> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gomaestro.org/llms.txt
> Use this file to discover all available pages before exploring further.

> Submit a signed Cardano transaction to the network with automatic retry logic and confirmation tracking.

# Submit a Transaction



## OpenAPI

````yaml cardano/transaction-manager-api/openapi.json post /txmanager
openapi: 3.0.3
info:
  title: Cardano - Transaction Manager API
  description: Cardano Transaction Submit API with advanced monitoring.
  contact:
    name: Maestro Blockchain Inc.
    url: https://gomaestro.org/
    email: info@gomaestro.org
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.txt
  version: v1.7.0
servers:
  - url: https://mainnet.gomaestro-api.org/v1
    description: Cardano Mainnet
  - url: https://preprod.gomaestro-api.org/v1
    description: Cardano Preprod
  - url: https://preview.gomaestro-api.org/v1
    description: Cardano Preview
security:
  - api-key: []
tags:
  - name: Transactions
  - name: Webhooks
paths:
  /txmanager:
    post:
      tags:
        - Transactions
      summary: Submit a Transaction
      description: Submit an already serialized transaction to the Cardano network.
      operationId: submit_transaction
      parameters:
        - name: Content-Type
          in: header
          required: true
          schema:
            type: string
            enum:
              - application/cbor
      requestBody:
        required: true
        content:
          application/cbor:
            schema:
              type: string
            example: raw_transaction_hex_data_here
      responses:
        '202':
          description: Transaction accepted for submission.
          content:
            text/plain:
              schema:
                type: string
        '400':
          description: Bad Request - Invalid transaction data
          content:
            text/plain:
              schema:
                type: string
        '415':
          description: Unsupported Media Type
          content:
            text/plain:
              schema:
                type: string
        '500':
          description: Server Error
          content:
            text/plain:
              schema:
                type: string
components:
  securitySchemes:
    api-key:
      type: apiKey
      in: header
      name: api-key
      description: API key for authenticating requests.

````