Mythical Games

Mythical Games is a Web3 game-technology studio and platform company (an a16z portfolio company) that builds games with player-owned digital items and a secondary marketplace economy. Its business has two sides: consumer game titles (FIFA Rivals, Pudgy Party, Blankos) and the Mythical Platform, a B2B toolkit that lets any game add a secondary economy of tradeable items and currencies. The platform is exposed to integrating studios primarily through gRPC/Protobuf SDKs — the Saga SDK and the earlier IVI SDK — published for Java, C++, and Python, rather than a public REST/OpenAPI surface. The Saga gRPC API covers items, item types, currencies, currency types, listings, offers, player wallets, reservations, an NFT bridge, and metadata, with cursor-based queries and a server-streaming status channel for confirming asynchronous writes. Assets settle on the Mythos chain, a Polkadot/Substrate gaming parachain (MYTH token) whose node software is open source.

Mythical Games is listed with 1 API on the APIs.io network. Tagged areas include Company, Gaming, Web3, Blockchain, and Digital Assets.

Mythical Games’ developer surface includes authentication, engineering blog, and 21 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

26.7/100 thin ▬ flat Agent 17/100 agent aware Front door AI 1/6 silent Heartbeat 30/100 slowing saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 API 2 Agent Skills

Company Gaming Web3 Blockchain Digital Assets NFT Marketplace gRPC SDKGame Platform

Kin Score

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

Composite quality — 26.7/100 · thin

Contract Quality 5.1 / 21

Developer Ergonomics 5.6 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.6 / 11

Contract Governance 0.5 / 10

Discoverability 6.2 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 17/100 · 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 0 / 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 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.

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
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
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

9 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 21.1 — up to +15.8 composite points
Developer Ergonomics scores 32.7 — up to +13.5 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/mythical-games/apis.yml: open an issue on github.com/api-evangelist/mythical-games 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.

Mythical Saga Platform API

gRPC/Protobuf API of the Mythical Platform (Saga SDK) for issuing, transferring, and burning game items and currencies, managing item/currency types and minting, creating market...

Agent Skills 2

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

Issue and transfer a game item (Saga)

AGENT SKILL

List an item and complete a sale (Saga marketplace)

AGENT SKILL

Security Posture 2

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

Mythical Games Authentication

sdk-credential · 1 scheme

SECURITY

Mythical Games Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conventions

DataModel

Conformance

Lifecycle

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

SourceCode

Packages

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

IssueTracker

IssueTracker

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 3

Properties that don't map to a standard resource type

Protobuf

Protobuf

Marketplace

Marketplace

Blockchain

Blockchain

Source (apis.yml)

aid: mythical-games
name: Mythical Games
description: 'Mythical Games is a Web3 game-technology studio and platform company (an a16z portfolio company) that builds
  games with player-owned digital items and a secondary marketplace economy. Its business has two sides: consumer game titles
  (FIFA Rivals, Pudgy Party, Blankos) and the Mythical Platform, a B2B toolkit that lets any game add a secondary economy
  of tradeable items and currencies. The platform is exposed to integrating studios primarily through gRPC/Protobuf SDKs —
  the Saga SDK and the earlier IVI SDK — published for Java, C++, and Python, rather than a public REST/OpenAPI surface. The
  Saga gRPC API covers items, item types, currencies, currency types, listings, offers, player wallets, reservations, an NFT
  bridge, and metadata, with cursor-based queries and a server-streaming status channel for confirming asynchronous writes.
  Assets settle on the Mythos chain, a Polkadot/Substrate gaming parachain (MYTH token) whose node software is open source.'
url: https://raw.githubusercontent.com/api-evangelist/mythical-games/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - mythicalgames/saga-sdk-proto
  open_source: unknown
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.23'
image: https://mythicalgames.com/favicon.ico
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Gaming
- Web3
- Blockchain
- Digital Assets
- NFT
- Marketplace
- gRPC
- SDK
- Game Platform
apis:
- name: Mythical Saga Platform API
  description: gRPC/Protobuf API of the Mythical Platform (Saga SDK) for issuing, transferring, and burning game items and
    currencies, managing item/currency types and minting, creating marketplace listings and offers, provisioning player wallets,
    reserving inventory, bridging items to NFTs, and updating item metadata. Asynchronous writes return a trace_id (ReceivedResponse)
    and are confirmed over a server-streaming StatusStream channel.
  humanURL: https://github.com/MythicalGames/saga-sdk-proto
  baseURL: https://api.mythicalgames.com
  properties:
  - type: Protobuf
    url: grpc/saga/api/item/rpc.proto
  - type: Protobuf
    url: grpc/saga/api/listing/rpc.proto
  - type: SourceCode
    url: https://github.com/MythicalGames/saga-sdk-proto
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: IssueTracker
  url: https://github.com/MythicalGames/saga-sdk-proto/issues
- type: Website
  url: https://mythicalgames.com/
- type: DeveloperPortal
  url: https://github.com/MythicalGames
- type: GitHubOrganization
  url: https://github.com/MythicalGames
- type: SourceCode
  url: https://github.com/MythicalGames/saga-sdk-proto
- type: Protobuf
  url: grpc/saga/
- type: Packages
  url: packages/mythical-games-packages.yml
- type: SDKs
  url: packages/mythical-games-packages.yml
- type: X-MCPServerCandidate
  url: mcp/mythical-games-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: Authentication
  url: authentication/mythical-games-authentication.yml
- type: ErrorCatalog
  url: errors/mythical-games-error-codes.yml
- type: Conventions
  url: conventions/mythical-games-conventions.yml
- type: DataModel
  url: data-model/mythical-games-data-model.yml
- type: Conformance
  url: conformance/mythical-games-conformance.yml
- type: DomainSecurity
  url: security/mythical-games-domain-security.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/mythical-games-llms.txt
- type: Lifecycle
  url: lifecycle/mythical-games-lifecycle.yml
- type: Marketplace
  url: https://mythical.market/
- type: Blog
  url: https://mythicalgames.com/news
- type: TermsOfService
  url: https://mythicalgames.com/terms-of-service
- type: PrivacyPolicy
  url: https://mythicalgames.com/privacy
- type: Blockchain
  url: https://mythos.foundation
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 13
  pass: local-v1

Mythical Games API — frequently asked questions

Does Mythical Games have an API?

Yes. APIs.io lists 1 API from Mythical Games, including Mythical Saga Platform API.

How do I authenticate with the Mythical Games API?

Mythical Games uses bearer-token authentication (sdk-credential · 1 scheme). The details are profiled on APIs.io as Mythical Games Authentication.

Is the Mythical Games API ready for AI agents?

Mythical Games has a Kin Score of 26.7 out of 100 (thin) and an Agent Readiness score of 17.1 (agent-aware), scored by API Evangelist on 2026-11-06.

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