# CKB JSON-RPC API

**Canonical:** https://apis.io/apis/nervos/ckb-json-rpc-api/  
**Provider:** Nervos — https://apis.io/providers/nervos/  
**Base URL:** https://mainnet.ckb.dev/  
**Documentation:** https://docs.nervos.org/docs/getting-started/rpcs

CKB JSON-RPC API is published by [Nervos](https://apis.io/providers/nervos/) on the [APIs.io](https://apis.io/) network. Tagged areas include JSON-RPC, Blockchain, and Web3. The published artifact set on APIs.io includes API documentation, an API reference, and authentication docs.

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.

## Machine-readable artifacts (5)

- **Documentation** — https://docs.nervos.org/docs/getting-started/rpcs
- **APIReference** — https://github.com/nervosnetwork/ckb/blob/master/rpc/README.md
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/nervos/refs/heads/main/authentication/nervos-authentication.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/nervos/refs/heads/main/conventions/nervos-conventions.yml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/nervos/refs/heads/main/apis.yml

## Tags

JSON-RPC, Blockchain, Web3

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/nervos/ckb-json-rpc-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/nervos/.