Cubesphere

Cubesphere (cubesphere.xyz, branded CubeSphere) is a Korean-language crypto market intelligence platform that tracks about 270 coins, puts news, trending, exchange listings, on-chain and corporate treasury events on one timeline, and tags each event to coins and categories. It also runs Cubesphere Data (beta), which pulls SEC EDGAR Form 4, Form 144 and Schedule 13D/G insider filings and serves them as clean economic events through an HTTP API (api.cubesphere.xyz) and an MCP server (mcp.cubesphere.xyz) that AI agents can query. A free tier gives 24-hour-delayed data; basic and pro tiers use an X-API-Key.

Cubesphere publishes 4 API contracts indexed on the APIs.io network, including Companies API, Events API, Health API, and 1 more. Tagged areas include Company, Financial Data, SEC Filings, Insider Trading, and Cryptocurrency.

The Cubesphere catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Cubesphere’s developer surface includes authentication, documentation, API reference, support, signup flow, and 25 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

46.3/100 developing Agent 36/100 agent ready Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

2 published contracts 1 MCP Servers 4 Agent Skills

Company Financial Data SEC Filings Insider Trading Cryptocurrency Market Intelligence MCP

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 46.3/100 · developing

Contract Quality 10.5 / 21

Developer Ergonomics 6.0 / 17

Access Clarity 10.8 / 17

Operational Transparency 3.9 / 11

Contract Governance 2.2 / 10

Discoverability 5.5 / 9

Regulatory Posture 3.5 / 15

Agent readiness — 36/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 12 / 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 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 4 / 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 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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

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):

A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
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) Ask about this →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks Ask about this →
Protected Resource Metadata +5 pts — a served /.well-known/oauth-protected-resource carrying `resource` (documented), and naming its authorization_servers (verified) Ask about this →

3 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 35.1 — up to +13.0 composite points Ask about this →
Contract Quality scores 49.5 — up to +12.6 composite points Ask about this →
Contract Governance scores 22.0 — up to +9.4 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/cubesphere-xyz/apis.yml: open an issue on github.com/api-evangelist/cubesphere-xyz 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 →

Standards implemented 2

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 4

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

Cubesphere Data MCP Server

MCP server for Cubesphere Data (docs name mcp.cubesphere.xyz) that lets AI agents query the same SEC insider-filing events directly. The host root returns 404, but the streamabl...

Cubesphere Companies API

발행사 단위 통합 타임라인.

Cubesphere Events API

무료 티어 이벤트 피드.

Cubesphere Health API

기동 확인. 레이트리밋·usage 로깅 면제.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Cubesphere MCP Server

Remote MCP server at mcp.cubesphere.xyz over streamable HTTP; 4 tools listed.

MCP SERVER

Agent Skills 4

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

company-insider-profile

AGENT SKILL

insider-event-search

AGENT SKILL

research-company-insider-activity

AGENT SKILL

screen-insider-buys

AGENT SKILL

Cubesphere API pricing

Prices published by Cubesphere.

Plan	Price
free	무인증(free)
basic	`X-API-Key`(basic/pro)
pro	`X-API-Key`(basic/pro)

Plan details, limits and sources →

Rate limits

free per-minute: free: IP 당 분당 60
free per-day: IP 당 분당 60 · 일당 2,000
basic per-minute: basic: 키 당 분당 120

All 6 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Cubesphere Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Cubesphere Rate Limits

6 limits

RATE LIMITS

Terms of Service 1

What its API terms permit and prohibit, quoted from its own page.

Cubesphere

4 quoted statements, read from Cubesphere's own page on 2026-11-09.

TERMS

Privacy & Data 1

Its role, the data it processes, retention and transfers, quoted from its own privacy page.

Cubesphere

8 quoted statements, read from Cubesphere's own page on 2026-11-09.

PRIVACY

Eligibility 1

Who may sign up and where, quoted from its own terms.

Cubesphere

1 quoted statement, read from Cubesphere's own page on 2026-11-09.

ELIGIBILITY

Semantic Vocabularies 1

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

Cubesphere Xyz Context

9 classes · 49 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Cubesphere API Rules

41 rules · 39 error-severity 1 warn-severity 1 info-severity

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.

Cubesphere Openapi Overlay

4 actions · security · cubesphere-xyz-openapi.yml

DERIVED

JSON Schema 4

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

EventsResponse

3 properties

JSON SCHEMA

HealthResponse

4 properties

JSON SCHEMA

InsiderFlowResponse

5 properties

JSON SCHEMA

TimelineResponse

4 properties

JSON SCHEMA

Security Posture 2

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

Cubesphere Authentication

2 schemes

SECURITY

Cubesphere Domain Security

TLSv1.3

SECURITY

Agentic Access (API Evangelist recommendations) 1

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

Cubesphere Agentic Access

4 operations

4 operations · 0 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

AgentSkill

AgentSkill

MCPServer

MCPServer

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conventions

Lifecycle

ErrorCatalog

Conformance

Scroll for all 8

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

Deprecation

Deprecation

Support

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

UsageTerms

Company 1

The organization behind the API

Website

Website

Other 4

Properties that don't map to a standard resource type

Overlay

Hosts

DataProcessing

Eligibility

Source (apis.yml)

aid: cubesphere-xyz
name: Cubesphere
description: Cubesphere (cubesphere.xyz, branded CubeSphere) is a Korean-language crypto market intelligence platform that
  tracks about 270 coins, puts news, trending, exchange listings, on-chain and corporate treasury events on one timeline,
  and tags each event to coins and categories. It also runs Cubesphere Data (beta), which pulls SEC EDGAR Form 4, Form 144
  and Schedule 13D/G insider filings and serves them as clean economic events through an HTTP API (api.cubesphere.xyz) and
  an MCP server (mcp.cubesphere.xyz) that AI agents can query. A free tier gives 24-hour-delayed data; basic and pro tiers
  use an X-API-Key.
url: https://artifacts.apis.io/cubesphere-xyz/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-04 (modular-v1; was harvest)
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: high
  probe_state: covered
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-11-04'
modified: '2026-11-04'
tags:
- Company
- Financial Data
- SEC Filings
- Insider Trading
- Cryptocurrency
- Market Intelligence
- MCP
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://cubesphere.xyz/static/og-default.png?v=2
common:
- type: AgenticAccess
  url: agentic-access/cubesphere-xyz-agentic-access.yml
- type: RateLimits
  url: rate-limits/cubesphere-xyz-rate-limits.yml
- type: Plans
  url: plans/cubesphere-xyz-plans-pricing.yml
- type: Spectral
  url: rules/cubesphere-xyz-rules.yml
- type: JSONLD
  url: json-ld/cubesphere-xyz-context.jsonld
- type: Vocabulary
  url: vocabulary/cubesphere-xyz-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/cubesphere-xyz-data-model.yml
- type: Conventions
  url: conventions/cubesphere-xyz-conventions.yml
- type: Authentication
  url: authentication/cubesphere-xyz-authentication.yml
- type: Deprecation
  url: lifecycle/cubesphere-xyz-lifecycle.yml
- type: Lifecycle
  url: lifecycle/cubesphere-xyz-lifecycle.yml
- type: ErrorCatalog
  url: errors/cubesphere-xyz-problem-types.yml
- type: Conformance
  url: conformance/cubesphere-xyz-conformance.yml
- type: Overlay
  url: overlays/cubesphere-xyz-openapi-overlay.yaml
- type: ToolCrosswalk
  url: mcp/cubesphere-xyz-tool-crosswalk.yml
- type: MCPServer
  url: mcp/cubesphere-xyz-mcp.yml
- type: Hosts
  url: hosts/cubesphere-xyz-hosts.yml
- type: DomainSecurity
  url: security/cubesphere-xyz-domain-security.yml
- type: Website
  url: https://cubesphere.xyz/
- type: Documentation
  url: https://docs.cubesphere.xyz/
- type: APIReference
  url: https://api.cubesphere.xyz/docs
- type: Support
  url: https://cubesphere.xyz/contact/
- type: SignUp
  url: https://cubesphere.xyz/accounts/signup/
- type: Login
  url: https://cubesphere.xyz/accounts/login/
- type: TermsOfService
  url: https://docs.cubesphere.xyz/terms.html
- type: PrivacyPolicy
  url: https://docs.cubesphere.xyz/privacy.html
- type: UsageTerms
  url: terms/cubesphere-xyz-terms-of-service.yml
- type: DataProcessing
  url: privacy/cubesphere-xyz-privacy-policy.yml
- type: Eligibility
  url: eligibility/cubesphere-xyz-eligibility.yml
apis:
- name: Cubesphere Data MCP Server
  description: MCP server for Cubesphere Data (docs name mcp.cubesphere.xyz) that lets AI agents query the same SEC insider-filing
    events directly. The host root returns 404, but the streamable-HTTP endpoint /mcp answered an anonymous initialize on
    2026-11-04 (serverInfo cubespherex-mcp 1.29.0) and tools/list returned four tools (search_insider_events, get_company_timeline,
    get_activist_stakes, get_sale_notices).
  humanURL: https://docs.cubesphere.xyz/
  baseURL: https://mcp.cubesphere.xyz/mcp
  tags:
  - MCP
  properties:
  - type: Documentation
    url: https://docs.cubesphere.xyz/
  aid: cubesphere-xyz:cubesphere-data-mcp-server
- aid: cubesphere-xyz:cubesphere-xyz-companies-api
  name: Cubesphere Companies API
  description: 발행사 단위 통합 타임라인.
  humanURL: https://api.cubesphere.xyz/docs
  baseURL: https://api.cubesphere.xyz
  tags:
  - Companies
  tags_raw:
  - companies
  properties:
  - type: OpenAPI
    url: openapi/cubesphere-xyz-companies-api-openapi.yml
  - type: Documentation
    url: https://docs.cubesphere.xyz/
  - type: JSONSchema
    url: json-schema/cubesphere-xyz-insider-flow-response-schema.json
  - type: JSONSchema
    url: json-schema/cubesphere-xyz-timeline-response-schema.json
- aid: cubesphere-xyz:cubesphere-xyz-events-api
  name: Cubesphere Events API
  description: 무료 티어 이벤트 피드.
  humanURL: https://api.cubesphere.xyz/docs
  baseURL: https://api.cubesphere.xyz
  tags:
  - Event
  tags_raw:
  - events
  properties:
  - type: OpenAPI
    url: openapi/cubesphere-xyz-events-api-openapi.yml
  - type: Documentation
    url: https://docs.cubesphere.xyz/
  - type: JSONSchema
    url: json-schema/cubesphere-xyz-events-response-schema.json
- aid: cubesphere-xyz:cubesphere-xyz-health-api
  name: Cubesphere Health API
  description: 기동 확인. 레이트리밋·usage 로깅 면제.
  humanURL: https://api.cubesphere.xyz/docs
  baseURL: https://api.cubesphere.xyz
  tags:
  - Health
  tags_raw:
  - health
  properties:
  - type: OpenAPI
    url: openapi/cubesphere-xyz-health-api-openapi.yml
  - type: Documentation
    url: https://docs.cubesphere.xyz/
  - type: JSONSchema
    url: json-schema/cubesphere-xyz-health-response-schema.json
x-coverage:
  state: covered
  reason: identity-verified
  detail: Name from docs ToS ("operated by Cubesphere") and site title "CubeSphere"; MCP registry entry xyz.cubesphere/insider
    websiteUrl https://docs.cubesphere.xyz. All pointers GET-probed 2026-11-04.
  evidence:
  - url: https://cubesphere.xyz/
    status: 200
  - url: https://docs.cubesphere.xyz/
    status: 200
  - url: https://api.cubesphere.xyz/docs
    status: 200
  - url: https://cubesphere.xyz/contact/
    status: 200
  - url: https://cubesphere.xyz/accounts/signup/
    status: 200
  - url: https://cubesphere.xyz/accounts/login/
    status: 200
  - url: https://docs.cubesphere.xyz/terms.html
    status: 200
  - url: https://docs.cubesphere.xyz/privacy.html
    status: 200
  - url: https://cubesphere.xyz/static/og-default.png?v=2
    status: 200
  - url: https://registry.modelcontextprotocol.io/v0/servers?search=cubesphere
    status: 200
x-enrichment:
  date: '2026-11-04'
  status: enriched
  artifacts_added: 35
  pass: modular-v1
  engine: identity=anthropic,contract=anthropic,surfaces=anthropic,docs=anthropic,regulatory=anthropic

Cubesphere API — frequently asked questions

Does Cubesphere have an API?

Yes. APIs.io lists 4 APIs from Cubesphere, including Cubesphere Data MCP Server, Cubesphere Companies API and Cubesphere Events API, and 1 more.

Is there an OpenAPI specification for the Cubesphere API?

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

How do I authenticate with the Cubesphere API?

Cubesphere uses bearer-token authentication (2 schemes). The details are profiled on APIs.io as Cubesphere Authentication.

How much does the Cubesphere API cost?

Cubesphere publishes its prices; its free plan is 무인증(free) as of 2026-11-04. APIs.io lists 3 pricing plans for Cubesphere, with each plan's price, limits and inclusions under Pricing on this page.

Does Cubesphere have an MCP server?

Yes. APIs.io lists 1 MCP server for Cubesphere: Remote MCP server at mcp.cubesphere.xyz over streamable HTTP; 4 tools listed.

Is the Cubesphere API ready for AI agents?

Cubesphere has a Kin Score of 46.3 out of 100 (developing) and an Agent Readiness score of 35.6 (agent-ready), scored by API Evangelist on 2026-11-13.

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