Linq.gg

LinQ is the wallet, payments and loyalty platform operated by Galactica Games, Inc. (dba Toffee) for game developers building loyalty programs, real-money gaming (RMG) and branded debit-card experiences. Games integrate a LinQ Wallet account for each player, then deposit, withdraw, transfer and reconcile funds against internal game currencies. The LinQ Wallet Public API is a gRPC / Protocol Buffers surface published on the Buf Schema Registry as buf.build/linq/linq, organised into Geo (IP and coordinate restriction checks), Auth (anonymous game sign-in and wallet-linked user sign-in), Money (accounts, balances, replenishment orders, transfers, Brazil Pix, operations history) and Sandbox (integration-test helpers) modules. Client libraries are generated from the registry for TypeScript, JavaScript and other targets, and a first-party Unity SDK handles PCI-compliant native card and Apple Pay checkout on device.

Linq.gg is listed with 1 API on the APIs.io network. Tagged areas include Company, Gaming, Payments, Wallets, and Loyalty.

Linq.gg’s developer surface includes authentication, sandbox, changelog, documentation, API reference, getting-started guide, support, and 23 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

41.6/100 developing ▬ flat Agent 20/100 agent aware Front door AI 1/6 silent Heartbeat 0/100 dormant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessOpen

1 API 3 Agent Skills

Company Gaming Payments Wallets Loyalty Fintech Real-Money Gaming gRPC Geolocation Authentication

Kin Score

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

Composite quality — 41.6/100 · developing

Contract Quality 5.1 / 21

Developer Ergonomics 11.2 / 17

Access Clarity 4.9 / 17

Operational Transparency 3.5 / 11

Contract Governance 1.9 / 10

Discoverability 6.2 / 9

Regulatory Posture 5.9 / 15

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 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 Payments 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.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
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

8 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 24.0 — up to +19.0 composite points
Access Clarity scores 28.9 — up to +14.2 composite points
Contract Governance scores 18.2 — up to +9.8 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/linqgg/apis.yml: open an issue on github.com/api-evangelist/linqgg 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
Buf Schema Registry (public Protocol Buffers modules, gRPC / ConnectRPC schema publishers)	standard	17.2 (thin)	-	-

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 1

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

APIs 1

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

LinQ Wallet Public API

gRPC / Protocol Buffers API for integrating a game with LinQ Wallet services. Covers geo restriction checks by IP and coordinates, anonymous and wallet-linked user authenticatio...

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

linqgg-onboard-player

AGENT SKILL

linqgg-run-tournament-economy

AGENT SKILL

linqgg-top-up-balance

AGENT SKILL

Security Posture 2

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

Linqgg Authentication

5 schemes

SECURITY

Linqgg Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

Sandbox

Sandbox

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Lifecycle

Conformance

Components

DataModel

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Compliance

Compliance

Operate 4

Status, limits, changes, and where to get help

Deprecation

ChangeLog

Roadmap

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Protobuf

Protobuf

Source (apis.yml)

aid: linqgg
name: Linq.gg
description: LinQ is the wallet, payments and loyalty platform operated by Galactica Games, Inc. (dba Toffee) for game developers
  building loyalty programs, real-money gaming (RMG) and branded debit-card experiences. Games integrate a LinQ Wallet account
  for each player, then deposit, withdraw, transfer and reconcile funds against internal game currencies. The LinQ Wallet
  Public API is a gRPC / Protocol Buffers surface published on the Buf Schema Registry as buf.build/linq/linq, organised into
  Geo (IP and coordinate restriction checks), Auth (anonymous game sign-in and wallet-linked user sign-in), Money (accounts,
  balances, replenishment orders, transfers, Brazil Pix, operations history) and Sandbox (integration-test helpers) modules.
  Client libraries are generated from the registry for TypeScript, JavaScript and other targets, and a first-party Unity SDK
  handles PCI-compliant native card and Apple Pay checkout on device.
url: https://raw.githubusercontent.com/api-evangelist/linqgg/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Open access
  confidence: medium
  source:
  - authentication
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://framerusercontent.com/images/IDaPLV2CTzzUnLl1BCRzzHVprF4.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-operator: Galactica Games, Inc. (dba Toffee)
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
x-docs-platform: docusaurus
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
x-docs-hosting: github-pages
tags:
- Company
- Gaming
- Payments
- Wallets
- Loyalty
- Fintech
- Real-Money Gaming
- gRPC
- Geolocation
- Authentication
tags_raw:
- Company
- Gaming
- Payments
- Wallet
- Loyalty
- Fintech
- Real Money Gaming
- gRPC
- Geolocation
- Authentication
apis:
- aid: linqgg:linq-wallet-public-api
  name: LinQ Wallet Public API
  description: gRPC / Protocol Buffers API for integrating a game with LinQ Wallet services. Covers geo restriction checks
    by IP and coordinates, anonymous and wallet-linked user authentication, account balances, deposits and withdrawals against
    internal game currencies, replenishment and transfer orders, native card / Apple Pay / Brazil Pix checkout, operations
    history and sandbox test helpers. Schemas are published publicly on the Buf Schema Registry; clients are generated per
    language rather than hand-written.
  humanURL: https://docs.linq.gg/
  baseURL: https://services.galactica.games
  tags:
  - Wallets
  - Payments
  - Gaming
  - gRPC
  - Protobuf
  tags_raw:
  - Wallet
  - Payments
  - Gaming
  - gRPC
  - Protobuf
  properties:
  - type: Documentation
    url: https://docs.linq.gg/
  - type: APIReference
    url: https://buf.build/linq/linq
  - type: GettingStarted
    url: https://docs.linq.gg/getting-started
  - type: Protobuf
    url: grpc/linqgg-services.yml
  - type: Authentication
    url: authentication/linqgg-authentication.yml
  - type: ErrorCatalog
    url: errors/linqgg-error-codes.yml
  - type: DataModel
    url: data-model/linqgg-data-model.yml
common:
- type: Website
  url: https://www.linq.gg/
- type: X-MCPServerCandidate
  url: mcp/linqgg-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: DomainSecurity
  url: security/linqgg-domain-security.yml
- type: Protobuf
  url: grpc/linqgg-services.yml
- type: Packages
  url: packages/linqgg-packages.yml
- type: SDKs
  url: packages/linqgg-packages.yml
- type: Authentication
  url: authentication/linqgg-authentication.yml
- type: Conventions
  url: conventions/linqgg-conventions.yml
- type: Idempotency
  url: conventions/linqgg-conventions.yml
- type: ErrorCatalog
  url: errors/linqgg-error-codes.yml
- type: Lifecycle
  url: lifecycle/linqgg-lifecycle.yml
- type: Deprecation
  url: lifecycle/linqgg-lifecycle.yml
- type: Conformance
  url: conformance/linqgg-conformance.yml
- type: Compliance
  url: conformance/linqgg-conformance.yml
- type: Sandbox
  url: sandbox/linqgg-sandbox.yml
- type: ChangeLog
  url: changelog/linqgg-changelog.yml
- type: Components
  url: components/linqgg-components.yml
- type: DataModel
  url: data-model/linqgg-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/linqgg-llms.txt
- type: Roadmap
  url: https://github.com/linqgg/unity-sdk/blob/main/VISION.md
- type: DeveloperPortal
  url: https://docs.linq.gg/
- type: Documentation
  url: https://docs.linq.gg/
- type: APIReference
  url: https://buf.build/linq/linq
- type: GettingStarted
  url: https://docs.linq.gg/getting-started
- type: Support
  url: https://docs.linq.gg/contact
- type: Blog
  url: https://linq.gg/blog
- type: GitHubOrganization
  url: https://github.com/linqgg
- type: TermsOfService
  url: https://linq.gg/terms-of-use
- type: PrivacyPolicy
  url: https://linq.gg/privacy-policy
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Linq.gg API — frequently asked questions

Does Linq.gg have an API?

Yes. APIs.io lists 1 API from Linq.gg, including LinQ Wallet Public API.

How do I authenticate with the Linq.gg API?

Linq.gg uses bearer-token authentication (5 schemes). The details are profiled on APIs.io as Linqgg Authentication.

Is the Linq.gg API ready for AI agents?

Linq.gg has a Kin Score of 41.6 out of 100 (developing) and an Agent Readiness score of 20.3 (agent-aware), scored by API Evangelist on 2026-11-06.

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