Nervos

Nervos is the organization behind Nervos CKB (Common Knowledge Base), a proof-of-work layer 1 blockchain built around the Cell Model - a flexible, UTXO-like state model - and CKB-VM, a RISC-V virtual machine for on-chain scripts. Developers interact with the network through a public JSON-RPC 2.0 API (HTTP, TCP, and WebSocket subscriptions), official SDKs for JavaScript/TypeScript (CCC), Rust, Go, and Java, and CLI tooling (ckb-cli, OffCKB). The docs surface first-class AI resources including an llms.txt map, agent instructions, packaged CKB Dev Skills, and a CKB AI MCP server. Nervos was surfaced as a portfolio company of Multicoin Capital and enriched from its public developer documentation.

Nervos publishes 1 API on the APIs.io network. Tagged areas include Company, Crypto Web3, Blockchain, Layer 1, and JSON-RPC.

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

Nervos’ developer surface includes documentation, getting-started guide, API reference, changelog, CLI, authentication, sandbox, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub
37.8/100 thin ▬ flat Agent 35/100 agent ready library Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
1 APIs 1 MCP Servers
CompanyCrypto Web3BlockchainLayer 1JSON-RPCSmart ContractsWeb3 InfrastructureDeveloper Tools

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0
Composite quality — 37.8/100 · thin
Contract Quality 8.3 / 21
Developer Ergonomics 11.7 / 17
Access Clarity 0.0 / 17
Operational Transparency 3.8 / 11
Contract Governance 1.9 / 10
Discoverability 6.4 / 9
Regulatory Posture 2.5 / 15
Agent readiness — 35/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
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 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 Horizontal (data, software, accessibility, platform) 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.
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/. 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/nervos: 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 1

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

CKB JSON-RPC API

Public JSON-RPC 2.0 interface to Nervos CKB nodes for querying chain state (blocks, transactions, cells), submitting signed transactions, and subscribing to new-tip events over ...

MCP Servers 1

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

Nervos MCP Server

MCP SERVER

Event Specifications 1

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

Nervos Ckb Subscriptions

ASYNCAPI

Security Posture 2

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

Nervos Authentication

none · 0 schemes

SECURITY

Nervos Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted
 Sandbox
Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill
 WellKnown
WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Lifecycle
Lifecycle
 Conformance
Conformance
 ErrorCatalog
ErrorCatalog
 Webhooks
Webhooks

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs
 CLI
CLI

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 3

Status, limits, changes, and where to get help

ChangeLog
ChangeLog
 Deprecation
Deprecation
 ChangeLog
ChangeLog

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: nervos
deliveryModel:
  model: library
  open_source: false
  commercial: false
  callable_host: false
  label: Library · distributed through package registries, no callable service
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nervos.png
name: Nervos
description: Nervos is the organization behind Nervos CKB (Common Knowledge Base), a proof-of-work layer 1 blockchain built
  around the Cell Model - a flexible, UTXO-like state model - and CKB-VM, a RISC-V virtual machine for on-chain scripts. Developers
  interact with the network through a public JSON-RPC 2.0 API (HTTP, TCP, and WebSocket subscriptions), official SDKs for
  JavaScript/TypeScript (CCC), Rust, Go, and Java, and CLI tooling (ckb-cli, OffCKB). The docs surface first-class AI resources
  including an llms.txt map, agent instructions, packaged CKB Dev Skills, and a CKB AI MCP server. Nervos was surfaced as
  a portfolio company of Multicoin Capital and enriched from its public developer documentation.
url: https://raw.githubusercontent.com/api-evangelist/nervos/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- multicoin-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Crypto Web3
- Blockchain
- Layer 1
- JSON-RPC
- Smart Contracts
- Web3 Infrastructure
- Developer Tools
apis:
- name: CKB JSON-RPC API
  description: Public JSON-RPC 2.0 interface to Nervos CKB nodes for querying chain state (blocks, transactions, cells), submitting
    signed transactions, and subscribing to new-tip events over WebSocket. Unauthenticated on public endpoints; transaction
    authorization is enforced on-chain by lock scripts and signatures.
  humanURL: https://docs.nervos.org/docs/getting-started/rpcs
  baseURL: https://mainnet.ckb.dev/
  tags:
  - JSON-RPC
  - Blockchain
  - Web3
  properties:
  - type: Documentation
    url: https://docs.nervos.org/docs/getting-started/rpcs
  - type: APIReference
    url: https://github.com/nervosnetwork/ckb/blob/master/rpc/README.md
  - type: Authentication
    url: authentication/nervos-authentication.yml
  - type: Conventions
    url: conventions/nervos-conventions.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://nervos.org
- type: Documentation
  url: https://docs.nervos.org/
- type: GettingStarted
  url: https://docs.nervos.org/docs/getting-started/quick-start
- type: APIReference
  url: https://github.com/nervosnetwork/ckb/blob/master/rpc/README.md
- type: GitHubOrganization
  url: https://github.com/nervosnetwork
- type: ChangeLog
  url: https://github.com/nervosnetwork/ckb/releases
- type: Packages
  url: packages/nervos-packages.yml
- type: SDKs
  url: packages/nervos-packages.yml
- type: CLI
  url: cli/nervos-cli.yml
- type: MCPServer
  url: mcp/nervos-mcp.yml
- type: LLMsTxt
  url: llms/nervos-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: Authentication
  url: authentication/nervos-authentication.yml
- type: Conventions
  url: conventions/nervos-conventions.yml
- type: Lifecycle
  url: lifecycle/nervos-lifecycle.yml
- type: Deprecation
  url: lifecycle/nervos-lifecycle.yml
- type: Conformance
  url: conformance/nervos-conformance.yml
- type: Sandbox
  url: sandbox/nervos-sandbox.yml
- type: WellKnown
  url: well-known/nervos-well-known.yml
- type: DomainSecurity
  url: security/nervos-domain-security.yml
- type: ErrorCatalog
  url: errors/nervos-error-codes.yml
- type: Webhooks
  url: asyncapi/nervos-ckb-subscriptions.yml
- type: ChangeLog
  name: CKB node releases (structured)
  url: changelog/nervos-changelog.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 3
  pass: local-v1

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