EigenDA Streaming Surface

asyncapi: 3.0.0
info:
  title: EigenDA Streaming Surface
  version: '1.0'
  description: >-
    Bidirectional gRPC streaming surface exposed by the EigenDA v1 Disperser.
    EigenDA is the data-availability service secured by EigenLayer restakers;
    the Disperser is the consumer-facing entry point used by rollups and other
    blob producers to post data into EigenDA. Of the public Disperser RPCs,
    only DisperseBlobAuthenticated is a streaming RPC - it is a bidirectional
    stream that implements a sign-and-verify handshake before the disperser
    accepts a blob. The other v1 Disperser RPCs (DisperseBlob, GetBlobStatus,
    RetrieveBlob) are unary and not modeled here. The v2 Disperser, the Relay
    service, and the Node service are marked Experimental in the EigenDA proto
    README and the project states they are not deployed to any public
    environment, so they are not modeled here either. The Retriever service is
    documented as primarily for operator/internal retrieval paths and exposes
    only unary RPCs.
  contact:
    name: EigenDA
    url: https://docs.eigencloud.xyz/products/eigenda/
servers:
  mainnet:
    host: disperser.eigenda.xyz:443
    protocol: grpc
    description: EigenDA mainnet Disperser gRPC endpoint (TLS).
  sepolia:
    host: disperser-testnet-sepolia.eigenda.xyz:443
    protocol: grpc
    description: EigenDA Sepolia testnet Disperser gRPC endpoint (TLS).
  hoodi:
    host: disperser-testnet-hoodi.eigenda.xyz:443
    protocol: grpc
    description: EigenDA Hoodi testnet Disperser gRPC endpoint (TLS).
channels:
  disperseBlobAuthenticated:
    address: disperser.Disperser/DisperseBlobAuthenticated
    description: >-
      Bidirectional streaming gRPC method. The client opens the stream with a
      DisperseBlobRequest, the disperser replies with a BlobAuthHeader
      containing a challenge parameter, the client signs and returns an
      AuthenticationData message, and the disperser closes by sending a
      DisperseBlobReply with the assigned request_id.
    messages:
      authenticatedRequest:
        $ref: '#/components/messages/AuthenticatedRequest'
      authenticatedReply:
        $ref: '#/components/messages/AuthenticatedReply'
operations:
  sendAuthenticatedRequest:
    action: send
    channel:
      $ref: '#/channels/disperseBlobAuthenticated'
    summary: Client-to-disperser frames on the DisperseBlobAuthenticated stream.
    messages:
      - $ref: '#/channels/disperseBlobAuthenticated/messages/authenticatedRequest'
  receiveAuthenticatedReply:
    action: receive
    channel:
      $ref: '#/channels/disperseBlobAuthenticated'
    summary: Disperser-to-client frames on the DisperseBlobAuthenticated stream.
    messages:
      - $ref: '#/channels/disperseBlobAuthenticated/messages/authenticatedReply'
components:
  messages:
    AuthenticatedRequest:
      name: AuthenticatedRequest
      title: AuthenticatedRequest
      summary: Client frame on the DisperseBlobAuthenticated stream.
      payload:
        type: object
        description: >-
          Oneof payload - either the initial DisperseBlobRequest or the signed
          AuthenticationData returned in response to the BlobAuthHeader
          challenge.
        properties:
          disperse_request:
            $ref: '#/components/schemas/DisperseBlobRequest'
          authentication_data:
            $ref: '#/components/schemas/AuthenticationData'
    AuthenticatedReply:
      name: AuthenticatedReply
      title: AuthenticatedReply
      summary: Disperser frame on the DisperseBlobAuthenticated stream.
      payload:
        type: object
        description: >-
          Oneof payload - either a BlobAuthHeader challenge or the final
          DisperseBlobReply with the assigned request_id.
        properties:
          blob_auth_header:
            $ref: '#/components/schemas/BlobAuthHeader'
          disperse_reply:
            $ref: '#/components/schemas/DisperseBlobReply'
  schemas:
    DisperseBlobRequest:
      type: object
      properties:
        data:
          type: string
          format: byte
          description: >-
            Blob payload, up to 16 MiB. Every 32 bytes is interpreted as a
            big-endian bn254 field element and must be within the curve order.
        custom_quorum_numbers:
          type: array
          items:
            type: integer
            format: uint32
          description: >-
            Optional custom quorums in addition to the required quorums
            configured on the EigenDA contract.
        account_id:
          type: string
          description: >-
            Hex-encoded ECDSA public key of the client, used to verify the
            signature returned in AuthenticationData.
    BlobAuthHeader:
      type: object
      properties:
        challenge_parameter:
          type: integer
          format: uint32
          description: >-
            Replay-resistance challenge that the client must sign. In a future
            release this header will also carry the KZG commitment of the blob.
    AuthenticationData:
      type: object
      properties:
        authentication_data:
          type: string
          format: byte
          description: Client signature over the BlobAuthHeader.
    DisperseBlobReply:
      type: object
      properties:
        result:
          type: string
          enum:
            - UNKNOWN
            - PROCESSING
            - CONFIRMED
            - FAILED
            - FINALIZED
            - INSUFFICIENT_SIGNATURES
            - DISPERSING
          description: BlobStatus enum value. Always PROCESSING on initial accept.
        request_id:
          type: string
          format: byte
          description: >-
            Disperser-assigned blob key the client uses to poll GetBlobStatus.