Cubist website screenshot

Cubist

Cubist builds hardware-backed key management and embedded wallet infrastructure for Web3. Its flagship product, CubeSigner, generates and seals cryptographic keys inside FIPS 140 HSMs running in AWS Nitro Enclaves and enforces transaction approvals with a programmable Policy-as-Code engine. The CubeSigner REST API spans organizations, users, roles, keys, policies, contacts, sessions, and multi-factor approvals, plus multi-chain signing for EVM (Ethereum, Avalanche), Bitcoin/Taproot, Solana, Sui, Tendermint, Ethereum validators (eth2), and Babylon Bitcoin staking. Authentication is a two-stage OIDC-to-session-token exchange with least-privilege scopes and step-up MFA. Cubist is backed by Amplify Partners and Polychain and is SOC 2 compliant.

Cubist publishes 30 API contracts indexed on the APIs.io network, including Account API, Accounts API, Audit API, and 27 more. Tagged areas include Company, Developer Tools, Key Management, Wallets, and Digital Signature.

The Cubist catalog on APIs.io includes 1 Spectral governance ruleset.

Cubist’s developer surface includes documentation, engineering blog, support, authentication, sandbox, CLI, and 25 more developer resources.

🌐 Visit website📡 Profile data on GitHub
44.9/100 developing ▬ flat Agent 35/100 agent ready Front door AI 4/6 moderate Heartbeat 96/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →
1 published contract 2 Agent Skills
CompanyDeveloper ToolsKey ManagementWalletsDigital SignatureSecurityBlockchainWeb3Custody

What this lets a business do 2

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

Cybersecurity Management
BC-620
AccountAuthMigrationIdentityKeysKeys In RoleLogin
GET /v0/org/{org_id}/identity POST /v0/org/{org_id}/identity/prove/oidc POST /v0/org/{org_id}/identity/verify POST /v0/org/{org_id}/idp/authenticate
SaaS Tenant Management
BC-4230
Orgs

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0
Composite quality — 44.9/100 · developing
Contract Quality 8.9 / 19
Developer Ergonomics 7.8 / 15
Access Clarity 5.5 / 15
Operational Transparency 1.3 / 10
Contract Governance 2.9 / 9
Discoverability 5.5 / 8
Regulatory Posture 6.2 / 15
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 35/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 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 7 / 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 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 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 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/.
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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
  • 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)
  • 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)
  • Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
4 more unmet checks in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
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/cubist/apis.yml: open an issue on github.com/api-evangelist/cubist 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 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.

OpenAPI
measured — observed by APIs.io (published)

APIs 30

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

Cubist Account API

The Account API from Cubist — 1 operation(s) for account.

Cubist Accounts API

The Accounts API from Cubist — 1 operation(s) for accounts.

Cubist Audit API

The Audit API from Cubist — 1 operation(s) for audit.

Cubist AuthMigration API

The AuthMigration API from Cubist — 3 operation(s) for authmigration.

Cubist Babylon API

The Babylon API from Cubist — 2 operation(s) for babylon.

Cubist Contact API

The Contact API from Cubist — 3 operation(s) for contact.

Cubist Cube3Signer API

The Cube3Signer API from Cubist — 1 operation(s) for cube3signer.

Cubist Identity API

The Identity API from Cubist — 4 operation(s) for identity.

Cubist Internal API

The Internal API from Cubist — 4 operation(s) for internal.

Cubist Keys API

The Keys API from Cubist — 10 operation(s) for keys.

Cubist Keys In Role API

The Keys In Role API from Cubist — 2 operation(s) for keys in role.

Cubist Login API

The Login API from Cubist — 2 operation(s) for login.

Cubist Metrics API

The Metrics API from Cubist — 2 operation(s) for metrics.

Cubist MFA API

The MFA API from Cubist — 5 operation(s) for mfa.

Cubist Misc API

The Misc API from Cubist — 1 operation(s) for misc.

Cubist MMI API

The MMI API from Cubist — 6 operation(s) for mmi.

Cubist Org API

The Org API from Cubist — 1 operation(s) for org.

Cubist Orgs API

The Orgs API from Cubist — 4 operation(s) for orgs.

Cubist Policies API

The Policies API from Cubist — 11 operation(s) for policies.

Cubist Role Access Tokens API

The Role Access Tokens API from Cubist — 2 operation(s) for role access tokens.

Cubist Roles API

The Roles API from Cubist — 7 operation(s) for roles.

Cubist RPC API

The RPC API from Cubist — 1 operation(s) for rpc.

Cubist Sessions API

The Sessions API from Cubist — 3 operation(s) for sessions.

Cubist SignerSession API

The SignerSession API from Cubist — 1 operation(s) for signersession.

Cubist Signing API

The Signing API from Cubist — 21 operation(s) for signing.

Cubist User API

The User API from Cubist — 11 operation(s) for user.

Cubist User Export API

The User Export API from Cubist — 1 operation(s) for user export.

Cubist Users In Org API

The Users In Org API from Cubist — 9 operation(s) for users in org.

Cubist Users In Role API

The Users In Role API from Cubist — 2 operation(s) for users in role.

Cubist O Auth2 API

The OAuth2 API from Cubist — 7 operation(s) for oauth2.

Scroll for all 30

Open Collections 30

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

CubeSigner Account API

OPEN COLLECTION

CubeSigner Account Accounts API

OPEN COLLECTION

CubeSigner Account Audit API

OPEN COLLECTION

CubeSigner Account AuthMigration API

OPEN COLLECTION

CubeSigner Account Babylon API

OPEN COLLECTION

CubeSigner Account Contact API

OPEN COLLECTION

CubeSigner Account Cube3Signer API

OPEN COLLECTION

CubeSigner Account Identity API

OPEN COLLECTION

CubeSigner Account Internal API

OPEN COLLECTION

CubeSigner Account Keys API

OPEN COLLECTION

CubeSigner Account Keys In Role API

OPEN COLLECTION

CubeSigner Account Login API

OPEN COLLECTION

CubeSigner Account Metrics API

OPEN COLLECTION

CubeSigner Account MFA API

OPEN COLLECTION

CubeSigner Account Misc API

OPEN COLLECTION

CubeSigner Account MMI API

OPEN COLLECTION

CubeSigner Account OAuth2 API

OPEN COLLECTION

CubeSigner Account Org API

OPEN COLLECTION

CubeSigner Account Orgs API

OPEN COLLECTION

CubeSigner Account Policies API

OPEN COLLECTION

CubeSigner Account Role Access Tokens API

OPEN COLLECTION

CubeSigner Account Roles API

OPEN COLLECTION

CubeSigner Account RPC API

OPEN COLLECTION

CubeSigner Account Sessions API

OPEN COLLECTION

CubeSigner Account SignerSession API

OPEN COLLECTION

CubeSigner Account Signing API

OPEN COLLECTION

CubeSigner Account User API

OPEN COLLECTION

CubeSigner Account User Export API

OPEN COLLECTION

CubeSigner Account Users In Org API

OPEN COLLECTION

CubeSigner Account Users In Role API

OPEN COLLECTION

Scroll for all 30

Agent Skills 2

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

Create a key and sign an EVM transaction

AGENT SKILL

Set up a scoped role with a policy and session

AGENT SKILL

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Cubist API Rules

68 rules · 46 errors 15 warnings 7 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.

Cubist Cubesigner Overlay

2 actions · update · cubist-cubesigner-openapi-original.json

DERIVED

Security Posture 3

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

Cubist Authentication

oidc-exchange/session-token · 2 schemes

SECURITY

Cubist Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Cubist Vulnerability Disclosure

no policy recorded

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Cubist Scopes

135 scopes

135 scopes

SCOPES

Agentic Access 1

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

Cubist Agentic Access

173 operations · 122 acting · 13 human-in-the-loop

173 operations · 122 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Sandbox
Sandbox

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate
X-MCPServerCandidate
 AgentSkill
AgentSkill
 AgentSkill
AgentSkill
 LLMsTxt
LLMsTxt
 AgenticAccess
AgenticAccess

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 DataModel
DataModel
 Lifecycle
Lifecycle
 Conformance
Conformance
 Components
Components

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 CLI
CLI
 Packages
Packages
 SDKs
SDKs

Access & Security 7

Authentication, authorization, and security posture

Security
Security
 Compliance
Compliance
 TrustCenter
TrustCenter
 Authentication
Authentication
 OAuthScopes
OAuthScopes
 DomainSecurity
DomainSecurity
 VulnerabilityDisclosure
VulnerabilityDisclosure

Scroll for all 7

Operate 1

Status, limits, changes, and where to get help

Support
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 2

Properties that don't map to a standard resource type

CapabilityMap
CapabilityMap
 Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: cubist
name: Cubist
description: Cubist builds hardware-backed key management and embedded wallet infrastructure for Web3. Its flagship product,
  CubeSigner, generates and seals cryptographic keys inside FIPS 140 HSMs running in AWS Nitro Enclaves and enforces transaction
  approvals with a programmable Policy-as-Code engine. The CubeSigner REST API spans organizations, users, roles, keys, policies,
  contacts, sessions, and multi-factor approvals, plus multi-chain signing for EVM (Ethereum, Avalanche), Bitcoin/Taproot,
  Solana, Sui, Tendermint, Ethereum validators (eth2), and Babylon Bitcoin staking. Authentication is a two-stage OIDC-to-session-token
  exchange with least-privilege scopes and step-up MFA. Cubist is backed by Amplify Partners and Polychain and is SOC 2 compliant.
url: https://raw.githubusercontent.com/api-evangelist/cubist/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - scopes
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://cdn.prod.website-files.com/638a2693daaf8527290065a3/684c2782072fa5039c3846f0_Opengraph%20-%20Home.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- amplify-partners
- polychain
x-tier: enriched
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Developer Tools
- Key Management
- Wallets
- Digital Signature
- Security
- Blockchain
- Web3
- Custody
tags_raw:
- Company
- Developer Tools
- Key Management
- Wallets
- Digital Signatures
- Security
- Blockchain
- Web3
- Custody
apis:
- aid: cubist:cubist-account-api
  name: Cubist Account API
  description: The Account API from Cubist — 1 operation(s) for account.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/cubist-account-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-accounts-api
  name: Cubist Accounts API
  description: The Accounts API from Cubist — 1 operation(s) for accounts.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Account
  tags_raw:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/cubist-accounts-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-audit-api
  name: Cubist Audit API
  description: The Audit API from Cubist — 1 operation(s) for audit.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Audit
  properties:
  - type: OpenAPI
    url: openapi/cubist-audit-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-authmigration-api
  name: Cubist AuthMigration API
  description: The AuthMigration API from Cubist — 3 operation(s) for authmigration.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - AuthMigration
  properties:
  - type: OpenAPI
    url: openapi/cubist-authmigration-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-babylon-api
  name: Cubist Babylon API
  description: The Babylon API from Cubist — 2 operation(s) for babylon.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Babylon
  properties:
  - type: OpenAPI
    url: openapi/cubist-babylon-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-contact-api
  name: Cubist Contact API
  description: The Contact API from Cubist — 3 operation(s) for contact.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Contact
  properties:
  - type: OpenAPI
    url: openapi/cubist-contact-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-cube3signer-api
  name: Cubist Cube3Signer API
  description: The Cube3Signer API from Cubist — 1 operation(s) for cube3signer.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Cube3Signer
  properties:
  - type: OpenAPI
    url: openapi/cubist-cube3signer-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-identity-api
  name: Cubist Identity API
  description: The Identity API from Cubist — 4 operation(s) for identity.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Identity
  properties:
  - type: OpenAPI
    url: openapi/cubist-identity-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-internal-api
  name: Cubist Internal API
  description: The Internal API from Cubist — 4 operation(s) for internal.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Internal
  properties:
  - type: OpenAPI
    url: openapi/cubist-internal-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-keys-api
  name: Cubist Keys API
  description: The Keys API from Cubist — 10 operation(s) for keys.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Keys
  properties:
  - type: OpenAPI
    url: openapi/cubist-keys-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-keys-in-role-api
  name: Cubist Keys In Role API
  description: The Keys In Role API from Cubist — 2 operation(s) for keys in role.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Keys In Role
  properties:
  - type: OpenAPI
    url: openapi/cubist-keys-in-role-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-login-api
  name: Cubist Login API
  description: The Login API from Cubist — 2 operation(s) for login.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Login
  properties:
  - type: OpenAPI
    url: openapi/cubist-login-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-metrics-api
  name: Cubist Metrics API
  description: The Metrics API from Cubist — 2 operation(s) for metrics.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Metrics
  properties:
  - type: OpenAPI
    url: openapi/cubist-metrics-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-mfa-api
  name: Cubist MFA API
  description: The MFA API from Cubist — 5 operation(s) for mfa.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - MFA
  properties:
  - type: OpenAPI
    url: openapi/cubist-mfa-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-misc-api
  name: Cubist Misc API
  description: The Misc API from Cubist — 1 operation(s) for misc.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags: []
  tags_raw:
  - Misc
  properties:
  - type: OpenAPI
    url: openapi/cubist-misc-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-mmi-api
  name: Cubist MMI API
  description: The MMI API from Cubist — 6 operation(s) for mmi.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - MMI
  properties:
  - type: OpenAPI
    url: openapi/cubist-mmi-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-org-api
  name: Cubist Org API
  description: The Org API from Cubist — 1 operation(s) for org.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Org
  properties:
  - type: OpenAPI
    url: openapi/cubist-org-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-orgs-api
  name: Cubist Orgs API
  description: The Orgs API from Cubist — 4 operation(s) for orgs.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Organization
  tags_raw:
  - Orgs
  properties:
  - type: OpenAPI
    url: openapi/cubist-orgs-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-policies-api
  name: Cubist Policies API
  description: The Policies API from Cubist — 11 operation(s) for policies.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Policies
  properties:
  - type: OpenAPI
    url: openapi/cubist-policies-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-role-access-tokens-api
  name: Cubist Role Access Tokens API
  description: The Role Access Tokens API from Cubist — 2 operation(s) for role access tokens.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Role Access Tokens
  properties:
  - type: OpenAPI
    url: openapi/cubist-role-access-tokens-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-roles-api
  name: Cubist Roles API
  description: The Roles API from Cubist — 7 operation(s) for roles.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Roles
  properties:
  - type: OpenAPI
    url: openapi/cubist-roles-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-rpc-api
  name: Cubist RPC API
  description: The RPC API from Cubist — 1 operation(s) for rpc.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - RPC
  properties:
  - type: OpenAPI
    url: openapi/cubist-rpc-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-sessions-api
  name: Cubist Sessions API
  description: The Sessions API from Cubist — 3 operation(s) for sessions.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Sessions
  properties:
  - type: OpenAPI
    url: openapi/cubist-sessions-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-signersession-api
  name: Cubist SignerSession API
  description: The SignerSession API from Cubist — 1 operation(s) for signersession.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - SignerSession
  properties:
  - type: OpenAPI
    url: openapi/cubist-signersession-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-signing-api
  name: Cubist Signing API
  description: The Signing API from Cubist — 21 operation(s) for signing.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Signing
  properties:
  - type: OpenAPI
    url: openapi/cubist-signing-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-user-api
  name: Cubist User API
  description: The User API from Cubist — 11 operation(s) for user.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - User
  properties:
  - type: OpenAPI
    url: openapi/cubist-user-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-user-export-api
  name: Cubist User Export API
  description: The User Export API from Cubist — 1 operation(s) for user export.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - User Export
  properties:
  - type: OpenAPI
    url: openapi/cubist-user-export-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-users-in-org-api
  name: Cubist Users In Org API
  description: The Users In Org API from Cubist — 9 operation(s) for users in org.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Users In Org
  properties:
  - type: OpenAPI
    url: openapi/cubist-users-in-org-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-users-in-role-api
  name: Cubist Users In Role API
  description: The Users In Role API from Cubist — 2 operation(s) for users in role.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - Users In Role
  properties:
  - type: OpenAPI
    url: openapi/cubist-users-in-role-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
- aid: cubist:cubist-oauth2-api
  name: Cubist O Auth2 API
  description: The OAuth2 API from Cubist — 7 operation(s) for oauth2.
  humanURL: https://cubist.dev/product-suite
  baseURL: https://prod.signer.cubist.dev
  tags:
  - OAuth
  - Authentication
  tags_raw:
  - OAuth2
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/cubist-oauth2-api-openapi.yml
  - type: Documentation
    url: https://cubist.dev/product-suite
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/cubist-capability-edges.yml
  name: Cubist Business Capability Map
- type: Overlay
  url: overlays/cubist-cubesigner-overlay.yaml
- type: Website
  url: https://cubist.dev
- type: Documentation
  url: https://cubist.dev/product-suite
- type: Blog
  url: https://cubist.dev/blog
- type: Support
  url: https://cubist.dev/contact
- type: GitHubOrganization
  url: https://github.com/cubist-labs
- type: TermsOfService
  url: https://cubist.dev/legal/terms-and-conditions
- type: PrivacyPolicy
  url: https://cubist.dev/legal/privacy-policy
- type: Security
  url: https://cubist.dev/legal/responsible-disclosure
- type: Compliance
  url: https://cubist.dev/product-security
- type: TrustCenter
  url: https://cubist.dev/information-security
- type: Authentication
  url: authentication/cubist-authentication.yml
- type: OAuthScopes
  url: scopes/cubist-scopes.yml
- type: Conventions
  url: conventions/cubist-conventions.yml
- type: ErrorCatalog
  url: errors/cubist-error-codes.yml
- type: DataModel
  url: data-model/cubist-data-model.yml
- type: Lifecycle
  url: lifecycle/cubist-lifecycle.yml
- type: Conformance
  url: conformance/cubist-conformance.yml
- type: Sandbox
  url: sandbox/cubist-sandbox.yml
- type: CLI
  url: cli/cubist-cli.yml
- type: Components
  url: components/cubist-components.yml
- type: Packages
  url: packages/cubist-packages.yml
- type: SDKs
  url: packages/cubist-packages.yml
- type: X-MCPServerCandidate
  url: mcp/cubist-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: AgentSkill
  url: skills/cubist-create-key-and-sign-evm.md
- type: AgentSkill
  url: skills/cubist-scoped-role-with-policy.md
- type: LLMsTxt
  url: llms/cubist-llms.txt
- type: AgenticAccess
  url: agentic-access/cubist-agentic-access.yml
- type: DomainSecurity
  url: security/cubist-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/cubist-vulnerability-disclosure.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Cubist API — frequently asked questions

Does Cubist have an API?

Yes. APIs.io lists 30 APIs from Cubist, including Cubist Account API, Cubist Accounts API and Cubist Audit API, and 27 more.

Is there an OpenAPI specification for the Cubist API?

Yes. APIs.io indexes 30 OpenAPI specifications for Cubist, each linked for download from this page.

How do I authenticate with the Cubist API?

Cubist uses bearer-token authentication (oidc-exchange/session-token · 2 schemes). The details are profiled on APIs.io as Cubist Authentication.

Is the Cubist API ready for AI agents?

Cubist has a Kin Score of 44.9 out of 100 (developing) and an Agent Readiness score of 35.3 (agent-ready), 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

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How their score was established 
curl "https://apis.io/api/v1/providers/cubist/evidence"

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