Clusters website screenshot

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
52.0/100 developing ▬ flat Agent 69/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
6 APIs 1 MCP Servers
CompanyInfrastructureIdentityNamingBlockchainWeb3WalletMultichainResolver

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 52.0/100 · developing
Contract Quality 14.2 / 25
Developer Ergonomics 15.2 / 20
Commercial Clarity 6.8 / 20
Operational Transparency 3.1 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 69/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 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
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.

Clusters Authentication API

Wallet-signature authentication for write operations

Clusters Clusters API

Read and create clusters (profiles bundling wallets)

Clusters Communities API

Community cluster name availability and registration

Clusters Events API

Replayable historical event feed

Clusters Names API

Resolve addresses to cluster/wallet names and back

Clusters Registration API

Check availability and build registration transaction data

Arazzo Workflows 3

Multi-step API workflows described with the Arazzo specification.

_Index

ARAZZO

Check availability and build Clusters registration data

Check whether a name is available, then build the EVM registration transaction data to sign.

ARAZZO

Resolve a Clusters name to a wallet and profile

Bulk-resolve a cluster name to its address, then read the full cluster profile.

ARAZZO

MCP Servers 1

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

clusters-mcp.yml

MCP SERVER

Security Posture 3

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

Clusters Authentication

apiKey/http · 2 schemes

SECURITY

Clusters Domain Security

TLSv1.3 · HSTS

SECURITY

Clusters Vulnerability Disclosure

disclosure policy published

SECURITY

Agentic Access 1

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

Clusters Agentic Access

14 operations · 7 acting

14 operations · 7 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Sandbox
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
AgenticAccess
 LLMsTxt
LLMsTxt
 WellKnown
WellKnown
 MCPServer
MCPServer
 AgentSkill
AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conventions
Conventions
 DataModel
DataModel
 Arazzo
Arazzo
 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)

apis.yml Raw ↑ 
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: '0.20'
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
- 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:
  - 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:
  - 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:
  - 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