sp-api
| Crates.io | sp-api |
| lib.rs | sp-api |
| version | 38.0.0 |
| created_at | 2020-02-27 00:54:23.499681+00 |
| updated_at | 2025-08-01 12:13:50.494223+00 |
| description | Substrate runtime api primitives |
| homepage | https://paritytech.github.io/polkadot-sdk/ |
| repository | https://github.com/paritytech/polkadot-sdk.git |
| max_upload_size | |
| id | 212910 |
| size | 124,574 |
Parity Crate Owner (parity-crate-owner)
documentation
README
Substrate runtime api
The Substrate runtime api is the crucial interface between the node and the runtime.
Every call that goes into the runtime is done with a runtime api. The runtime apis are not fixed.
Every Substrate user can define its own apis with
decl_runtime_apis and implement them in
the runtime with impl_runtime_apis.
Every Substrate runtime needs to implement the [Core] runtime api. This api provides the basic
functionality that every runtime needs to export.
Besides the macros and the [Core] runtime api, this crates provides the [Metadata] runtime
api, the [ApiExt] trait, the [CallApiAt] trait and the [ConstructRuntimeApi] trait.
On a meta level this implies, the client calls the generated API from the client perspective.
License: Apache-2.0