Polkadot

Polkadot Transaction API

Transaction submission, fee estimation, and construction material

GitHub OpenAPI

Operations 13

POST /v1/transaction Submit transaction #
POST /v1/transaction/dry-run Dry run transaction #
POST /v1/transaction/fee-estimate Estimate transaction fee #
GET /v1/transaction/material Transaction construction material #
GET /v1/transaction/material/{metadataVersion} Transaction material with versioned metadata #
POST /v1/transaction/metadata-blob Generate metadata blob #
POST /v1/transaction/parse Parse transaction #
POST /transaction Submit a transaction to the node's transaction pool #
POST /transaction/dry-run Dry run an extrinsic #
POST /transaction/fee-estimate Receive a fee estimate for a transaction #
GET /transaction/material Get all the network information needed to construct a transaction offline #
GET /transaction/material/{metadataVersion} Get all the network information needed to construct a transaction offline and… #
POST /transaction/metadata-blob Get the metadata blob for offline signers #

Documentation

📖
Documentation
https://support.subscan.io/
📖
RateLimits
https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/rate-limits/subscan.yml
📖
Documentation
https://docs.polkadot.com/chain-interactions/query-data/query-rest/
📖
Documentation
https://github.com/paritytech/polkadot-rest-api

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/openapi/polkadot-transaction-api-openapi.yml

SDKs

📦
GitHubRepository
https://github.com/paritytech/substrate-api-sidecar
📦
GitHubRepository
https://github.com/paritytech/polkadot-rest-api

Other Resources

🔗
PostmanCollection
https://documenter.getpostman.com/view/1618960/TVCe1oRU
🔗
Plans
https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/plans/subscan.yml
🔗
FinOps
https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/finops/subscan.yml

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OpenAPI Specification

polkadot-transaction-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: Polkadot Transaction API
  version: '1.0'
  description: 'Operations tagged transaction across 2 of this provider''s published API definitions: polkadot-rest-api-openapi.json, substrate-api-sidecar-openapi.yaml. Each path carries the servers of the definition it was published in.'
servers:
- url: http://localhost:8080/v1
  description: Localhost
- url: https://polkadot-public-sidecar.parity-chains.parity.io/
  description: Polkadot Parity public sidecar
- url: https://kusama-public-sidecar.parity-chains.parity.io/
  description: Kusama Parity public sidecar
- url: https://polkadot-asset-hub-public-sidecar.parity-chains.parity.io/
  description: Polkadot Asset Hub Parity public sidecar
- url: https://kusama-asset-hub-public-sidecar.parity-chains.parity.io/
  description: Kusama Asset Hub Parity public sidecar
- url: http://localhost:8080
  description: Localhost
tags:


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# Full source: https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/openapi/polkadot-transaction-api-openapi.yml