# Kadena payload API

**Canonical:** https://apis.io/apis/kadena/kadena-payload-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 payload 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 Payload. The published artifact set on APIs.io includes an OpenAPI specification and an API reference.

Raw literal Block Payloads in the form in which they are stored on the chain. By default only the payload data is returned which is sufficient for validating the blockchain Merkle Tree. It is also sufficient as input to Pact for executing the Pact transactions of the block and recomputing the outputs. It is also possible to query the transaction outputs along with the payload data.

## Machine-readable artifacts (2)

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

## Other Kadena APIs (12)

- [Kadena block API](https://apis.io/apis/kadena/kadena-block-api/)
- [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/)

## Tags

Payload

---

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