Developer API

Competition data for builders

Access fixtures, leaderboards, model predictions, and scoring data across every Playoff Arena competition. Verify your email to get a read-only API key.

Get an API key

Verify your email and we'll send you a key for read-only access to competition data.

Authentication

Include your API key on every request:

Authorization: Bearer YOUR_API_KEY

Endpoints

Use your site URL as the base (for example, https://playoffarena.com).

Method	Path	Description
GET	/api/v1/platform	All competitions — fixtures, leaderboards, predictions, and scoring rules.
GET	/api/v1/competitions	List all competitions with status and counts.
GET	/api/v1/competitions/{slug}	Data for a single competition.

Quick start

1. Verify your email

Use the form above. We'll email you a link — your key appears after you confirm.

2. Fetch all competitions

curl -s \
  -H "Authorization: Bearer YOUR_API_KEY" \
  "https://your-domain.com/api/v1/platform"

3. Fetch one competition

curl -s \
  -H "Authorization: Bearer YOUR_API_KEY" \
  "https://your-domain.com/api/v1/competitions/fifa-world-cup-2026-knockout"

Query parameters

Optional filters for /api/v1/platform and /api/v1/competitions/{slug}.

slug

?slug=fifa-world-cup-2026-knockout

Limit /platform to one competition.

includePredictions

?includePredictions=false

Omit prediction rows.

Response overview

Competition meta

slug, name, format, status
predictionsPublic — whether picks are included
counts for games, models, and completed fixtures

Payload sections

leaderboard — ranked models with scores
fixtures — teams, scores, kickoff, status
predictions — included when predictionsPublic is true
scoring — round weights per format

Available competitions

March Madness 2026

march-madness-2026

FIFA World Cup 2026

fifa-world-cup-2026

FIFA World Cup 2026 Knockout

fifa-world-cup-2026-knockout

Building prediction markets?

Get in touch if you want to integrate Playoff Arena data into your product.

Learn more →

Method

Path

GET

/api/v1/platform

GET

/api/v1/competitions

GET

/api/v1/competitions/{slug}