# Kadena block API

**Canonical:** https://apis.io/apis/kadena/kadena-block-api/  
**Provider:** Kadena — https://apis.io/providers/kadena/  
**Base URL:** https://api.chainweb.com/chainweb/0.0/mainnet01  
**Documentation:** https://docs.kadena.io/api/chainweb-api

Kadena block API is one of 16 APIs that [Kadena](https://apis.io/providers/kadena/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Block. The published artifact set on APIs.io includes an OpenAPI specification and an API reference.

These endpoints return whole blocks, headers and payloads, from the chain database. Generally, blocks are returned in ascending order and include orphaned blocks. For only querying blocks that are included in the winning branch of the chain the `branch` endpoints can be used, which return blocks in descending order starting from the leafs of branches of the block chain. Blocks are returned in only one format, with block headers and payloads in JSON encoding.

## Machine-readable artifacts (3)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/kadena/refs/heads/main/openapi/kadena-block-api-openapi.yml
- **APIReference** — https://kadena-io.github.io/chainweb-openapi/
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/kadena/refs/heads/main/apis.yml

## Other Kadena APIs (12)

- [Kadena blockhash API](https://apis.io/apis/kadena/kadena-blockhash-api/)
- [Kadena config API](https://apis.io/apis/kadena/kadena-config-api/)
- [Kadena cut API](https://apis.io/apis/kadena/kadena-cut-api/)
- [Kadena endpoint-listen API](https://apis.io/apis/kadena/kadena-endpoint-listen-api/)
- [Kadena endpoint-local API](https://apis.io/apis/kadena/kadena-endpoint-local-api/)
- [Kadena endpoint-poll API](https://apis.io/apis/kadena/kadena-endpoint-poll-api/)
- [Kadena endpoint-private API](https://apis.io/apis/kadena/kadena-endpoint-private-api/)
- [Kadena endpoint-send API](https://apis.io/apis/kadena/kadena-endpoint-send-api/)
- [Kadena endpoint-spv API](https://apis.io/apis/kadena/kadena-endpoint-spv-api/)
- [Kadena header API](https://apis.io/apis/kadena/kadena-header-api/)
- [Kadena mempool API](https://apis.io/apis/kadena/kadena-mempool-api/)
- [Kadena mining API](https://apis.io/apis/kadena/kadena-mining-api/)

## Tags

Block

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