Heroic Labs

Heroic Labs is the company behind Nakama, a leading open-source game backend server providing a comprehensive REST, WebSocket, and gRPC API for building scalable multiplayer and social games. The platform delivers essential backend services including real-time matchmaking, leaderboards, tournaments, chat, friend systems, and presence tracking. Nakama exposes its functionality via RESTful HTTP endpoints, real-time WebSocket connections, and gRPC, with server runtime support for custom logic in Go, TypeScript, and Lua. Heroic Labs also offers Heroic Cloud as a fully managed deployment platform and Satori as a LiveOps product for feature flags, A/B experiments, and live events.

Heroic Labs publishes 3 APIs on the APIs.io network: Nakama API, Console API, and Rpc API. Tagged areas include Game Backend, Multiplayer, Real-Time, WebSocket, and Matchmaking.

The Heroic Labs catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

Heroic Labs’ developer surface includes authentication, documentation, engineering blog, pricing, API reference, getting-started guide, support, and 39 more developer resources.

🌐 Visit website 📡 Source on GitHub

67.9/100 exemplar ▬ flat Agent 26/100 agent aware open core · Apache-2.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessPaid

4 APIs

Game Backend Multiplayer Real-Time WebSocket Matchmaking Leaderboards Social Gaming Open-Source LiveOps gRPC

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 67.9/100 · exemplar

Contract Quality 12.7 / 20

Developer Ergonomics 12.9 / 16

Access Clarity 13.1 / 16

Operational Transparency 6.0 / 10

Contract Governance 4.1 / 10

Discoverability 6.5 / 8

Open Source Surface 2.5 / 10

Create-or-Update Ergonomics 3.9 / 10

Agent readiness — 26/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 80 points between them, because the conditional facet above carries the other 20. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 80% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/heroiclabs: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 4

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

Nakama API

The Nakama API is the core REST and WebSocket API for Heroic Labs' open-source game backend server. It provides endpoints for user authentication (social, device, email, and cus...

Satori API

The Satori API is Heroic Labs' LiveOps platform API enabling game developers to manage live operations including feature flags, A/B experiments, audiences, and scheduled events ...

Heroic Labs Console API

The Console API from Heroic Labs — 73 operation(s) for console.

Heroic Labs Rpc API

The Rpc API from Heroic Labs — 131 operation(s) for rpc.

Open Collections 4

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Hiro RPC Console API

OPEN COLLECTION

Hiro RPC Console Nakama API

OPEN COLLECTION

Hiro Console Rpc API

OPEN COLLECTION

GraphQL 1

GraphQL schemas published by this provider.

Heroic Labs (Nakama) GraphQL Schema

This document describes a conceptual GraphQL schema for the Heroic Labs Nakama game backend platform. Nakama exposes its functionality natively through REST, WebSocket, and gRPC...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Heroiclabs Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Heroiclabs Rate Limits

6 limits

RATE LIMITS

FinOps 1

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

Heroiclabs Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Heroiclabs Nakama Realtime Events

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Heroiclabs Context

0 classes · 54 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Heroic Labs API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 10

Standalone JSON Schema definitions for this provider's data models.

apiAccount

7 properties

JSON SCHEMA

apiChannelMessage

13 properties

JSON SCHEMA

apiFriend

4 properties

JSON SCHEMA

apiGroup

12 properties

JSON SCHEMA

apiLeaderboardRecord

12 properties

JSON SCHEMA

apiMatch

6 properties

JSON SCHEMA

apiNotification

7 properties

JSON SCHEMA

apiSession

3 properties

JSON SCHEMA

apiStorageObject

9 properties

JSON SCHEMA

apiTournament

21 properties

JSON SCHEMA

Scroll for all 10

Examples 5

Example request and response payloads for these APIs.

Heroiclabs Authenticate Email Example

3 fields

EXAMPLE

Heroiclabs Create Match Example

3 fields

EXAMPLE

Heroiclabs List Leaderboard Records Example

3 fields

EXAMPLE

Heroiclabs Send Event Example

3 fields

EXAMPLE

Heroiclabs Write Storage Object Example

3 fields

EXAMPLE

Security Posture 2

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

Heroiclabs Authentication

apiKey/http · 4 schemes

SECURITY

Heroiclabs Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Heroiclabs Agentic Access

310 operations · 249 acting · 5 human-in-the-loop

310 operations · 249 acting

AGENTIC

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Vocabulary

JSONLDContext

Conformance

ErrorCatalog

Lifecycle

Conventions

DataModel

Webhooks

Scroll for all 8

Build 5

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

GitHubOrganization

Packages

SDKs

CLI

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Compliance

Compliance

Operate 7

Status, limits, changes, and where to get help

IssueTracker

Releases

StatusPage

Forums

RateLimits

Support

ChangeLog

Scroll for all 7

Commercial 6

Pricing, plans, and the legal terms of use

License

Pricing

Plans

FinOps

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 3

Properties that don't map to a standard resource type

Overlay

Overlay

Protobuf

Protobuf

Source (apis.yml)

aid: heroiclabs
name: Heroic Labs
description: 'Heroic Labs is the company behind Nakama, a leading open-source game backend server providing a comprehensive
  REST, WebSocket, and gRPC API for building scalable multiplayer and social games. The platform delivers essential backend
  services including real-time matchmaking, leaderboards, tournaments, chat, friend systems, and presence tracking. Nakama
  exposes its functionality via RESTful HTTP endpoints, real-time WebSocket connections, and gRPC, with server runtime support
  for custom logic in Go, TypeScript, and Lua. Heroic Labs also offers Heroic Cloud as a fully managed deployment platform
  and Satori as a LiveOps product for feature flags, A/B experiments, and live events.

  '
type: Index
deliveryModel:
  model: open-core
  license: Apache-2.0
  open_source: true
  commercial: true
  callable_host: false
  label: Open core · an OSS project plus a commercial hosted product
  confidence: high
  source:
  - license
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - security
  - sandbox
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/heroiclabs.png
url: https://raw.githubusercontent.com/api-evangelist/heroiclabs/refs/heads/main/apis.yml
created: '2026-06-12'
modified: '2026-08-08'
specificationVersion: '0.23'
tags:
- Game Backend
- Multiplayer
- Real-Time
- WebSocket
- Matchmaking
- Leaderboards
- Social Gaming
- Open-Source
- LiveOps
- gRPC
tags_raw:
- Game Backend
- Multiplayer
- Real-Time
- WebSocket
- Matchmaking
- Leaderboards
- Social Gaming
- Open Source
- LiveOps
- gRPC
apis:
- aid: heroiclabs:nakama-api
  name: Nakama API
  description: 'The Nakama API is the core REST and WebSocket API for Heroic Labs'' open-source game backend server. It provides
    endpoints for user authentication (social, device, email, and custom), account management, multiplayer matchmaking, real-time
    gameplay via WebSocket, leaderboards, tournaments, group and friend management, in-app notifications, storage, and remote
    procedure calls (RPC). The gRPC interface mirrors the HTTP API and is suited for server-to-server integrations. Client
    SDKs are available for Unity, Unreal Engine, Godot, JavaScript, Dart, Java, Swift, C++, and Defold.

    '
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://heroiclabs.com/nakama/
  baseURL: https://127.0.0.1:7350
  tags:
  - Game Backend
  - Multiplayer
  - Matchmaking
  - Leaderboards
  - WebSocket
  - gRPC
  - REST
  properties:
  - type: Documentation
    url: https://heroiclabs.com/docs/nakama/
  - type: OpenAPI
    url: https://heroiclabs.github.io/nakama-docs/
  - type: OpenAPI
    url: openapi/heroiclabs-nakama-api-openapi.yml
  - type: OpenAPI
    url: openapi/_original/heroiclabs-nakama-console-api-openapi.yml
  - type: GitHubRepository
    url: https://github.com/heroiclabs/nakama
  - url: graphql/heroiclabs-graphql.md
    type: GraphQL
- aid: heroiclabs:satori-api
  name: Satori API
  description: 'The Satori API is Heroic Labs'' LiveOps platform API enabling game developers to manage live operations including
    feature flags, A/B experiments, audiences, and scheduled events without redeploying game code. It integrates tightly with
    Nakama and exposes REST endpoints for event ingestion, experiment assignment, audience segmentation, and flag evaluation.
    Satori is available as a fully managed service on Heroic Cloud starting at $600 per month.

    '
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://heroiclabs.com/docs/satori/
  baseURL: https://api.heroiclabs.com
  tags:
  - LiveOps
  - Feature Flags
  - A/B Testing
  - Experiments
  - Game Analytics
  properties:
  - type: Documentation
    url: https://heroiclabs.com/docs/satori/
- aid: heroiclabs:heroiclabs-console-api
  name: Heroic Labs Console API
  description: The Console API from Heroic Labs — 73 operation(s) for console.
  humanURL: https://heroiclabs.com/nakama/
  baseURL: https://127.0.0.1:7350
  tags:
  - Console
  properties:
  - type: OpenAPI
    url: openapi/heroiclabs-console-api-openapi.yml
  - type: GitHubRepository
    url: https://github.com/heroiclabs/hiro
- aid: heroiclabs:heroiclabs-rpc-api
  name: Heroic Labs Rpc API
  description: The Rpc API from Heroic Labs — 131 operation(s) for rpc.
  humanURL: https://heroiclabs.com/nakama/
  baseURL: https://127.0.0.1:7350
  tags:
  - RPC
  tags_raw:
  - Rpc
  properties:
  - type: OpenAPI
    url: openapi/heroiclabs-rpc-api-openapi.yml
  - type: GitHubRepository
    url: https://github.com/heroiclabs/hiro
common:
- type: Overlay
  url: overlays/heroiclabs-nakama-overlay.yaml
- type: IssueTracker
  url: https://github.com/heroiclabs/nakama/issues
- type: Releases
  url: https://github.com/heroiclabs/nakama/releases
- type: License
  name: Apache-2.0
  url: https://github.com/heroiclabs/nakama/blob/master/LICENSE
- type: AgenticAccess
  url: agentic-access/heroiclabs-agentic-access.yml
- type: DomainSecurity
  url: security/heroiclabs-domain-security.yml
- type: Authentication
  url: authentication/heroiclabs-authentication.yml
- type: Website
  url: https://heroiclabs.com/
- type: Documentation
  url: https://heroiclabs.com/docs/nakama/
- type: GitHubOrg
  url: https://github.com/heroiclabs
- type: LinkedIn
  url: https://www.linkedin.com/company/heroic-labs
- type: Blog
  url: https://heroiclabs.com/blog/
- type: Pricing
  url: https://heroiclabs.com/pricing/
- type: StatusPage
  url: https://heroiclabs.com/docs/nakama/getting-started/console/status/
- type: X
  url: https://twitter.com/heroicdev
- type: Forums
  url: https://forum.heroiclabs.com/
- type: Plans
  url: plans/heroiclabs-plans-pricing.yml
- type: RateLimits
  url: rate-limits/heroiclabs-rate-limits.yml
- type: FinOps
  url: finops/heroiclabs-finops.yml
- type: Vocabulary
  url: vocabulary/heroiclabs-vocabulary.yml
- type: JSONLDContext
  url: json-ld/heroiclabs-context.jsonld
- type: DeveloperPortal
  url: https://heroiclabs.com/docs/
- type: APIReference
  url: https://heroiclabs.com/docs/nakama/
- type: GettingStarted
  url: https://heroiclabs.com/docs/nakama/getting-started/
- type: Support
  url: https://forum.heroiclabs.com
- type: GitHubOrganization
  url: https://github.com/heroiclabs
- type: SignUp
  url: https://cloud.heroiclabs.com/register
- type: Login
  url: https://cloud.heroiclabs.com/login
- type: TermsOfService
  url: https://heroiclabs.com/tos.txt
- type: PrivacyPolicy
  url: https://heroiclabs.com/privacypolicy.txt
- type: Packages
  url: packages/heroiclabs-packages.yml
- type: SDKs
  url: packages/heroiclabs-packages.yml
- type: X-MCPServerCandidate
  url: mcp/heroiclabs-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/heroiclabs-llms.txt
- type: Protobuf
  url: grpc/heroiclabs-nakama-realtime.proto
- type: Conformance
  url: conformance/heroiclabs-conformance.yml
- type: Compliance
  url: https://heroiclabs.com/docs/heroic-cloud/enterprise/privacy-compliance/
- type: ErrorCatalog
  url: errors/heroiclabs-problem-types.yml
- type: Lifecycle
  url: lifecycle/heroiclabs-lifecycle.yml
- type: ChangeLog
  url: changelog/heroiclabs-changelog.yml
- type: CLI
  url: cli/heroiclabs-cli.yml
- type: Sandbox
  url: sandbox/heroiclabs-sandbox.yml
- type: Conventions
  url: conventions/heroiclabs-conventions.yml
- type: DataModel
  url: data-model/heroiclabs-data-model.yml
- type: Webhooks
  url: asyncapi/heroiclabs-nakama-realtime-events.yml
- type: AgentSkill
  url: skills/_index.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-merged-from:
- heroic-labs

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