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Epic Games website screenshot

Epic Games

Epic Games operates the Epic Games Store digital storefront and the Epic Online Services (EOS) platform, providing developers with cross-platform game services. Epic Online Services is a free SDK based on Fortnite's backend infrastructure, supporting matchmaking, friends, leaderboards, achievements, voice chat, anti-cheat, and player data storage across Windows, macOS, PlayStation, Xbox, Nintendo Switch, iOS, and Android. The Epic Account Services and EOS Web APIs deliver authentication, account management, ecommerce, and analytics for games published on the Epic Games Store and other platforms.

agent aware

Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.

Kin Score

API Evangelist profiles Epic Games the way a machine reads it — 15 machine-readable artifacts across 10 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Epic Games scores 35.6/100 (thin), with a separate agent-readiness read of 16/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 35.6/100 · thin
Contract Quality 0.0 / 25
Developer Ergonomics 8.7 / 20
Commercial Clarity 12.1 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 16/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3

How we profile Epic Games

Each block below is one kind of artifact we hold for Epic Games. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 10

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

Individual APIs this provider publishes, each with its own machine-readable definition.

Epic Account Services API

Epic Account Services (EAS) provides authentication and identity for players using Epic Games accounts. Supports OAuth 2.0 authorization code, device, and exchange code flows, a...

Epic Online Services Achievements API

The EOS Achievements API enables developers to define, unlock, and query player achievements across platforms. Supports definitions, player progress, and unlocking via the EOS S...

Epic Online Services Leaderboards API

The EOS Leaderboards API provides global and per-friend leaderboards backed by player stats. Developers configure leaderboards in the developer portal and query rankings via the...

Epic Online Services Stats API

The EOS Stats API tracks player statistics over time, providing the data source that powers leaderboards and achievements. Supports ingest, increment, and query operations on st...

Epic Online Services Friends API

The EOS Friends API exposes a player's Epic Games friends list, allowing games to surface social presence, invitations, and party formation across platforms.

Epic Online Services Ecom API

The EOS Ecom (Ecommerce) Interface API exposes the player's Epic Games Store entitlements, ownership, catalog offers, and checkout flows. Used by titles published on the Epic Ga...

Epic Online Services Lobby and Sessions API

The EOS Lobby and Sessions APIs provide matchmaking primitives for multiplayer games, including lobby creation, joining, attribute filtering, and dedicated session management.

Epic Online Services Player Data Storage API

The EOS Player Data Storage and Title Storage APIs persist per-player save data and shared title-level configuration in the cloud, with cross-platform availability and versioning.

Epic Online Services Anti-Cheat API

Easy Anti-Cheat (EAC) integrated into Epic Online Services provides kernel and user-mode anti-cheat protections, server-side validation, and reporting tooling for cross-platform...

Epic Online Services Voice API

The EOS Voice Interface delivers in-game voice chat using Vivox backend infrastructure, with positional audio, room management, and moderation controls across platforms.

Scroll within the panel for all 10 ·

Pricing Plans 1

Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.

Published pricing tiers and plan structures.

Epic Plans Pricing

3 plans

PLANS

Rate Limits 1

Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.

Documented rate limits and quota policies.

Epic Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.

Cost, billing, and metering signals for API financial operations.

Epic Finops

FINOPS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Epic Domain Security

TLSv1.3 · DMARC

SECURITY

Epic Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Resources

Every other property we hold for Epic Games — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Get Started 2

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Build 1

SDKs, sample code, and the tooling you integrate with

Operate 1

Status, limits, changes, and where to get help

Commercial 2

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Other 1

Properties that don't map to a standard resource type

← All providers · Data indexed from github.com/api-evangelist/epic · machine-readable index on apis.io