chore: deprecate substrate-api-sidecar in favor of polkadot-rest-api#1951
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filvecchiato
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Apr 23, 2026
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Just a comment otherwise good to go
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| **`substrate-api-sidecar` is deprecated in favor of [`polkadot-rest-api`](https://github.com/paritytech/polkadot-rest-api).** | ||
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| `polkadot-rest-api` is a ground-up Rust rewrite built on [`subxt`](https://github.com/paritytech/subxt), with 1:1 API compatibility, stable memory under sustained load, significantly lower latency and higher throughput, and native SCALE decoding via `parity-scale-codec`. |
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Is it worth metioning the /v1 in the endpoints?
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I mentioned it right after the API compatibility in a parenthesis. Wdyt? Is it enough to get users attention?
TarikGul
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Apr 23, 2026
Imod7
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filvecchiato
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Apr 27, 2026
- CoretimeAssignmentProvider pallet was removed from the relay chain runtime in polkadot-sdk PR 10184
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Description
Deprecating substrate-api-sidecar in favor of polkadot-rest-api.
Tasks
README.mdsrc/App.tsCHANGELOG.mdfor the next releaseDockerfile.README.mdfeature-request.mdandreport-bug.md)Out of scope for this PR
This PR contains only file edits inside the repository. Two further actions remain to fully publish the deprecation, both of which require platform credentials and cannot be performed in source control:
@substrate/api-sidecarmust runnpm deprecate @substrate/api-sidecar@"*" "Deprecated in favor of polkadot-rest-api (Rust rewrite, 1:1 API-compatible). Migrate: https://github.com/paritytech/polkadot-rest-api".parity/substrate-api-sidecarmust paste the deprecationbanner into the Docker Hub Overview field manually. The repo has no auto-sync action, so the
Dockerfile.README.mdchange in this PR does not propagate.