Polkadot

name: Polkadot
description: Polkadot is a multi-chain blockchain network that enables interoperability between specialized blockchains called
  parachains. Developer APIs are provided through Subscan (a multi-chain block explorer with a hosted HTTP API) and the Substrate
  API Sidecar (a REST interface for Polkadot SDK-based chains), enabling queries against extrinsics, events, accounts, blocks,
  staking data, and parachain state on Polkadot, Kusama, and related networks.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- Blockchain
- Polkadot
- Parachain
- Substrate
- Crypto
- Web3
apis:
- name: Subscan API
  description: Subscan provides a hosted HTTP API for querying indexed on-chain data across more than 90 Substrate-based networks
    including Polkadot and Kusama. Endpoints cover blocks, extrinsics, events, accounts, staking, tokens, and parachain data.
    Each network has a dedicated base URL following the pattern https://{network}.api.subscan.io. All requests require an
    API key obtained from pro.subscan.io.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://support.subscan.io/
  baseURL: https://polkadot.api.subscan.io
  tags:
  - Blockchain
  - Polkadot
  - Kusama
  - Extrinsics
  - Events
  - Accounts
  - Blocks
  - Staking
  - Parachain
  properties:
  - type: Documentation
    url: https://support.subscan.io/
  - type: PostmanCollection
    url: https://documenter.getpostman.com/view/1618960/TVCe1oRU
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/openapi/subscan-swagger.yaml
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/plans/subscan.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/rate-limits/subscan.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/finops/subscan.yml
  contact:
  - FN: Subscan API Support
    email: api@subscan.io
- name: Substrate API Sidecar
  description: The Substrate API Sidecar is an open-source REST service maintained by Parity Technologies that provides a
    RESTful interface for interacting with Polkadot SDK-based blockchains. It covers blocks, accounts (balances, assets, foreign
    assets), transactions (dry-run, parse, material), staking, and parachain/coretime data. Parity provides public hosted
    instances for Polkadot, Kusama, Polkadot Asset Hub, and Kusama Asset Hub. Self-hosting is recommended for production use.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://paritytech.github.io/substrate-api-sidecar/docsv2/
  baseURL: https://polkadot-public-sidecar.parity-chains.parity.io
  tags:
  - Blockchain
  - Polkadot
  - Kusama
  - Accounts
  - Blocks
  - Transactions
  - Staking
  - Parachain
  - Open Source
  properties:
  - type: Documentation
    url: https://docs.polkadot.com/chain-interactions/query-data/query-rest/
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/openapi/substrate-api-sidecar-openapi.yaml
  - type: GitHubRepository
    url: https://github.com/paritytech/substrate-api-sidecar
  contact:
  - FN: Parity Technologies
    url: https://www.parity.io/
- name: Polkadot REST API
  description: The Polkadot REST API is a Rust rewrite of the Substrate API Sidecar, maintained by Parity Technologies, offering
    REST endpoints for blocks, transactions (dry-run, parse, material), accounts, staking, and parachain/coretime data. It
    targets production deployments requiring high throughput and provides OpenAPI specifications for all endpoints.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://github.com/paritytech/polkadot-rest-api
  baseURL: https://github.com/paritytech/polkadot-rest-api
  tags:
  - Blockchain
  - Polkadot
  - Transactions
  - Blocks
  - Staking
  - Parachain
  - Rust
  - Open Source
  properties:
  - type: Documentation
    url: https://github.com/paritytech/polkadot-rest-api
  - type: OpenAPI
    url: https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/openapi/polkadot-rest-api-openapi.json
  - type: GitHubRepository
    url: https://github.com/paritytech/polkadot-rest-api
  contact:
  - FN: Parity Technologies
    url: https://www.parity.io/
common:
- type: Website
  url: https://polkadot.com/
- type: Developer
  url: https://docs.polkadot.com/
- type: Blog
  url: https://polkadot.com/blog
- type: GitHub
  url: https://github.com/paritytech
- type: StatusPage
  url: https://subscan.statuspage.io/
- type: TermsOfService
  url: https://polkadot.com/terms-of-use
- type: PrivacyPolicy
  url: https://polkadot.com/privacy-policy
maintainers:
- FN: API Evangelist
  email: info@apievangelist.com