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

# Add documents to a template

> Adds documents to a template. `nonce` MUST be unique within the template, since it names the file's storage folder. `fileSize` is in bytes; a document over the size limit is a 413. `order` places the document among the template's others. Each document comes back with its `nonce` and an `uploadUrl`: PUT the file's bytes to it to attach them. Place fields with `PUT /api/v1/templates/:templateId/fields`. Requires CREATE template access.



## OpenAPI

````yaml /api-reference/openapi.json post /api/v1/templates/{templateId}/documents
openapi: 3.0.3
info:
  title: Flowsign API
  version: 1.0.0
  description: >-
    Public v1 API for Flowsign. Every endpoint is authenticated with a Bearer
    API key (prefix `fsk_`). Errors use `{ error, details? }`; success responses
    wrap payload data as `{ data }`.


    An organisation is divided into workspaces. A key belongs to the
    organisation and acts in one workspace per request: pass `X-Workspace-Id`
    (see `GET /api/v1/workspaces`) or omit it to act in the default workspace.
    Packages, templates, contacts and members are scoped to the workspace the
    call acts in.
servers:
  - url: https://my.flowsign.app
    description: Production
security:
  - ApiKey: []
paths:
  /api/v1/templates/{templateId}/documents:
    post:
      tags:
        - Templates
      summary: Add documents to a template
      description: >-
        Adds documents to a template. `nonce` MUST be unique within the
        template, since it names the file's storage folder. `fileSize` is in
        bytes; a document over the size limit is a 413. `order` places the
        document among the template's others. Each document comes back with its
        `nonce` and an `uploadUrl`: PUT the file's bytes to it to attach them.
        Place fields with `PUT /api/v1/templates/:templateId/fields`. Requires
        CREATE template access.
      operationId: postTemplatesByTemplateIdDocuments
      parameters:
        - schema:
            type: string
          required: true
          name: templateId
          in: path
        - schema:
            type: string
            description: >-
              The workspace to act in, from `GET /api/v1/workspaces`. Omit to
              act in the organisation's default workspace. A workspace the key's
              user cannot act in is treated as omitted.
          required: false
          name: x-workspace-id
          in: header
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                docs:
                  type: array
                  items:
                    type: object
                    properties:
                      nonce:
                        type: string
                        minLength: 1
                      fileName:
                        type: string
                        minLength: 1
                      fileSize:
                        type: integer
                        minimum: 0
                      pageCount:
                        type: integer
                        minimum: 1
                      order:
                        type: integer
                        minimum: 0
                    required:
                      - nonce
                      - fileName
                  minItems: 1
              required:
                - docs
      responses:
        '201':
          description: Success
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      type: object
                      properties:
                        nonce:
                          type: string
                        documentId:
                          type: string
                        filePath:
                          type: string
                        uploadUrl:
                          type: string
                          format: uri
                      required:
                        - nonce
                        - documentId
                        - filePath
                        - uploadUrl
                required:
                  - data
        '401':
          description: Missing or invalid API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '402':
          description: Caller's plan does not include this feature (publicApi / webhooks)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: API key present but caller lacks the required permission
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '422':
          description: Request failed schema validation; details keyed by field
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '429':
          description: Rate limit exceeded; see `Retry-After`
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    Error:
      type: object
      properties:
        error:
          type: string
        details:
          type: object
          additionalProperties:
            type: array
            items:
              type: string
      required:
        - error
  securitySchemes:
    ApiKey:
      type: http
      scheme: bearer
      bearerFormat: fsk_*

````