Clusters

Clusters is a multichain namespace and identity service that gives users a single universal name across blockchain ecosystems instead of a separate domain per chain. A Clusters name uses the format username/wallet (for example username/eth or username/sol) to bundle many wallets — EVM chains, Solana, and more — under one hierarchical, human-readable profile. The Clusters v1 REST API resolves an address to its cluster and wallet name and back, reads full cluster profiles, checks name availability, produces on-chain registration transaction data for EVM and Solana, registers community cluster names, and exposes a replayable historical event feed for permissionless indexing. Reads are public; wallet management and registration require a wallet-signature bearer token, and an optional API key raises rate limits. The protocol uses a hub-and-spoke model bridged with LayerZero v2 and replicates metadata to Arweave for data availability. Backed by Electric Capital.

Clusters publishes 6 APIs on the APIs.io network, including Authentication API, Clusters API, Communities API, and 3 more. Tagged areas include Company, Infrastructure, Identity, Naming, and Blockchain.

Clusters’ developer surface includes authentication, documentation, API reference, getting-started guide, signup flow, engineering blog, sandbox, and 24 more developer resources.

🌐 Visit website 📡 Source on GitHub

38.4/100 thin ▬ flat Agent 34/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

AccessSelf serve

6 APIs 1 MCP Servers

CompanyInfrastructureIdentityNamingBlockchainWeb3WalletsMulti-ChainResolver

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 38.4/100 · thin

Contract Quality 11.9 / 21

Developer Ergonomics 9.6 / 17

Access Clarity 0.0 / 17

Operational Transparency 1.2 / 11

Contract Governance 1.7 / 10

Discoverability 7.9 / 9

Regulatory Posture 5.4 / 15

Agent readiness — 34/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

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.

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/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/clusters: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 6

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

MCP Servers 1

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

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

SignUp

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

LLMsTxt

WellKnown

MCPServer

AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

Lifecycle

Conventions

DataModel

Arazzo

Arazzo

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

SDKs

SDKs

Packages

Packages

Access & Security 4

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

Deprecation

Deprecation

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

Overlay

Overlay

Source (apis.yml)

aid: clusters
name: Clusters
description: Clusters is a multichain namespace and identity service that gives users a single universal name across blockchain
  ecosystems instead of a separate domain per chain. A Clusters name uses the format username/wallet (for example username/eth
  or username/sol) to bundle many wallets — EVM chains, Solana, and more — under one hierarchical, human-readable profile.
  The Clusters v1 REST API resolves an address to its cluster and wallet name and back, reads full cluster profiles, checks
  name availability, produces on-chain registration transaction data for EVM and Solana, registers community cluster names,
  and exposes a replayable historical event feed for permissionless indexing. Reads are public; wallet management and registration
  require a wallet-signature bearer token, and an optional API key raises rate limits. The protocol uses a hub-and-spoke model
  bridged with LayerZero v2 and replicates metadata to Arweave for data availability. Backed by Electric Capital.
url: https://raw.githubusercontent.com/api-evangelist/clusters/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- electric-capital
x-tier: profiled
x-tier-reason: enriched-from-public-docs
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
image: https://clusters.xyz/assets/images/apple/apple-touch-icon.png
tags:
- Company
- Infrastructure
- Identity
- Naming
- Blockchain
- Web3
- Wallets
- Multi-Chain
- Resolver
tags_raw:
- Company
- Infrastructure
- Identity
- Naming
- Blockchain
- Web3
- Wallet
- Multichain
- Resolver
apis:
- aid: clusters:clusters-authentication-api
  name: Clusters Authentication API
  description: Wallet-signature authentication for write operations
  humanURL: https://docs.clusters.xyz/getting-started/api/v1
  baseURL: https://api.clusters.xyz/v1
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/clusters-authentication-api-openapi.yml
  - type: APIReference
    url: https://docs.clusters.xyz/getting-started/api/v1
- aid: clusters:clusters-clusters-api
  name: Clusters Clusters API
  description: Read and create clusters (profiles bundling wallets)
  humanURL: https://docs.clusters.xyz/getting-started/api/v1
  baseURL: https://api.clusters.xyz/v1
  tags:
  - Cluster
  tags_raw:
  - Clusters
  properties:
  - type: OpenAPI
    url: openapi/clusters-clusters-api-openapi.yml
  - type: APIReference
    url: https://docs.clusters.xyz/getting-started/api/v1
- aid: clusters:clusters-communities-api
  name: Clusters Communities API
  description: Community cluster name availability and registration
  humanURL: https://docs.clusters.xyz/getting-started/api/v1
  baseURL: https://api.clusters.xyz/v1
  tags:
  - Communities
  properties:
  - type: OpenAPI
    url: openapi/clusters-communities-api-openapi.yml
  - type: APIReference
    url: https://docs.clusters.xyz/getting-started/api/v1
- aid: clusters:clusters-events-api
  name: Clusters Events API
  description: Replayable historical event feed
  humanURL: https://docs.clusters.xyz/getting-started/api/v1
  baseURL: https://api.clusters.xyz/v1
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/clusters-events-api-openapi.yml
  - type: APIReference
    url: https://docs.clusters.xyz/getting-started/api/v1
- aid: clusters:clusters-names-api
  name: Clusters Names API
  description: Resolve addresses to cluster/wallet names and back
  humanURL: https://docs.clusters.xyz/getting-started/api/v1
  baseURL: https://api.clusters.xyz/v1
  tags:
  - Name
  tags_raw:
  - Names
  properties:
  - type: OpenAPI
    url: openapi/clusters-names-api-openapi.yml
  - type: APIReference
    url: https://docs.clusters.xyz/getting-started/api/v1
- aid: clusters:clusters-registration-api
  name: Clusters Registration API
  description: Check availability and build registration transaction data
  humanURL: https://docs.clusters.xyz/getting-started/api/v1
  baseURL: https://api.clusters.xyz/v1
  tags:
  - Registration
  properties:
  - type: OpenAPI
    url: openapi/clusters-registration-api-openapi.yml
  - type: APIReference
    url: https://docs.clusters.xyz/getting-started/api/v1
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: VulnerabilityDisclosure
  url: security/clusters-vulnerability-disclosure.yml
- type: Security
  url: https://clusters.xyz/vulnerability-disclosure
- type: DomainSecurity
  url: security/clusters-domain-security.yml
- type: AgenticAccess
  url: agentic-access/clusters-agentic-access.yml
- type: Authentication
  url: authentication/clusters-authentication.yml
- type: Website
  url: https://clusters.xyz/
- type: DeveloperPortal
  url: https://clusters.xyz/developer
- type: Documentation
  url: https://docs.clusters.xyz/
- type: APIReference
  url: https://docs.clusters.xyz/getting-started/api/v1
- type: GettingStarted
  url: https://docs.clusters.xyz/getting-started/javascript
- type: SignUp
  url: https://clusters.xyz/developer
- type: GitHubOrganization
  url: https://github.com/clustersxyz
- type: Blog
  url: https://clusters.xyz/blog
- type: TermsOfService
  url: https://clusters.xyz/terms
- type: PrivacyPolicy
  url: https://clusters.xyz/privacy
- type: SDKs
  url: packages/clusters-packages.yml
- type: Packages
  url: packages/clusters-packages.yml
- type: LLMsTxt
  url: llms/clusters-llms.txt
- type: WellKnown
  url: well-known/clusters-well-known.yml
- type: MCPServer
  url: mcp/clusters-mcp.yml
- type: Overlay
  url: overlays/clusters-v1-overlay.yaml
- type: Conformance
  url: conformance/clusters-conformance.yml
- type: ErrorCatalog
  url: errors/clusters-problem-types.yml
- type: Lifecycle
  url: lifecycle/clusters-lifecycle.yml
- type: Deprecation
  url: lifecycle/clusters-lifecycle.yml
- type: Conventions
  url: conventions/clusters-conventions.yml
- type: DataModel
  url: data-model/clusters-data-model.yml
- type: Sandbox
  url: sandbox/clusters-sandbox.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Arazzo
  name: Resolve a Clusters name to a wallet and profile
  url: arazzo/clusters-resolve-name.yml
- type: Arazzo
  name: Check availability and build Clusters registration data
  url: arazzo/clusters-register-name.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Clusters

Kin Score

APIs 6

Clusters Authentication API

Clusters Clusters API

Clusters Communities API

Clusters Events API

Clusters Names API

Clusters Registration API

Open Collections 7

API Collection

Clusters Authentication API

Authentication Clusters API

Clusters Authentication Communities API

Clusters Authentication Events API

Clusters Authentication Names API

Clusters Authentication Registration API

Arazzo Workflows 2

Check availability and build Clusters registration data

Resolve a Clusters name to a wallet and profile

MCP Servers 1

Clusters MCP Server

Security Posture 3

Clusters Authentication

Clusters Domain Security

Clusters Vulnerability Disclosure

Agentic Access 1

Clusters Agentic Access

Resources