### PHP: Run quickstart.php

Source: https://parlay-api.com/docs/sdks

Runs the PHP quickstart example after saving it as quickstart.php. Requires the PARLAY_API_KEY environment variable to be set.

```bash
php quickstart.php
```

--------------------------------

### Ruby quickstart: fetch MLB odds with net/http

Source: https://parlay-api.com/docs/sdks

Ruby 3.0+ standalone HTTP reference using net/http and json. Save as quickstart.rb; no gem install needed. Requires the PARLAY_API_KEY environment variable, otherwise it raises an error. Makes a GET request to the baseball MLB odds endpoint and prints the first event as pretty JSON, or a message when no events match.

```ruby
require 'net/http'
require 'json'

key = ENV.fetch('PARLAY_API_KEY')
raise 'Set PARLAY_API_KEY first' if key.strip.empty?
uri = URI('https://parlay-api.com/v1/sports/baseball_mlb/odds?regions=us&markets=h2h')
request = Net::HTTP::Get.new(uri)
request['X-API-Key'] = key
response = Net::HTTP.start(uri.host, uri.port,
  use_ssl: true, open_timeout: 10, read_timeout: 30) do |http|
  http.request(request)
end
unless response.is_a?(Net::HTTPSuccess)
  raise "HTTP #{response.code}: #{response.body}"
end
events = JSON.parse(response.body)
raise 'Expected an event array' unless events.is_a?(Array)
puts(events.empty? ? 'No events match this request right now.' : JSON.pretty_generate(events.first))
```

```bash
ruby quickstart.rb
```

--------------------------------

### GET /v1/event-markets/examples

Source: https://parlay-api.com/docs/swagger

Endpoint to get event market examples.

```APIDOC
## [GET] /v1/event-markets/examples

### Description
Get event market examples.

### Method
GET

### Endpoint
/v1/event-markets/examples

```

--------------------------------

### C#/.NET: Create console project

Source: https://parlay-api.com/docs/sdks

Creates a new .NET console project named parlay-quickstart and changes into its directory. Part of the C#/.NET setup before replacing Program.cs with the example.

```bash
dotnet new console -o parlay-quickstart
cd parlay-quickstart
```

--------------------------------

### Run Rust example with cargo run

Source: https://parlay-api.com/docs/sdks

Builds and runs the Rust project after the main.rs example has been replaced. Executes the first-call example.

```bash
cargo run
```

--------------------------------

### Run quickstart.py

Source: https://parlay-api.com/docs/sdks

Run the quickstart.py example after saving the first call code. Executes the SDK example and prints the first event or a message if no events match.

```bash
python quickstart.py
```

--------------------------------

### Install websockets and run Python stream.py

Source: https://parlay-api.com/docs/websocket/quickstart

Install the 'websockets' package and run the Python WebSocket client. Set the PARLAY_API_KEY environment variable before running.

```bash
pip install websockets
# PARLAY_API_KEY=pk_live_xxxx python stream.py
```

--------------------------------

### Java quickstart: fetch MLB odds with java.net.http

Source: https://parlay-api.com/docs/sdks

Java 17+ standalone HTTP reference using java.net.http. Save as Main.java; no JSON library required. Requires the PARLAY_API_KEY environment variable, otherwise throws an IllegalStateException. Sends a GET request to the baseball MLB odds endpoint and prints the JSON response, or a message when the response is an empty array.

```java
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.time.Duration;

public class Main {
    public static void main(String[] args) throws Exception {
        String key = System.getenv("PARLAY_API_KEY");
        if (key == null || key.isBlank()) {
            throw new IllegalStateException("Set PARLAY_API_KEY first");
        }
        var client = HttpClient.newBuilder()
            .connectTimeout(Duration.ofSeconds(10)).build();
        var request = HttpRequest.newBuilder(URI.create(
            "https://parlay-api.com/v1/sports/baseball_mlb/odds?regions=us&markets=h2h"))
            .header("X-API-Key", key)
            .timeout(Duration.ofSeconds(30)).GET().build();
        var response = client.send(request, HttpResponse.BodyHandlers.ofString());
        if (response.statusCode() != 200) {
            throw new IllegalStateException("HTTP " + response.statusCode() + ": " + response.body());
        }
        String json = response.body().trim();
        System.out.println(json.matches("\\[\\s\\]*")
            ? "No events match this request right now." : json);
    }
}
```

```bash
java Main.java
```

--------------------------------

### Install ws and run Node.js stream.mjs

Source: https://parlay-api.com/docs/websocket/quickstart

Install the 'ws' package and run the Node.js WebSocket client. Set the PARLAY_API_KEY environment variable before running.

```bash
npm install ws
# save the snippet below as stream.mjs, then:
# PARLAY_API_KEY=pk_live_xxxx node stream.mjs
```

--------------------------------

### Fetch MLB odds with ParlayAPI (Python SDK, curl, JavaScript, raw Python)

Source: https://parlay-api.com/docs

Quick start examples for fetching MLB odds from ParlayAPI. The Python SDK example installs the package and creates a client with your API key. The curl, JavaScript, and raw Python examples call the REST endpoint directly with the X-API-Key header. All require a valid API key; the free tier provides 1,000 credits per month.

```python
pip install parlay-api

from parlay_api import ParlayAPI
client = ParlayAPI(api_key="YOUR_KEY")
odds = client.odds("baseball_mlb", regions="us")
```

```bash
curl "https://parlay-api.com/v1/sports/baseball_mlb/odds?regions=us" \
  -H "X-API-Key: YOUR_KEY"
```

```javascript
const r = await fetch(
  "https://parlay-api.com/v1/sports/baseball_mlb/odds?regions=us",
  { headers: { "X-API-Key": "YOUR_KEY" } }
);
const odds = await r.json();
```

```python
import requests
r = requests.get(
    "https://parlay-api.com/v1/sports/baseball_mlb/odds",
    headers={"X-API-Key": "YOUR_KEY"},
    params={"regions": "us"},
)
odds = r.json()
```

--------------------------------

### Install parlay-api Python SDK

Source: https://parlay-api.com/docs/sdks

Install the public Python SDK version 0.3.2. Requires Python 3.10+ and no runtime dependencies.

```bash
python -m pip install parlay-api==0.3.2
```

--------------------------------

### Futures Response Example

Source: https://parlay-api.com/docs/response-shapes

Example of a season-long market selection record. Includes sport_key, season, market_key, selection, and price. Note the absence of commence_time and line because futures do not have a single kickoff or over/under.

```json
[
  {
    "sport_key": "basketball_nba",
    "season": "2025-26",
    "market_key": "nba_championship_winner",
    "market_label": "NBA Championship Winner",
    "selection": "Boston Celtics",
    "source": "draftkings",
    "source_title": "DraftKings",
    "price": +450,
    "implied_prob": 0.1818,
    "snapshot_time": "2026-05-01T18:55:30Z"
  }
]
```

--------------------------------

### X-Provider-State header example

Source: https://parlay-api.com/docs/websocket

Shows the shape of the X-Provider-State header returned with every /v1/* response, including the WebSocket upgrade response. Use it to decide per-request whether to trust a source's rows, route around degraded sources, or weight aggregates by freshness. The full spec is at the Provider State docs; an untruncated payload is also available at GET /v1/meta/provider-state.

```http
X-Provider-State: {"ts":1778739733,"src":{"pinnacle":{"age_s":1.2,"role":"primary"}, "fanduel":{"age_s":12.8,"role":"primary"}, "caesars":{"age_s":null,"role":"offline"}, ...}}
```

--------------------------------

### Sports endpoint response example

Source: https://parlay-api.com/docs

Response for GET /v1/sports. Lists all sport keys with at least one event in the last 24 hours. The `...` indicates additional entries.

```json
[
  {
    "key": "baseball_mlb",
    "group": "Baseball",
    "title": "MLB",
    "description": "Major League Baseball",
    "active": true,
    "has_outrights": false
  },
  ...
]
```

--------------------------------

### GET /

Source: https://parlay-api.com/docs/swagger

Endpoint to retrieve the root page.

```APIDOC
## [GET] /

### Description
Retrieve the root page.

### Method
GET

### Endpoint
/

```

--------------------------------

### GET /v1/sports/{sport_key}/player-ratings with sample JSON response

Source: https://parlay-api.com/docs

Request the market-implied player ratings endpoint for table tennis with a 30-day window and a minimum of 3 matches. The response includes rating metadata, drop counts, and a ratings array; the example shows the JSON response structure with one sample player entry.

```json
GET /v1/sports/table_tennis/player-ratings?window_days=30&min_matches=3&apiKey=...

{
  "sport_key": "table_tennis",
  "rating_kind": "market_implied",
  "rating_basis": "pregame_closing_lines",
  "rating_method": "iterative_elo_from_devigged_pregame_closing_moneylines",
  "window_days": 30,
  "data_window_start": "2026-08-06T06:00:00Z",
  "data_window_end": "2026-09-05T02:05:00Z",
  "min_matches": 3,
  "total_rated_players": 1036,
  "matches_used": 8750,
  "matches_dropped_inplay_only": 17259,
  "matches_dropped_one_sided": 71,
  "matches_dropped_implied_total_out_of_range": 0,
  "matches_priced_by_multiple_books": 168,
  "implied_total_bounds": [0.98, 1.3],
  "source_matches": 8750,
  "ratings": [
    {"player": "Andrew Baggaley", "rating": 1662.8, "matches": 9,
     "implied_win_rate": 0.7092, "last_match_at": "2026-08-21T14:35:00Z"},
    ...
  ]
}
```

--------------------------------

### Events endpoint response example

Source: https://parlay-api.com/docs

Response for GET /v1/sports/{sport_key}/events. Events are deduped by `canonical_event_id` (an MD5 of sport + date + sorted team names) so matchups with different team naming conventions collapse into one event. The `...` indicates additional entries.

```json
[
  {
    "id": "8b1f3a2c0e9d4...",
    "canonical_event_id": "ee78855a3bdd1019",
    "sport_key": "baseball_mlb",
    "sport_title": "MLB",
    "commence_time": "2026-05-01T19:35:00Z",
    "home_team": "New York Yankees",
    "away_team": "Kansas City Royals"
  },
  ...
]
```

--------------------------------

### GET /v1/sports/{sport_key}/live

Source: https://parlay-api.com/docs

Currently in-progress games with grouped book quotes. Sub-10s freshness on our in-play collectors.

```APIDOC
## GET /v1/sports/{sport_key}/live

### Description
Currently in-progress games with grouped book quotes. Sub-10s freshness on our in-play collectors.

### Method
GET

### Endpoint
/v1/sports/{sport_key}/live

```

--------------------------------

### GET /v1/sports/{sport_key}/live/sse

Source: https://parlay-api.com/docs

Persistent SSE connection that pushes each state change within ~50ms of the event. Starter+ tier required.

```APIDOC
## GET /v1/sports/{sport_key}/live/sse

### Description
Persistent SSE connection. Server pushes each state change (point won, game won, set closed, goal, foul, pitch outcome, period change) within ~50ms of the event. Starter+ tier required. Use the standard `EventSource` API.

The connection charge covers the initial snapshot plus streaming. Reconnects are billed as new connections.

### Method
GET

### Endpoint
/v1/sports/{sport_key}/live/sse

### Request Example
```js
// JS
const es = new EventSource('https://parlay-api.com/v1/sports/tennis/live/sse?match_id=...&apiKey=...');
es.addEventListener('initial_state', e => console.log('snap', JSON.parse(e.data)));
es.addEventListener('pbp_event', e => console.log('event', JSON.parse(e.data)));
```

```

--------------------------------

### GET /v1/keys

Source: https://parlay-api.com/docs/swagger

Endpoint to list API keys.

```APIDOC
## [GET] /v1/keys

### Description
List API keys.

### Method
GET

### Endpoint
/v1/keys

```

--------------------------------

### GET /live

Source: https://parlay-api.com/docs/swagger

Endpoint to retrieve the live page.

```APIDOC
## [GET] /live

### Description
Retrieve the live page.

### Method
GET

### Endpoint
/live

```

--------------------------------

### Event-markets search response highlights

Source: https://parlay-api.com/docs

Example response from the event-markets search endpoint. Shows the query, credits charged (0), source summary with counts and max volumes, a market entry with source, event title, outcome, and yes bid/ask prices, and a clusters array with a note that prices are source-native and not blended. The response is a discovery lead, not automatic arb proof; settlement rules must be compared before acting on cross-venue price gaps.

```json
{
  "query": "AJ Brown next team",
  "credits_charged": 0,
  "source_summary": {
    "kalshi": {"count": 10, "max_volume": 283989.29},
    "novig": {"count": 4, "max_volume": 9458.94}
  },
  "markets": [
    {
      "source": "kalshi",
      "event_title": "A.J. Brown's Next Team",
      "outcome": "New England",
      "prices": {"yes_bid": 0.79, "yes_ask": 0.81}
    }
  ],
  "clusters": [
    {
      "cluster_key": "aj brown next team",
      "sources": ["kalshi", "novig"],
      "note": "Candidate text match only. Prices remain source-native and are not blended."
    }
  ]
}
```

--------------------------------

### GET /v1/sports/{sport_key}/live/points

Source: https://parlay-api.com/docs

Returns current state for one match or all in-play matches for the sport. Free tier OK.

```APIDOC
## GET /v1/sports/{sport_key}/live/points

### Description
Returns current state for one match (with `match_id`) or all in-play matches for the sport (omit `match_id`). Free tier OK.

### Method
GET

### Endpoint
/v1/sports/{sport_key}/live/points

### Parameters
#### Query Parameters
- **match_id** (string) - Optional - Single match. Omit for all in-play.

```

--------------------------------

### Python SDK usage with ParlayAPI client

Source: https://parlay-api.com/docs

Install with `pip install parlay-api`. The SDK is a near drop-in replacement for the-odds-api's official Python clients, adding extension methods and built-in devig math helpers. The `devig` and `edge` methods make no network call.

```python
from parlay_api import ParlayAPI

client = ParlayAPI(api_key="YOUR_KEY")

# TOA-compatible methods
sports = client.sports()
events = client.events("baseball_mlb")
odds = client.odds("baseball_mlb", regions="us", markets=["h2h", "spreads"])
historical = client.historical_odds("baseball_mlb", date="2024-10-15")

# Extensions
props = client.props("baseball_mlb", markets=["player_total_bases"])
arbs = client.arbitrage("baseball_mlb", limit=20)
consensus = client.consensus("baseball_mlb")

# Devig math (no network call)
fair_over, fair_under = ParlayAPI.devig(over_price=-110, under_price=-110)
edge_pct = ParlayAPI.edge(book_price=-105, fair_prob=fair_over)

# WebSocket URL builder
ws_url = client.websocket_url("baseball_mlb")
```

--------------------------------

### Query odds for baseball_mlb with regions, markets, and bookmakers (Python and curl)

Source: https://parlay-api.com/docs

Shows the Python client and curl request for the same odds query. Both target baseball_mlb with regions=us, markets h2h/spreads/totals, and bookmakers draftkings/fanduel/pinnacle. The Python example uses the client.odds method with list arguments; the curl example passes comma-separated values and requires an X-API-Key header.

```python
odds = client.odds(
    "baseball_mlb",
    regions="us",
    markets=["h2h", "spreads", "totals"],
    bookmakers=["draftkings", "fanduel", "pinnacle"],
)

```

```bash
curl "https://parlay-api.com/v1/sports/baseball_mlb/odds?regions=us&markets=h2h,spreads,totals&bookmakers=draftkings,fanduel,pinnacle" \
  -H "X-API-Key: YOUR_KEY"

```

--------------------------------

### GET /v1/sports/{sport_key}/live/period_markets

Source: https://parlay-api.com/docs

In-game spreads, totals, and h2h for sub-game periods. Includes alternate lines. Open to all tiers.

```APIDOC
## GET /v1/sports/{sport_key}/live/period_markets

### Description
In-game spreads, totals, and h2h for sub-game periods: 1st half, 2nd half, quarters (NBA, WNBA, NFL, NCAAF), hockey periods (NHL), or first 5 / first 7 innings (MLB). Includes alternate lines: a single Q1 spread query for one NBA game returns ~8 to 10 alt lines. Open to all tiers (Free can run ~500 test calls; continuous high-frequency polling needs Pro or Business). Latency: 1 to 4 seconds (vs 30s+ on the-odds-api).

### Method
GET

### Endpoint
/v1/sports/{sport_key}/live/period_markets

### Parameters
#### Query Parameters
- **period** (string) - Optional - FT, 1H, 2H, Q1, Q2, Q3, Q4, OT, P1, P2, P3, F5, F7, or 'all'
- **match_id** (string) - Optional - Single match
- **source** (string) - Optional - Source book
- **market** (string) - Optional - spread, total, h2h

### Request Example
```
GET /v1/sports/basketball_nba/live/period_markets?period=Q1&market=spread&apiKey=...
```

### Response Example
```json
{
  "sport_key": "basketball_nba",
  "period": "Q1",
  "market": "spread",
  "count": 18,
  "results": [
    {"source":"pinnacle", "home_team":"Oklahoma City Thunder",
     "away_team":"Los Angeles Lakers", "period_key":"Q1",
     "market":"spread", "side":"home", "line":-3.5, "price":-144,
     "age_seconds":1, ...},
    {"source":"pinnacle", "side":"away", "line":3.5, "price":120, ...},
    ...alt lines from -2.5 through -6.0...
  ]
}
```

```

--------------------------------

### GET /v1/sports/{sport_key}/live/period_markets/sources

Source: https://parlay-api.com/docs

Returns which books have which periods active right now (last 10 min). Useful for client-side discovery.

```APIDOC
## GET /v1/sports/{sport_key}/live/period_markets/sources

### Description
Returns which books have which periods active right now (last 10 min). Useful for client-side discovery.

### Method
GET

### Endpoint
/v1/sports/{sport_key}/live/period_markets/sources

```

--------------------------------

### Stream odds updates with ParlayAPI

Source: https://parlay-api.com/docs

Python example using ParlayAPI and websockets to stream odds updates. Requires a valid API key and the parlay_api package.

```python
from parlay_api import ParlayAPI
import asyncio, json
import websockets

async def stream():
    client = ParlayAPI(api_key="YOUR_KEY")
    url = client.websocket_url("baseball_mlb")
    async with websockets.connect(url) as ws:
        async for raw in ws:
            frame = json.loads(raw)
            if frame["type"] == "odds_update":
                for row in frame["data"]:
                    print(row["bookmaker"], row["player"],
                          row["over_price"], row["under_price"])

asyncio.run(stream())
```

--------------------------------

### GET /v1/sports

Source: https://parlay-api.com/docs

List all sport keys with at least one event in the last 24 hours.

```APIDOC
## GET /v1/sports

### Description
List all sport keys with at least one event in the last 24 hours.

### Method
GET

### Endpoint
/v1/sports

### Response
#### Success Response (200)
- **key** (string) - Sport key
- **group** (string) - Sport group
- **title** (string) - Sport title
- **description** (string) - Sport description
- **active** (boolean) - Whether the sport is active
- **has_outrights** (boolean) - Whether the sport has outrights

#### Response Example
```
[
  {
    "key": "baseball_mlb",
    "group": "Baseball",
    "title": "MLB",
    "description": "Major League Baseball",
    "active": true,
    "has_outrights": false
  },
  ...
]
```
```

--------------------------------

### GET /v1/sports/{sport_key}/live/period_markets

Source: https://parlay-api.com/docs

Retrieves period markets for live events, such as first half or first quarter markets. Use the `period` and `market` query parameters to specify the period and market.

```APIDOC
## GET /v1/sports/{sport_key}/live/period_markets

### Description
Retrieves period markets for live events, such as first half or first quarter markets. Use the `period` and `market` query parameters to specify the period and market.

### Method
GET

### Endpoint
/v1/sports/{sport_key}/live/period_markets

### Parameters
#### Path Parameters
- **sport_key** (string) - Required - The sport key.

#### Query Parameters
- **period** (string) - Required - Period key, e.g., `1H` for first half.
- **market** (string) - Required - Market key, e.g., `h2h`.
- **regions** (comma-separated string) - Optional - Regions to include.
- **bookmakers** (comma-separated string) - Optional - Bookmaker keys.
- **oddsFormat** (enum) - Optional - `american` (default) or `decimal`.
- **dateFormat** (enum) - Optional - `iso` (default) or `unix`.

### Request Example
```
curl "https://parlay-api.com/v1/sports/baseball_mlb/live/period_markets?period=1H&market=h2h&regions=us" \
  -H "X-API-Key: YOUR_KEY"
```

### Response
#### Success Response (200)
- **events** (array) - List of events with period markets.
- **event.id** (string) - Event ID.
- **event.bookmakers** (array) - List of bookmakers.
- **bookmaker.markets** (array) - List of markets.
- **market.key** (string) - Market key.
- **market.outcomes** (array) - List of outcomes.

#### Response Example
```json
{
  "events": [
    {
      "id": "event123",
      "bookmakers": [
        {
          "key": "draftkings",
          "markets": [
            {
              "key": "h2h_1st_half",
              "outcomes": [
                {
                  "name": "Team A",
                  "price": -110
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}
```

### Error Handling
- **400 Bad Request** - Invalid parameters.
- **401 Unauthorized** - Missing or invalid API key.
- **404 Not Found** - Sport key not found.
- **429 Too Many Requests** - Rate limit exceeded.
- **500 Internal Server Error** - Server error.
```

--------------------------------

### GET /v1/sports/{sport_key}/events

Source: https://parlay-api.com/docs

List events for a sport. Deduped by canonical_event_id so the same matchup from books with different team naming conventions collapses into one event.

```APIDOC
## GET /v1/sports/{sport_key}/events

### Description
List events for a sport. Deduped by `canonical_event_id` (an MD5 of sport + date + sorted team names) so the same matchup from books with different team naming conventions collapses into one event.

### Method
GET

### Endpoint
/v1/sports/{sport_key}/events

### Parameters
#### Query Parameters
- **commenceTimeFrom** (ISO 8601 string) - Optional - Filter to events starting after this time
- **commenceTimeTo** (ISO 8601 string) - Optional - Filter to events ending before this time
- **dateFormat** (enum) - Optional - `iso` (default) or `unix`

### Response
#### Success Response (200)
- **id** (string) - Event ID
- **canonical_event_id** (string) - Canonical event ID
- **sport_key** (string) - Sport key
- **sport_title** (string) - Sport title
- **commence_time** (string) - Event start time
- **home_team** (string) - Home team name
- **away_team** (string) - Away team name

#### Response Example
```
[
  {
    "id": "8b1f3a2c0e9d4...",
    "canonical_event_id": "ee78855a3bdd1019",
    "sport_key": "baseball_mlb",
    "sport_title": "MLB",
    "commence_time": "2026-05-01T19:35:00Z",
    "home_team": "New York Yankees",
    "away_team": "Kansas City Royals"
  },
  ...
]
```
```

--------------------------------

### GET /v1/markets

Source: https://parlay-api.com/docs

Retrieves metadata about all catalogued markets, including the `served_by` field that indicates which endpoint serves each market.

```APIDOC
## GET /v1/markets

### Description
Retrieves metadata about all catalogued markets, including the `served_by` field that indicates which endpoint serves each market.

### Method
GET

### Endpoint
/v1/markets

### Parameters
None.

### Request Example
```
curl "https://parlay-api.com/v1/markets" \
  -H "X-API-Key: YOUR_KEY"
```

### Response
#### Success Response (200)
- **markets** (array) - List of markets.
- **market.key** (string) - Market key.
- **market.served_by** (string) - Endpoint that serves this market, e.g., `/v1/sports/{sport_key}/odds`.

#### Response Example
```json
{
  "markets": [
    {
      "key": "h2h",
      "served_by": "/v1/sports/{sport_key}/odds"
    }
  ]
}
```

### Error Handling
- **401 Unauthorized** - Missing or invalid API key.
- **429 Too Many Requests** - Rate limit exceeded.
- **500 Internal Server Error** - Server error.
```

--------------------------------

### GET /v1/meta/regions

Source: https://parlay-api.com/docs

Retrieves metadata about regions, including the per-region book lists and book statuses.

```APIDOC
## GET /v1/meta/regions

### Description
Retrieves metadata about regions, including the per-region book lists and book statuses.

### Method
GET

### Endpoint
/v1/meta/regions

### Parameters
None.

### Request Example
```
curl "https://parlay-api.com/v1/meta/regions" \
  -H "X-API-Key: YOUR_KEY"
```

### Response
#### Success Response (200)
- **regions** (array) - List of regions.
- **region.key** (string) - Region key.
- **region.active_books** (array) - Books that have written prices in the last 24 hours.
- **region.books** (array) - All books the region carries, including those with no current prices.
- **book.key** (string) - Bookmaker key.
- **book.status** (string) - Status: `active`, `paused`, `retired`, `not_yet_integrated`.
- **book.last_write_age** (integer) - Age of the last price write in seconds.

#### Response Example
```json
{
  "regions": [
    {
      "key": "us",
      "active_books": ["draftkings", "fanduel"],
      "books": [
        {
          "key": "draftkings",
          "status": "active",
          "last_write_age": 120
        }
      ]
    }
  ]
}
```

### Error Handling
- **401 Unauthorized** - Missing or invalid API key.
- **429 Too Many Requests** - Rate limit exceeded.
- **500 Internal Server Error** - Server error.
```

--------------------------------

### GET /v1/historical/sports/{sport_key}/period_markets

Source: https://parlay-api.com/docs

Retrieves historical period markets for a given sport. Similar to the live period markets endpoint but for historical data.

```APIDOC
## GET /v1/historical/sports/{sport_key}/period_markets

### Description
Retrieves historical period markets for a given sport. Similar to the live period markets endpoint but for historical data.

### Method
GET

### Endpoint
/v1/historical/sports/{sport_key}/period_markets

### Parameters
#### Path Parameters
- **sport_key** (string) - Required - The sport key.

#### Query Parameters
- **period** (string) - Required - Period key, e.g., `1H` for first half.
- **market** (string) - Required - Market key, e.g., `h2h`.
- **regions** (comma-separated string) - Optional - Regions to include.
- **bookmakers** (comma-separated string) - Optional - Bookmaker keys.
- **oddsFormat** (enum) - Optional - `american` (default) or `decimal`.
- **dateFormat** (enum) - Optional - `iso` (default) or `unix`.

### Request Example
```
curl "https://parlay-api.com/v1/historical/sports/baseball_mlb/period_markets?period=1H&market=h2h&regions=us" \
  -H "X-API-Key: YOUR_KEY"
```

### Response
#### Success Response (200)
- **events** (array) - List of events with period markets.
- **event.id** (string) - Event ID.
- **event.bookmakers** (array) - List of bookmakers.
- **bookmaker.markets** (array) - List of markets.
- **market.key** (string) - Market key.
- **market.outcomes** (array) - List of outcomes.

#### Response Example
```json
{
  "events": [
    {
      "id": "event123",
      "bookmakers": [
        {
          "key": "draftkings",
          "markets": [
            {
              "key": "h2h_1st_half",
              "outcomes": [
                {
                  "name": "Team A",
                  "price": -110
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}
```

### Error Handling
- **400 Bad Request** - Invalid parameters.
- **401 Unauthorized** - Missing or invalid API key.
- **404 Not Found** - Sport key not found.
- **429 Too Many Requests** - Rate limit exceeded.
- **500 Internal Server Error** - Server error.
```

--------------------------------

### GET /v1/inplay/arbs

Source: https://parlay-api.com/docs

Cross-book arbs detected during live games. Updated every 5 seconds. Pairs with the WebSocket: subscribers receive `{"type":"arb_flagged"}` frames the moment a new arb is found.

```APIDOC
## GET /v1/inplay/arbs

### Description
Cross-book arbs detected during live games. Updated every 5 seconds. Pairs with the WebSocket: subscribers receive `{"type":"arb_flagged"}` frames the moment a new arb is found.

### Method
GET

### Endpoint
/v1/inplay/arbs

### Response
#### Success Response (200)
- **type** (string) - The type of frame, e.g., "arb_flagged".

#### Response Example
{
  "type": "arb_flagged"
}
```

--------------------------------

### GET /v1/sports/{sport_key}/props

Source: https://parlay-api.com/docs

Retrieves prop markets for a given sport, such as team totals, btts, correct score, double chance, draw no bet, MMA specials, and horse racing keys.

```APIDOC
## GET /v1/sports/{sport_key}/props

### Description
Retrieves prop markets for a given sport, such as team totals, btts, correct score, double chance, draw no bet, MMA specials, and horse racing keys. Use the `markets` query parameter to specify the prop keys.

### Method
GET

### Endpoint
/v1/sports/{sport_key}/props

### Parameters
#### Path Parameters
- **sport_key** (string) - Required - The sport key.

#### Query Parameters
- **markets** (comma-separated string) - Required - Prop market keys, e.g., `team_totals,btts`.
- **regions** (comma-separated string) - Optional - Regions to include.
- **bookmakers** (comma-separated string) - Optional - Bookmaker keys.
- **oddsFormat** (enum) - Optional - `american` (default) or `decimal`.
- **dateFormat** (enum) - Optional - `iso` (default) or `unix`.

### Request Example
```
curl "https://parlay-api.com/v1/sports/baseball_mlb/props?markets=team_totals,btts&regions=us" \
  -H "X-API-Key: YOUR_KEY"
```

### Response
#### Success Response (200)
- **events** (array) - List of events with prop markets.
- **event.id** (string) - Event ID.
- **event.bookmakers** (array) - List of bookmakers.
- **bookmaker.markets** (array) - List of markets.
- **market.key** (string) - Market key.
- **market.outcomes** (array) - List of outcomes.

#### Response Example
```json
{
  "events": [
    {
      "id": "event123",
      "bookmakers": [
        {
          "key": "draftkings",
          "markets": [
            {
              "key": "team_totals",
              "outcomes": [
                {
                  "name": "Over 8.5",
                  "price": -110
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}
```

### Error Handling
- **400 Bad Request** - Invalid parameters.
- **401 Unauthorized** - Missing or invalid API key.
- **404 Not Found** - Sport key not found.
- **429 Too Many Requests** - Rate limit exceeded.
- **500 Internal Server Error** - Server error.
```

--------------------------------

### GET /v1/sports/{sport_key}/live/book_latency

Source: https://parlay-api.com/docs

Per-book lag relative to the primary PBP feed. Returns each book's effective latency in seconds. Pro+ tier.

```APIDOC
## GET /v1/sports/{sport_key}/live/book_latency

### Description
Per-book lag relative to our primary PBP feed. Returns each book's effective latency in seconds. Pro+ tier. Use case: arb scanners check this every few seconds and flag matches where a specific book has stale lines (positive lag > 5s typically means an exploitable window).

### Method
GET

### Endpoint
/v1/sports/{sport_key}/live/book_latency

### Response Example
```json
{
  "sport_key": "baseball_mlb",
  "results": [
    {"match": "Yankees vs Rangers", "book": "fanduel",   "lag_seconds": 7.8, ...},
    {"match": "Yankees vs Rangers", "book": "draftkings","lag_seconds": 1.2, ...},
    {"match": "Yankees vs Rangers", "book": "caesars",   "lag_seconds": 4.0, ...}
  ]
}
```

```

--------------------------------

### SSE heartbeat comment example

Source: https://parlay-api.com/docs/websocket/sse

This is an example SSE comment heartbeat sent every heartbeat_s seconds (default 5) to keep the connection alive. Comments start with ':' and are ignored by spec-compliant SSE parsers, so no client code is needed to handle them.

```text
: heartbeat 1715587205
```

--------------------------------

### GET /v1/sse/hot/{sport_key}

Source: https://parlay-api.com/docs

This endpoint provides a Server-Sent Events (SSE) stream for real-time odds updates. It supports filtering by bookmakers, kinds, markets, and event ID, and includes an initial state frame followed by live updates with a configurable heartbeat.

```APIDOC
## GET /v1/sse/hot/{sport_key}

### Description
EventSource-compatible HTTP stream for enterprise hot paths. It sends a connection frame, source freshness, initial state, then live updates with a 5-second heartbeat.

### Method
GET

### Endpoint
https://parlay-api.com/v1/sse/hot/{sport_key}

### Parameters
#### Path Parameters
- **sport_key** (string) - Required - The sport key, e.g., `baseball_mlb`.

#### Query Parameters
- **apiKey** (string) - Required - Your API key.
- **bookmakers** (string) - Optional - Comma-separated list of bookmaker keys, e.g., `fanduel,pinnacle,caesars`.
- **kinds** (string) - Optional - Comma-separated list of kinds, e.g., `game,prop`.
- **markets** (string) - Optional - Comma-separated list of prop market keys, e.g., `player_points,player_rebounds`.
- **event_id** (string) - Optional - Single event filter, e.g., `2026-05-07_Team_A_Team_B`.
- **heartbeat_s** (integer) - Optional - Heartbeat interval in seconds, 1 to 30, default 5.
- **limit** (integer) - Optional - Rows in the `initial_state` frame, 1 to 1000, default 500.
- **max_age_s** (integer) - Optional - Drop `initial_state` rows older than this, 1 to 3600, default 600.

### Request Example
```
const es = new EventSource(
  "https://parlay-api.com/v1/sse/hot/baseball_mlb?apiKey=YOUR_KEY&bookmakers=fanduel,pinnacle&kinds=game&heartbeat_s=5"
);

es.onmessage = (ev) => {
  const msg = JSON.parse(ev.data);
  if (msg.type === "odds_update") console.log(msg.data);
};
```

### Response
#### Success Response (200)
- **type** (string) - The message type, e.g., `hot_feed_status`, `odds_update`.
- **data** (object) - The message payload.

#### Response Example
```
# Python quickstart
import json, requests

url = "https://parlay-api.com/v1/sse/hot/baseball_mlb"
params = {
    "apiKey": "YOUR_KEY",
    "bookmakers": "fanduel,pinnacle",
    "kinds": "game",
    "heartbeat_s": 5,
}

with requests.get(url, params=params, stream=True, timeout=60) as r:
    r.raise_for_status()
    for line in r.iter_lines(decode_unicode=True):
        if line and line.startswith("data: "):
            msg = json.loads(line[6:])
            if msg["type"] in ("hot_feed_status", "odds_update"):
                print(msg)
```
```

--------------------------------

### GET /v1/sports/{sport_key}/line-movement

Source: https://parlay-api.com/docs

Retrieves time-series price history for one event, grouped into a series per (source, player, market_key, line). Use it for CLV and steam detection.

```APIDOC
## GET /v1/sports/{sport_key}/line-movement

### Description
Time-series price history for one event, grouped into a series per `(source, player, market_key, line)`. Use it for CLV and steam detection.

### Method
GET

### Endpoint
/v1/sports/{sport_key}/line-movement

### Parameters
#### Path Parameters
- **sport_key** (string) - Required - The sport key for the event.

#### Query Parameters
- **eventId** (string) - Required - Accepts the `canonical_event_id` or the `event_id` from a `/props`, `/odds` or `/events` row. `event_id` is an accepted alias.
- **player** (string) - Optional - Partial-match player name. Strongly recommended: it is what keeps a busy event inside the row cap below.
- **market** (string) - Optional - Market key, expanded to its synonym group. `market_key` is an accepted alias.
- **bookmaker** (string) - Optional - Single book. `source` is an accepted alias.
- **hours** (integer) - Optional - Lookback window, default 24. `window_minutes` (1-10080) is an accepted alias.

### Response
#### Success Response (200)
- **series** (array) - A series per `(source, player, market_key, line)`. Each series includes `matched_by`, `home_team`, `away_team`, `over_movement`, `over_price`, `under_price`, `opening_over`, `current_over`, and `line` fields as applicable.
- **X-Line-Movement-Row-Cap** (header) - The row cap value.
- **X-Line-Movement-Truncated** (header) - Set to `1` when the row cap bound.

#### Response Example
{
  "series": [
    {
      "source": "string",
      "player": "string",
      "market_key": "string",
      "line": "number",
      "matched_by": "team" | "player",
      "home_team": "string",
      "away_team": "string",
      "over_movement": "number",
      "over_price": "number",
      "under_price": "number",
      "opening_over": "number",
      "current_over": "number"
    }
  ]
}
```

--------------------------------

### GET /v1/sports/{sport_key}/odds

Source: https://parlay-api.com/docs

Retrieves real-time odds for a given sport from 30+ sources in a single call. Supports regions parameter to filter odds by region.

```APIDOC
## [GET] /v1/sports/{sport_key}/odds

### Description
Retrieves real-time odds for a given sport from 30+ sources in a single call. Supports regions parameter to filter odds by region.

### Method
GET

### Endpoint
https://parlay-api.com/v1/sports/{sport_key}/odds

### Parameters
#### Path Parameters
- **sport_key** (string) - Required - The sport key, e.g., baseball_mlb.

#### Query Parameters
- **regions** (string) - Optional - Comma-separated list of regions, e.g., us.

### Request Example
```
curl "https://parlay-api.com/v1/sports/baseball_mlb/odds?regions=us" \
  -H "X-API-Key: YOUR_KEY"
```

### Response
#### Success Response (200)
Returns odds data in JSON format.

#### Response Example
```json
{
  "odds": []
}
```

```

--------------------------------

### GET /v1/sports/{sport_key}/arbitrage

Source: https://parlay-api.com/docs

Two-leg arbitrage opportunities across books on the same prop, with optimal stake split and projected profit. DFS books excluded. Profit cap 15%.

```APIDOC
## GET /v1/sports/{sport_key}/arbitrage

### Description
Two-leg arbs across books on the same prop, with optimal stake split and projected profit. DFS books excluded. Profit cap 15% (anything higher is almost certainly stale or mis-paired data).

### Method
GET

### Endpoint
/v1/sports/{sport_key}/arbitrage

### Parameters
#### Query Parameters
- **limit** (int) - Optional - Max arbs returned, default 50
- **min_profit_pct** (float) - Optional - Min profit threshold, default 0.5%

```

--------------------------------

### Query period markets for Q1 spread

Source: https://parlay-api.com/docs

Query period markets for a specific period and market. The response includes a count and results with source, teams, period key, market, side, line, price, and age_seconds. The example shows a Q1 spread query for an NBA game returning 18 results with alt lines from -2.5 through -6.0.

```http
GET /v1/sports/basketball_nba/live/period_markets?period=Q1&market=spread&apiKey=...

{
  "sport_key": "basketball_nba",
  "period": "Q1",
  "market": "spread",
  "count": 18,
  "results": [
    {"source":"pinnacle", "home_team":"Oklahoma City Thunder",
     "away_team":"Los Angeles Lakers", "period_key":"Q1",
     "market":"spread", "side":"home", "line":-3.5, "price":-144,
     "age_seconds":1, ...},
    {"source":"pinnacle", "side":"away", "line":3.5, "price":120, ...},
    ...alt lines from -2.5 through -6.0...
  ]
}
```