MaiCoin

MaiCoin is a Taiwan-based digital asset group that operates MAX (MaiCoin Assets eXchange), a regulated cryptocurrency exchange offering spot trading, margin borrowing (m-wallet), staking, and fiat TWD on/off-ramps. MAX publishes a public V3 RESTful trading API with 54 operations spanning public market data (markets, tickers, order book depth, k-line, public trades), order management, trade history, wallet and account balances, deposits and withdrawals, internal transfers, currency conversion, and margin loan/repayment/liquidation. A companion WebSocket streaming service delivers real-time order book, ticker, k-line, trade, market status and private order/trade/account events. Authentication uses HMAC-SHA256 request signing over a base64 payload with X-MAX-ACCESSKEY, X-MAX-PAYLOAD and X-MAX-SIGNATURE headers.

MaiCoin publishes 7 APIs on the APIs.io network, including Convert API, Order API, Public API, and 4 more. Tagged areas include Company, Cryptocurrency, Digital Assets, Exchange, and Trading.

The MaiCoin catalog on APIs.io includes 1 event-driven AsyncAPI specification.

MaiCoin’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 26 more developer resources.

🌐 Visit website 📡 Source on GitHub

60.4/100 strong ▬ flat Agent 33/100 agent ready saas Full breakdown ↓
scored 2026-09-12 · rubric v0.22.0

AccessFreeSelf serve⚡ Free to try

1 APIs

Company Cryptocurrency Digital Assets Exchange Trading Financial-Services Market Data Blockchain Taiwan WebSocket

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Capital Markets Trading Management

BC-1370

Order

POST /api/v3/wallet/{path_wallet_type}/order GET /api/v3/order DELETE /api/v3/order

Kin Score

Kin Score How this is scored →
scored 2026-09-12 · rubric v0.22.0

Composite quality — 60.4/100 · strong

Contract Quality 10.1 / 19

Developer Ergonomics 9.9 / 15

Access Clarity 11.4 / 15

Operational Transparency 6.4 / 10

Contract Governance 0.4 / 9

Discoverability 5.7 / 8

Regulatory Posture 7.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 33/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 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 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

Regulatory Posture applies to this provider. Its tags matched the Securities & Market Data 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 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 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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/maicoin: 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 9

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

MAX Exchange WebSocket API

Real-time streaming service for MAX Exchange. Public channels cover order book (book), trade, ticker, kline, market_status and m-wallet pool_quota; private channels stream order...

MAX System Status API

Unauthenticated system status endpoint reporting whether the MAX API is online or in maintenance, with an ISO 8601 last_changed_at timestamp. Documented in the MAX V3 API refere...

MaiCoin Convert API

Operations about Converts

MaiCoin Order API

Requires authentication

MaiCoin Public API

Public endpoints

MaiCoin Trade API

Requires authentication

MaiCoin Transaction API

Requires authentication

MaiCoin User API

Operations about Users

MaiCoin Wallet API

Requires authentication

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Maicoin Plans Pricing

10 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Maicoin Rate Limits

6 limits

RATE LIMITS

Event Specifications 1

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

MAX Exchange WebSocket API

Real-time streaming for MAX Exchange (MaiCoin). One WebSocket endpoint carries both public market-data channels and, after authentication, private account channels. Field names ...

ASYNCAPI

Security Posture 2

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

Maicoin Authentication

3 schemes

SECURITY

Maicoin Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

AsyncAPI

AsyncAPI

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

MCPCandidate

MCPCandidate

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

ErrorCodes

Lifecycle

DataModel

Conformance

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 4

Status, limits, changes, and where to get help

Support

StatusPage

ChangeLog

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: maicoin
name: MaiCoin
description: MaiCoin is a Taiwan-based digital asset group that operates MAX (MaiCoin Assets eXchange), a regulated cryptocurrency
  exchange offering spot trading, margin borrowing (m-wallet), staking, and fiat TWD on/off-ramps. MAX publishes a public
  V3 RESTful trading API with 54 operations spanning public market data (markets, tickers, order book depth, k-line, public
  trades), order management, trade history, wallet and account balances, deposits and withdrawals, internal transfers, currency
  conversion, and margin loan/repayment/liquidation. A companion WebSocket streaming service delivers real-time order book,
  ticker, k-line, trade, market status and private order/trade/account events. Authentication uses HMAC-SHA256 request signing
  over a base64 payload with X-MAX-ACCESSKEY, X-MAX-PAYLOAD and X-MAX-SIGNATURE headers.
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: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-09-03'
  method: derived
image: https://cdn.prod.website-files.com/61c42c1d462b6844a0915d9b/6a7160b6139bc8cdd5e3cf27_logo_MAX.png
url: https://raw.githubusercontent.com/api-evangelist/maicoin/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-25'
modified: '2026-08-25'
tags:
- Company
- Cryptocurrency
- Digital Assets
- Exchange
- Trading
- Financial-Services
- Market Data
- Blockchain
- Taiwan
- WebSocket
tags_raw:
- Company
- Cryptocurrency
- Digital Assets
- Exchange
- Trading
- Financial Services
- Market Data
- Blockchain
- Taiwan
- WebSocket
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: maicoin-max-websocket
  name: MAX Exchange WebSocket API
  description: Real-time streaming service for MAX Exchange. Public channels cover order book (book), trade, ticker, kline,
    market_status and m-wallet pool_quota; private channels stream order snapshots/updates, trade snapshots/updates, account
    balance updates and m-wallet order/trade/ad_ratio/borrowing events after HMAC-SHA256 nonce authentication.
  humanURL: https://maicoin.github.io/max-websocket-docs/
  baseURL: wss://max-stream.maicoin.com/ws
  tags:
  - WebSocket
  - Streaming
  - Market Data
  - Real-Time
  tags_raw:
  - WebSocket
  - Streaming
  - Market Data
  - Real Time
  properties:
  - type: Documentation
    url: https://maicoin.github.io/max-websocket-docs/
- aid: maicoin-max-status
  name: MAX System Status API
  description: Unauthenticated system status endpoint reporting whether the MAX API is online or in maintenance, with an ISO
    8601 last_changed_at timestamp. Documented in the MAX V3 API reference; status updates may lag by up to 30 seconds.
  humanURL: https://status-max.maicoin.com/
  baseURL: https://status-api-max.maicoin.com
  tags:
  - Status
  tags_raw:
  - Status
  - Operations
  properties:
  - type: Documentation
    url: https://max-api.maicoin.com/doc/v3.html
- aid: maicoin:maicoin-convert-api
  name: MaiCoin Convert API
  description: Operations about Converts
  humanURL: https://campaign.maicoin.com/en/api-document
  baseURL: https://max-api.maicoin.com
  tags:
  - Convert
  properties:
  - type: OpenAPI
    url: openapi/maicoin-convert-api-openapi.yml
  - type: Documentation
    url: https://campaign.maicoin.com/en/api-document
  - type: APIReference
    url: https://max-api.maicoin.com/doc/v3.html
- aid: maicoin:maicoin-order-api
  name: MaiCoin Order API
  description: Requires authentication
  humanURL: https://campaign.maicoin.com/en/api-document
  baseURL: https://max-api.maicoin.com
  tags:
  - Order
  properties:
  - type: OpenAPI
    url: openapi/maicoin-order-api-openapi.yml
  - type: Documentation
    url: https://campaign.maicoin.com/en/api-document
  - type: APIReference
    url: https://max-api.maicoin.com/doc/v3.html
- aid: maicoin:maicoin-public-api
  name: MaiCoin Public API
  description: Public endpoints
  humanURL: https://campaign.maicoin.com/en/api-document
  baseURL: https://max-api.maicoin.com
  tags:
  - Public
  properties:
  - type: OpenAPI
    url: openapi/maicoin-public-api-openapi.yml
  - type: Documentation
    url: https://campaign.maicoin.com/en/api-document
  - type: APIReference
    url: https://max-api.maicoin.com/doc/v3.html
- aid: maicoin:maicoin-trade-api
  name: MaiCoin Trade API
  description: Requires authentication
  humanURL: https://campaign.maicoin.com/en/api-document
  baseURL: https://max-api.maicoin.com
  tags:
  - Trade
  properties:
  - type: OpenAPI
    url: openapi/maicoin-trade-api-openapi.yml
  - type: Documentation
    url: https://campaign.maicoin.com/en/api-document
  - type: APIReference
    url: https://max-api.maicoin.com/doc/v3.html
- aid: maicoin:maicoin-transaction-api
  name: MaiCoin Transaction API
  description: Requires authentication
  humanURL: https://campaign.maicoin.com/en/api-document
  baseURL: https://max-api.maicoin.com
  tags:
  - Transaction
  properties:
  - type: OpenAPI
    url: openapi/maicoin-transaction-api-openapi.yml
  - type: Documentation
    url: https://campaign.maicoin.com/en/api-document
  - type: APIReference
    url: https://max-api.maicoin.com/doc/v3.html
- aid: maicoin:maicoin-user-api
  name: MaiCoin User API
  description: Operations about Users
  humanURL: https://campaign.maicoin.com/en/api-document
  baseURL: https://max-api.maicoin.com
  tags:
  - User
  properties:
  - type: OpenAPI
    url: openapi/maicoin-user-api-openapi.yml
  - type: Documentation
    url: https://campaign.maicoin.com/en/api-document
  - type: APIReference
    url: https://max-api.maicoin.com/doc/v3.html
- aid: maicoin:maicoin-wallet-api
  name: MaiCoin Wallet API
  description: Requires authentication
  humanURL: https://campaign.maicoin.com/en/api-document
  baseURL: https://max-api.maicoin.com
  tags:
  - Wallets
  tags_raw:
  - Wallet
  properties:
  - type: OpenAPI
    url: openapi/maicoin-wallet-api-openapi.yml
  - type: Documentation
    url: https://campaign.maicoin.com/en/api-document
  - type: APIReference
    url: https://max-api.maicoin.com/doc/v3.html
common:
- type: CapabilityMap
  url: capabilities/maicoin-capability-edges.yml
  name: MaiCoin Business Capability Map
- type: DomainSecurity
  url: security/maicoin-domain-security.yml
- type: Website
  url: https://max.maicoin.com
- type: DeveloperPortal
  url: https://campaign.maicoin.com/en/api
- type: Documentation
  url: https://campaign.maicoin.com/en/api-document
- type: APIReference
  url: https://max-api.maicoin.com/doc/v3.html
- type: GettingStarted
  url: https://campaign.maicoin.com/en/api
- type: Support
  url: https://support.maicoin.com
- type: Blog
  url: https://blog.maicoin.com/
- type: GitHubOrganization
  url: https://github.com/maicoin
- type: StatusPage
  url: https://status-max.maicoin.com/
- type: Pricing
  url: https://campaign.maicoin.com/en/vip
- type: SignUp
  url: https://max.maicoin.com/signup
- type: TermsOfService
  url: https://assets.maicoin.com/max/MAX-Terms-of-Use.pdf
- type: PrivacyPolicy
  url: https://assets.maicoin.com/max/max-privacy-policy.html
- type: LLMsTxt
  url: llms/maicoin-llms.txt
- type: Packages
  url: packages/maicoin-packages.yml
- type: SDKs
  url: packages/maicoin-packages.yml
- type: Authentication
  url: authentication/maicoin-authentication.yml
- type: Conventions
  url: conventions/maicoin-conventions.yml
- type: Idempotency
  url: conventions/maicoin-conventions.yml
- type: ErrorCatalog
  url: errors/maicoin-problem-types.yml
- type: ErrorCodes
  url: errors/maicoin-error-codes.yml
- type: Lifecycle
  url: lifecycle/maicoin-lifecycle.yml
- type: ChangeLog
  url: changelog/maicoin-changelog.yml
- type: RateLimits
  url: rate-limits/maicoin-rate-limits.yml
- type: Plans
  url: plans/maicoin-plans-pricing.yml
- type: DataModel
  url: data-model/maicoin-data-model.yml
- type: Conformance
  url: conformance/maicoin-conformance.yml
- type: AsyncAPI
  url: asyncapi/maicoin-max-websocket-asyncapi.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Overlay
  url: overlays/maicoin-max-v3-overlay.yaml
- type: MCPCandidate
  url: mcp/maicoin-mcp.yml
x-enrichment:
  date: '2026-08-25'
  status: enriched
  artifacts_added: 23
  pass: local-v1

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