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 4 API contracts indexed on the APIs.io network, including Nakama API, Console API, Rpc API, and 1 more. 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 📡 Profile data on GitHub

64.5/100 strong ▬ flat Agent 26/100 agent aware Front door AI 1/6 silent Heartbeat 61/100 alive open core · Apache-2.0 Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

4 published contracts 3 Agent Skills

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

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 64.5/100 · strong

Contract Quality 8.9 / 16

Developer Ergonomics 10.5 / 13

Access Clarity 10.6 / 13

Operational Transparency 2.9 / 8

Contract Governance 3.3 / 8

Discoverability 5.1 / 7

Regulatory Posture 4.1 / 15

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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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 65 points between them, because both conditional facets apply and carry 35 points together. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 65% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/heroiclabs/"><img src="https://apis.io/badge/heroiclabs/card.svg" alt="Heroic Labs on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

5 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 54.7 — up to +11.3 composite points
Operational Transparency scores 34.2 — up to +8.6 composite points
Contract Governance scores 41.7 — up to +7.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/heroiclabs/apis.yml: open an issue on github.com/api-evangelist/heroiclabs to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Gaming, Entertainment and Sports	builds-on	26.8 (thin)	-	1
Buf Schema Registry (public Protocol Buffers modules, gRPC / ConnectRPC schema publishers)	builds-on	26.8 (thin)	-	1

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 3

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

gRPC

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

WebSockets

AGENT SKILL

Read and write player storage objects

AGENT SKILL

Submit and read a leaderboard score

AGENT SKILL

Heroic Labs API pricing

Prices published by Heroic Labs, read 2026-10-28 from heroiclabs.com/pricing/.

Plan	Price
Satori on Heroic Cloud	Starts from $600/month Includes: Managed Satori LiveOps, No DAU/MAU/CCU or event limits, dedicated hardware resources, dedicated mana
Studio Basic	$2,000 Includes: Dedicated email support, Monday - Friday support hours, 24 hours response SLA
Studio Standard	$6,000 Includes: 24x7 support hours, 8 hour response SLA, 2 developer hours per month, 99.5% uptime guarantee, dedica
Studio Premium	Contact Us Includes: Private Slack channel, direct engineering support, 99.9% uptime guarantee, 1 hour response SLA

Plan details, limits and sources →

Billed by: subscription · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Heroiclabs Plans Pricing

4 plans

PLANS

Heroiclabs Price Estimates

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Heroiclabs Rate Limits

6 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Heroic Labs

SLA

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 — jsonschema rules

5 rules · 3 warnings 2 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Heroiclabs Nakama Overlay

2 actions · update · heroic-labs-nakama-openapi-original.json

DERIVED

JSON Schema 10

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

apiAccount

7 properties

JSON SCHEMA

apiChannelMessage

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 · 247 acting · 5 human-in-the-loop

310 operations · 247 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: '2026-11-06'
  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
- Open-Source
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: openapi/heroiclabs-nakama-api-openapi.yml
  - type: OpenAPI
    url: https://heroiclabs.github.io/nakama-docs/
  - type: OpenAPI
    url: openapi/_original/heroiclabs-nakama-console-api-openapi.yml
  - type: GitHubRepository
    url: https://github.com/heroiclabs/nakama
- 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

Heroic Labs API — frequently asked questions

Does Heroic Labs have an API?

Yes. APIs.io lists 4 APIs from Heroic Labs, including Nakama API, Satori API and Heroic Labs Console API, and 1 more.

Is there an OpenAPI specification for the Heroic Labs API?

Yes. APIs.io indexes 3 OpenAPI specifications for Heroic Labs, each linked for download from this page.

How do I authenticate with the Heroic Labs API?

Heroic Labs uses bearer-token authentication (apiKey/http · 4 schemes). The details are profiled on APIs.io as Heroiclabs Authentication.

How much does the Heroic Labs API cost?

Heroic Labs publishes its prices; its Satori on Heroic Cloud plan is Starts from $600/month as of 2026-10-28. APIs.io lists 4 pricing plans for Heroic Labs, with each plan's price, limits and inclusions under Pricing on this page.

Is the Heroic Labs API ready for AI agents?

Heroic Labs has a Kin Score of 64.5 out of 100 (strong) and an Agent Readiness score of 25.5 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/heroiclabs"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/heroiclabs/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/heroiclabs/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.