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

# Transaction Signing Parameters

> Obtain the chain-specific parameters needed to sign and submit a transaction on-chain.



## OpenAPI

````yaml /apis/admin/openapi.json post /api/external/v1/transactions/params
openapi: 3.1.0
info:
  title: Magna Admin API
  version: 1.0.0
  description: >-
    The private, server-to-server API for managing allocations, funding and
    claims, transactions, portals, and token data. Authenticated with a project
    API key sent in the `x-magna-api-token` header.
servers:
  - url: https://app.magna.so
    description: Production
security:
  - apiToken: []
paths:
  /api/external/v1/transactions/params:
    post:
      tags:
        - Transactions
      summary: Transaction Signing Parameters
      description: >-
        Obtain the chain-specific parameters needed to sign and submit a
        transaction on-chain.
      operationId: postTransactionsParams
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type:
                - object
              properties:
                tokenId:
                  type:
                    - string
                  minLength: 1
                  format: uuid
                allocationId:
                  type:
                    - string
                  minLength: 1
                  format: uuid
                type:
                  type:
                    - string
                  enum:
                    - stakeholder
                    - admin
                sender:
                  type:
                    - string
                  minLength: 1
                transactionIds:
                  type:
                    - array
                  items:
                    type:
                      - string
                    minLength: 1
                    format: uuid
                  minItems: 1
                cursor:
                  type:
                    - string
                  minLength: 1
                  format: uuid
                limit:
                  type:
                    - number
                  exclusiveMinimum: 0
                  maximum: 100
              required:
                - tokenId
                - sender
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                type: object
                properties:
                  isProcessed:
                    type: boolean
                  result:
                    description: Endpoint-specific result payload.
              example:
                isProcessed: true
                result:
                  items:
                    - transactionGroupId: 8fccd856-ebd2-466b-be1c-e76fbb6963ee
                      transactions:
                        - transactionId: 9f7beee1-00c7-41df-a1ba-0654a98a9a06
                          status: PENDING
                          operationTypes:
                            - START_DISTRIBUTION
                      parameters:
                        - instructions: []
                          transactionId: 9f7beee1-00c7-41df-a1ba-0654a98a9a06
                  cursor: 8fccd856-ebd2-466b-be1c-e76fbb6963ee
                  total: 1
        '400':
          description: Validation error
        '401':
          description: Missing or invalid API token
        '403':
          description: API token lacks the required scope or project access
components:
  securitySchemes:
    apiToken:
      type: apiKey
      in: header
      name: x-magna-api-token

````