_id}
- Required arguments:

- order_id(string; the order identifier)

- Calls Kalshi private endpoint:POST /portfolio/orders
- Required arguments:

- ticker(string; market ticker)
- side(string: yes|no)
- action(string: buy|sell)

- client_order_id(string; caller-specified order ID)
- count(int, >=1; contract quantity)
- count_fp(string; fixed-point contract count)
- yes_price(int, 1-99; price in cents)
- no_price(int, 1-99; price in cents)
- yes_price_dollars(string; yes price in dollars)
- no_price_dollars(string; no price in dollars)
- expiration_ts(int; unix timestamp for order expiry)
- time_in_force(string: fill_or_kill|good_till_canceled|immediate_or_cancel)
- buy_max_cost(int; maximum cost in cents)
- sell_position_floor(int; deprecated, only0allowed if set)
- post_only(boolean)
- reduce_only(boolean)
- self_trade_prevention_type(string: taker_at_cross|maker)
- order_group_id(string)
- cancel_order_on_pause(boolean)
- subaccount(int, 0-32)

- Calls Kalshi private endpoint:DELETE /portfolio/orders/{order_id}
- Required arguments:

- order_id(string; the order identifier)

- Calls Kalshi private endpoint:GET /portfolio/positions
- Optional arguments:

- cursor(string)
- limit(int, 1-1000; defaults to 100)
- count_filter(string; comma-separated frompositionand/ortotal_traded)
- ticker(string; market ticker)
- event_ticker(string; comma-separated event tickers, maximum 10)
- subaccount(int, 0-32)

- Calls Kalshi public endpoint:GET /search/tags_by_categories
- Returns only the category names
- No API key required

- Calls Kalshi public endpoint:GET /search/tags_by_categories
- Requires one argument:category(exact category name)
- Returns tags for the selected category
- No API key required

- Calls Kalshi public endpoint:GET /series
- Optional arguments:

- category(string)
- tags(string)
- cursor(string)
- limit(int, 1-1000)
- include_product_metadata(boolean)
- include_volume(boolean)

- Pages Kalshi public endpoint:GET /series
- Required arguments:

- category(string)

- tags(string)
- limit(int, 1-1000; defaults to 1000)
- max_pages(int, 1-10000; defaults to 1000)

- Calls Kalshi public endpoint:GET /markets
- Optional arguments:

- cursor(string)
- limit(int, 1-1000)
- status(string; Kalshi docs list values like unopened|open|paused|closed|settled)
- tickers(string; comma-separated market tickers)
- event_ticker(string; comma-separated event tickers)
- series_ticker(string)
- mve_filter(string: only|exclude)
- min_created_ts/max_created_ts(int; unix seconds)
- min_updated_ts(int; unix seconds)
- min_close_ts/max_close_ts(int; unix seconds)
- min_settled_ts/max_settled_ts(int; unix seconds)

- Pages Kalshi public endpoint:GET /markets
- Required arguments:

- series_ticker(string)

- limit(int, 1-1000; defaults to 1000)
- max_pages(int, 1-10000; defaults to 1000)

- Pages Kalshi public endpoint:GET /markets
- Required arguments:

- series_ticker(string)

- limit(int, 1-1000; defaults to 1000)
- max_pages(int, 1-10000; defaults to 1000)

- KALSHI_API_BASE_URL

- Default:https://api.elections.kalshi.com/trade-api/v2

- Required for authenticated/private endpoints (for exampleget_balance)

- Required for authenticated/private endpoints
- Path to your Kalshi API private key PEM file

- load_settings()reads a local.envfile from the repo root and loads variables when they are not already set in the environment

- Command (installed/editable):

- python3 -m pip install -e .
- python3 -m kalshi_mcp.server

- PYTHONPATH=src python3 -m kalshi_mcp.server

- JSON-RPC 2.0 over newline-delimited JSON on stdin/stdout

- Run unit tests (unittest):

- python3 -m unittest discover -s tests -p 'test_*.py'

- Install dev deps:python3 -m pip install -r requirements-dev.txt
- Then:python3 -m pytest -q

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