openapi: 3.1.0
info:
  title: "NEAR Protocol RPC: Get chunk by hash"
  description: Fetch a single chunk's transactions and receipts by its Base58 content hash.
  version: 1.0.0
servers:
  - url: https://rpc.mainnet.fastnear.com
    description: Mainnet
  - url: https://rpc.testnet.fastnear.com
    description: Testnet
  - url: https://archival-rpc.mainnet.fastnear.com
    description: Mainnet Archival
  - url: https://archival-rpc.testnet.fastnear.com
    description: Testnet Archival
paths:
  /:
    post:
      operationId: chunk_by_hash
      summary: Get chunk by hash
      description: Fetch a single chunk's transactions and receipts by its Base58 content hash.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - jsonrpc
                - id
                - method
                - params
              properties:
                jsonrpc:
                  type: string
                  enum:
                    - "2.0"
                id:
                  type: string
                  example: fastnear
                method:
                  type: string
                  enum:
                    - chunk
                params:
                  type: object
                  required:
                    - chunk_id
                  properties:
                    chunk_id:
                      type: string
                      description: Base58-encoded chunk hash
            examples:
              mainnet:
                summary: Mainnet Chunk Example
                value:
                  jsonrpc: "2.0"
                  id: fastnear
                  method: chunk
                  params:
                    chunk_id: 349Wr5HMm2Bvyy8GuhExAZ4F353tXCChx1FfAsYnQTAn
              testnet:
                summary: Testnet Chunk Example
                value:
                  jsonrpc: "2.0"
                  id: fastnear
                  method: chunk
                  params:
                    chunk_id: FU9wVPLRwa34SSwA9KP83QLSni2bqXgqVijaejnqX4iv
      responses:
        "200":
          description: Successful response
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/JsonRpcResponse"
        "403":
          description: The supplied API key was not recognized.
          content:
            text/plain:
              schema:
                type: string
              example: Invalid API key
security:
  - {}
  - BearerAuth: []
  - ApiKeyAuth: []
components:
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: "FastNEAR API key as an `Authorization: Bearer` header. Preferred for backends, workers, and proxies because it keeps the key out of URLs and logs."
    ApiKeyAuth:
      type: apiKey
      in: query
      name: apiKey
      description: FastNEAR API key as the `apiKey` query parameter. Handy for curl or clients that cannot set headers, but the key can end up in URLs, logs, and shell history.
  schemas:
    JsonRpcResponse:
      type: object
      required:
        - jsonrpc
        - id
      properties:
        jsonrpc:
          type: string
          enum:
            - "2.0"
        id:
          oneOf:
            - type: string
            - type: number
        result:
          type: object
          properties:
            author:
              type: string
              description: NEAR account ID
            header:
              type: object
              description: Contains main info about the chunk.
              properties:
                balance_burnt:
                  type: string
                  description: Amount in yoctoNEAR
                bandwidth_requests:
                  type:
                    - object
                    - "null"
                  description: One of multiple possible types
                chunk_hash:
                  type: string
                  description: Base58-encoded hash
                congestion_info:
                  type:
                    - object
                    - "null"
                  description: Stores the congestion level of a shard. More info about congestion [here](https://near.github.io/nearcore/architecture/how/receipt-congestion.html?highlight=congestion#receipt-congestion)
                encoded_length:
                  type: integer
                  format: uint64
                  minimum: 0
                encoded_merkle_root:
                  type: string
                  description: Base58-encoded hash
                gas_limit:
                  type: string
                  description: Gas amount
                gas_used:
                  type: string
                  description: Gas amount
                height_created:
                  type: integer
                  format: uint64
                  minimum: 0
                height_included:
                  type: integer
                  format: uint64
                  minimum: 0
                outcome_root:
                  type: string
                  description: Base58-encoded hash
                outgoing_receipts_root:
                  type: string
                  description: Base58-encoded hash
                prev_block_hash:
                  type: string
                  description: Base58-encoded hash
                prev_state_root:
                  type: string
                  description: Base58-encoded hash
                rent_paid:
                  type: string
                  description: Amount in yoctoNEAR
                  default: "0"
                shard_id:
                  type: integer
                  description: Shard identifier
                signature:
                  type: string
                  description: Base58-encoded cryptographic signature
                tx_root:
                  type: string
                  description: Base58-encoded hash
                validator_proposals:
                  type: array
                  items:
                    type: object
                validator_reward:
                  type: string
                  description: Amount in yoctoNEAR
                  default: "0"
              required:
                - chunk_hash
                - prev_block_hash
                - outcome_root
                - prev_state_root
                - encoded_merkle_root
                - encoded_length
                - height_created
                - height_included
                - shard_id
                - gas_used
                - gas_limit
                - balance_burnt
                - outgoing_receipts_root
                - tx_root
                - validator_proposals
                - signature
            receipts:
              type: array
              items:
                type: object
            transactions:
              type: array
              items:
                type: object
          required:
            - author
            - header
            - transactions
            - receipts
        error:
          type: object
          properties:
            code:
              type: integer
            message:
              type: string
            data:
              type: object