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

> ## Agent Instructions
> Bridge exposes three integration surfaces: the REST Integrations API for pushing data into Bridge, webhooks for receiving events from Bridge, and the public Custom Connections endpoint that a tenant's landing page posts to.
> The Integrations API host is https://api-connect-us.bridge.new and every request to it must be authenticated with the x-api-key header. Bridge does not use bearer tokens or OAuth.
> The Custom Connections endpoint is different and the Integrations API rules do not apply to it: it has its own host, it takes no x-api-key and no authentication header of any kind, and it is called from a visitor's browser. It is identified by a workspace id and a capture key together with a reCAPTCHA token. Never tell a reader to authenticate it with an API key, and never tell them to keep its capture key out of frontend code - it is designed to live in the page.
> REST error catalog keys use BRIDGE_<DOMAIN>_<NNNN>, for example BRIDGE_CONVERSATION_0001. Some reviewed legacy handlers return a recognized code plus a symbolic suffix separated by |; preserve the complete received value and use the compatible catalog lookup on /error-codes. Custom Connections uses separate BRIDGE.CAMPAIGN_LEADS.<NAME> identifiers on its own error reference. Never invent an error code or confuse the two integration surfaces.
> This documentation covers the Integrations API, webhooks and Custom Connections only. It does not describe the Bridge web application or its internal APIs.
> Before generating an API request, read the relevant OpenAPI specification or the individual endpoint Markdown page. llms-full.txt collects guides and endpoint descriptions; it does not embed every request and response schema. The REST and Custom Connections contracts are separate.
> Preserve the published host, method, path, operationId, authentication, headers, parameter and field names, types, formats, required and nullable fields, enums, defaults, limits, and response codes. Do not invent identifiers, fields, retry rules, or delivery guarantees. When published sources conflict, identify the conflicting passages and ask Bridge support to confirm the current behavior before relying on it.
> Custom Connections is the current name of the landing-page feature previously documented as Lead Capture. The existing /lead-capture documentation URLs, captureKey field, campaign-leads endpoint, and BRIDGE.CAMPAIGN_LEADS error identifiers are unchanged. This is a naming change, not a change to authentication or the API contract.
> For a complete workflow, start with the task guides: /guides/first-conversation, /guides/send-attachments, /guides/send-template, /guides/agent-outbound, /guides/pagination, /guides/identifiers and /guides/responses. Read the endpoint contract as well as the recipe. Outbound requires an existing Contact, but does not require creating a separate Conversation first.
> forceSend=true permits reuse of an existing active conversation; it does not create a fresh one by ignoring it and it is not idempotency. Recovery of a released recoverable conversation can occur even with false. The LeadScout and Agents outbound routes have different line-selection and controller checks; use /guides/agent-outbound.
> For webhook HMAC, follow /webhooks/verifying-signatures exactly: the Python JSON serialization with sorted keys is signed; X-Bridge-Timestamp is not included in that signature. Do not claim a signed timestamp, raw-body signing, exactly-once delivery or a global event order. Use /webhooks/receive-events for durable acceptance and duplicates.
> A 201 message response, 202 handoff or 202 Custom Connections response is not a provider delivery receipt. Do not invent a polling endpoint from messageId, trackingId or requestId. REST validation parsing must tolerate the compatibility difference explained in /error-codes.
> The documentation is available in English (existing root URLs), Spanish (/es/) and Brazilian Portuguese (/pt-br/). Prefer the reader's language when a localized page exists, but preserve the API's exact field names, enums, routes, authentication and examples. Translations describe the same API; they do not introduce regional API hosts or behaviors.
> For coding-assistant setup, use /connect-your-agent, /es/connect-your-agent or /pt-br/connect-your-agent. The Bridge documentation MCP server reads published documentation and has a separate optional feedback tool. Connecting it does not connect the coding assistant to a customer workspace or authorize live business requests.
> For direct HTTP access without MCP, start at https://docs.bridge.new/llms.txt. It lists every published page in English, Spanish and Brazilian Portuguese. Choose /llms-en.json, /llms-es.json or /llms-pt-br.json for a language-specific index, and /llms-full-en.json, /llms-full-es.json or /llms-full-pt-br.json for collected content. /llms-full.txt contains the combined collection. Fetch the original OpenAPI specification for exact schemas.
> For HTTP page reads, follow the .md URLs from the index or request Accept: text/markdown at the canonical page URL. The MCP virtual filesystem uses .mdx page paths instead; .mdx is not the public HTTP export extension. With Search MCP, set language to en, es or pt-BR explicitly; its default is en.
> For integration capabilities and source-selection rules, read https://docs.bridge.new/skill.md. Documentation access does not authorize business API actions; use the actual user request, workspace, credentials and target identifiers for any live integration.

# Crear cargas prefirmadas de archivos

> Carga un archivo adjunto, como un PDF, una imagen o un documento, antes de crear un mensaje. Esta operación devuelve los datos de un PUT prefirmado; los bytes del archivo se cargan por separado. Cuando la carga termine correctamente, utiliza el `mediaId` devuelto en la operación de envío. Sigue [Enviar un archivo adjunto](/es/guides/send-attachments) para los pasos de suma de comprobación, carga y mensaje.

Genera URL prefirmadas para cargar archivos (Presigned PUT). Valida la extensión, contentType y los límites por tipo. La suma de comprobación es obligatoria: envía el resumen SHA-256 en checksumBase64 (Base64). La carga debe incluir la cabecera x-amz-checksum-sha256 con el mismo valor.

---
Para cargar los archivos, DEBES utilizar la URL prefirmada devuelta con el método HTTP PUT. Carga el archivo exactamente en la URL indicada, sin modificaciones, tal como exige AWS S3 para un PUT con URL prefirmada. Consulta la documentación oficial de AWS S3: [Documentación de AWS S3 sobre Presigned PUT](https://docs.aws.amazon.com/AmazonS3/latest/userguide/PresignedUrlUploadObject.html).
Incluye todas las cabeceras obligatorias indicadas en la respuesta, por ejemplo, 'x-amz-checksum-sha256' con el valor SHA-256 correcto. AWS rechazará la carga si no utilizas el método HTTP o las cabeceras correctos.

<table><tr><th>Tipo</th><th>Extensión</th><th>Tipo de contenido</th><th>Tamaño máximo</th></tr><tr><td rowspan="4">Imagen</td><td>.jpeg</td><td>image/jpeg</td><td rowspan="4">16 MB</td></tr><tr><td>.jpg</td><td>image/jpeg</td></tr><tr><td>.png</td><td>image/png</td></tr><tr><td>.webp</td><td>image/webp</td></tr><tr><td rowspan="2">GIF</td><td>.gif</td><td>image/gif</td><td rowspan="2">3 MB</td></tr><tr><td>.mp4</td><td>video/mp4</td></tr><tr><td rowspan="3">Vídeo</td><td>.avi</td><td>video/x-msvideo</td><td rowspan="3">64 MB</td></tr><tr><td>.mov</td><td>video/quicktime</td></tr><tr><td>.mp4</td><td>video/mp4</td></tr><tr><td rowspan="4">Audio</td><td>.m4a</td><td>audio/mp4</td><td rowspan="4">16 MB</td></tr><tr><td>.mp3</td><td>audio/mpeg</td></tr><tr><td>.ogg</td><td>audio/ogg</td></tr><tr><td>.wav</td><td>audio/wav</td></tr><tr><td rowspan="8">Documento</td><td>.doc</td><td>application/msword</td><td rowspan="8">100 MB</td></tr><tr><td>.docx</td><td>application/vnd.openxmlformats-officedocument.wordprocessingml.document</td></tr><tr><td>.pdf</td><td>application/pdf</td></tr><tr><td>.ppt</td><td>application/vnd.ms-powerpoint</td></tr><tr><td>.pptx</td><td>application/vnd.openxmlformats-officedocument.presentationml.presentation</td></tr><tr><td>.txt</td><td>text/plain</td></tr><tr><td>.xls</td><td>application/vnd.ms-excel</td></tr><tr><td>.xlsx</td><td>application/vnd.openxmlformats-officedocument.spreadsheetml.sheet</td></tr></table>



## OpenAPI

````yaml /es/api-reference/openapi.yaml post /bridge/api/v1/workspaces/{workspaceId}/files
openapi: 3.1.0
info:
  title: Bridge API
  summary: Especificación de la API de Bridge para gestionar el sistema de chat.
  description: >-
    Especificación de la API REST de integraciones de Bridge para gestionar
    contactos, conversaciones, mensajes, archivos, atributos personalizados,
    canales de proveedores, plantillas, usuarios internos y Agents.


    Los webhooks se documentan por separado en
    https://docs.bridge.new/es/webhooks; este OpenAPI contiene únicamente
    endpoints REST.


    **Arquitectura multiempresa**: las operaciones sobre recursos se limitan a
    un workspace específico mediante workspaceId. La comprobación de estado no
    incluye un workspace en su ruta.
  termsOfService: https://www.sainapsis.com/legal/terms-of-service
  contact:
    name: Bridge Support
    url: https://app.bridge.new/
    email: support@sainapsis.com
  license:
    name: MIT License
    url: https://spdx.org/licenses/MIT.html
  version: 1.0.0
servers:
  - url: https://api-connect-us.bridge.new
    description: Servidor de producción
security: []
paths:
  /bridge/api/v1/workspaces/{workspaceId}/files:
    post:
      tags:
        - Files API
      summary: Crear cargas prefirmadas de archivos
      description: >-
        Carga un archivo adjunto, como un PDF, una imagen o un documento, antes
        de crear un mensaje. Esta operación devuelve los datos de un PUT
        prefirmado; los bytes del archivo se cargan por separado. Cuando la
        carga termine correctamente, utiliza el `mediaId` devuelto en la
        operación de envío. Sigue [Enviar un archivo
        adjunto](/es/guides/send-attachments) para los pasos de suma de
        comprobación, carga y mensaje.


        Genera URL prefirmadas para cargar archivos (Presigned PUT). Valida la
        extensión, contentType y los límites por tipo. La suma de comprobación
        es obligatoria: envía el resumen SHA-256 en checksumBase64 (Base64). La
        carga debe incluir la cabecera x-amz-checksum-sha256 con el mismo valor.


        ---

        Para cargar los archivos, DEBES utilizar la URL prefirmada devuelta con
        el método HTTP PUT. Carga el archivo exactamente en la URL indicada, sin
        modificaciones, tal como exige AWS S3 para un PUT con URL prefirmada.
        Consulta la documentación oficial de AWS S3: [Documentación de AWS S3
        sobre Presigned
        PUT](https://docs.aws.amazon.com/AmazonS3/latest/userguide/PresignedUrlUploadObject.html).

        Incluye todas las cabeceras obligatorias indicadas en la respuesta, por
        ejemplo, 'x-amz-checksum-sha256' con el valor SHA-256 correcto. AWS
        rechazará la carga si no utilizas el método HTTP o las cabeceras
        correctos.


        <table><tr><th>Tipo</th><th>Extensión</th><th>Tipo de
        contenido</th><th>Tamaño máximo</th></tr><tr><td
        rowspan="4">Imagen</td><td>.jpeg</td><td>image/jpeg</td><td
        rowspan="4">16
        MB</td></tr><tr><td>.jpg</td><td>image/jpeg</td></tr><tr><td>.png</td><td>image/png</td></tr><tr><td>.webp</td><td>image/webp</td></tr><tr><td
        rowspan="2">GIF</td><td>.gif</td><td>image/gif</td><td rowspan="2">3
        MB</td></tr><tr><td>.mp4</td><td>video/mp4</td></tr><tr><td
        rowspan="3">Vídeo</td><td>.avi</td><td>video/x-msvideo</td><td
        rowspan="3">64
        MB</td></tr><tr><td>.mov</td><td>video/quicktime</td></tr><tr><td>.mp4</td><td>video/mp4</td></tr><tr><td
        rowspan="4">Audio</td><td>.m4a</td><td>audio/mp4</td><td rowspan="4">16
        MB</td></tr><tr><td>.mp3</td><td>audio/mpeg</td></tr><tr><td>.ogg</td><td>audio/ogg</td></tr><tr><td>.wav</td><td>audio/wav</td></tr><tr><td
        rowspan="8">Documento</td><td>.doc</td><td>application/msword</td><td
        rowspan="8">100
        MB</td></tr><tr><td>.docx</td><td>application/vnd.openxmlformats-officedocument.wordprocessingml.document</td></tr><tr><td>.pdf</td><td>application/pdf</td></tr><tr><td>.ppt</td><td>application/vnd.ms-powerpoint</td></tr><tr><td>.pptx</td><td>application/vnd.openxmlformats-officedocument.presentationml.presentation</td></tr><tr><td>.txt</td><td>text/plain</td></tr><tr><td>.xls</td><td>application/vnd.ms-excel</td></tr><tr><td>.xlsx</td><td>application/vnd.openxmlformats-officedocument.spreadsheetml.sheet</td></tr></table>
      operationId: create_preloaded_files_bridge_api_v1_workspaces__workspaceId__files_post
      parameters:
        - name: workspaceId
          in: path
          required: true
          schema:
            type: string
            format: uuid
            description: Identificador único del workspace (UUID v4).
            examples:
              - b6cf1c4a-2b1e-4e63-8f3e-0f9d1a2a1234
            title: Workspaceid
          description: Identificador único del workspace (UUID v4).
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: array
              items:
                $ref: '#/components/schemas/PreloadedFileRequest'
              description: >-
                Solicitud para preparar la carga de un archivo con una URL
                prefirmada.
              title: Preloaded Files
      responses:
        '201':
          description: Respuesta satisfactoria
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/PreloadedFileResponse'
                title: >-
                  Response Create Preloaded Files Bridge Api V1 Workspaces 
                  Workspaceid  Files Post
        '403':
          description: Acceso prohibido
          content:
            application/json:
              examples:
                FORBIDDEN:
                  value:
                    title: Forbidden
                    status: 403
                    code: BRIDGE_CORE_0301
              schema:
                $ref: '#/components/schemas/Problem'
        '422':
          description: Error de validación
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
        '429':
          description: Demasiadas solicitudes
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Problem'
              examples:
                WORKSPACE_BUDGET_EXHAUSTED:
                  value:
                    title: Too Many Requests
                    status: 429
                    code: BRIDGE_RATE_LIMIT_0001
      security:
        - x-api-key: []
components:
  schemas:
    PreloadedFileRequest:
      properties:
        name:
          type: string
          title: Name
          description: Nombre original del archivo, incluida la extensión.
          examples:
            - prueba.jpg
        fileType:
          $ref: '#/components/schemas/FileType'
          title: File Type
          description: Categoría lógica del tipo de archivo.
          examples:
            - IMAGE
            - VIDEO
            - AUDIO
            - DOCUMENT
        contentType:
          anyOf:
            - type: string
            - type: 'null'
          title: Content Type
          description: Tipo MIME del archivo.
          examples:
            - image/jpeg
            - application/pdf
            - null
        checksumBase64:
          type: string
          title: Checksum Base64
          description: >-
            Resumen SHA-256 del archivo completo, codificado en Base64. Se
            utiliza para firmar el PUT prefirmado y debe enviarse de nuevo en el
            encabezado x-amz-checksum-sha256 durante la carga.
          examples:
            - OaZ+I0yqf3u3u5w8h0Y2v4e7W9vHh3zbn2mA2m1yPVo=
      additionalProperties: false
      type: object
      required:
        - name
        - fileType
        - checksumBase64
      title: PreloadedFileRequest
      description: Solicitud para preparar la carga de un archivo con una URL prefirmada.
    PreloadedFileResponse:
      properties:
        mediaId:
          type: string
          title: Media Identifier
          description: Identificador único del medio.
          examples:
            - 4a2c1f7e-2f84-4a5f-bd2d-6b6b2f0c1234
        presignUrl:
          $ref: '#/components/schemas/PresignPut'
          title: Presign Url
          description: >-
            Datos del PUT prefirmado para cargar el medio (URL, método y
            encabezados).
      additionalProperties: false
      type: object
      required:
        - mediaId
        - presignUrl
      title: PreloadedFileResponse
      description: Respuesta para un archivo precargado con URL prefirmada para su carga.
    Problem:
      properties:
        title:
          type: string
          title: Title
          description: Resumen breve del tipo de problema.
        status:
          type: integer
          title: Status
          description: >-
            Código de estado HTTP generado por el servidor de origen para esta
            instancia del problema.
        detail:
          anyOf:
            - type: string
            - type: 'null'
          title: Detail
          description: Explicación específica de esta instancia del problema.
        instance:
          anyOf:
            - type: string
            - type: 'null'
          title: Instance
          description: Referencia URI que identifica esta instancia del problema.
        traceId:
          anyOf:
            - type: string
            - type: 'null'
          title: Traceid
          description: ID de seguimiento para depuración.
        code:
          anyOf:
            - type: string
            - type: 'null'
          title: Code
          description: >-
            Código para identificar el error; consulta la página de códigos de
            error para más detalles.
        errors:
          anyOf:
            - items:
                additionalProperties: true
                type: object
              type: array
            - type: 'null'
          title: Errors
          description: Lista de detalles de errores.
        extra:
          anyOf:
            - additionalProperties: true
              type: object
            - type: 'null'
          title: Extra
          description: Información adicional sobre el problema.
      type: object
      required:
        - title
        - status
      title: Problem
      description: Objeto que representa el cuerpo de una respuesta Problem.
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    FileType:
      type: string
      enum:
        - IMAGE
        - VIDEO
        - AUDIO
        - DOCUMENT
        - STICKER
        - GIF
        - WEBSITE
      title: FileType
    PresignPut:
      properties:
        url:
          type: string
          title: Url
          description: URL de PUT prefirmado.
          examples:
            - https://s3.amazonaws.com/bucket/path/to/object
        method:
          type: string
          const: PUT
          title: Method
          description: Método HTTP que se usará para la carga.
          default: PUT
          examples:
            - PUT
        headers:
          additionalProperties:
            type: string
          type: object
          title: Headers
          description: >-
            Encabezados obligatorios para el PUT prefirmado (por ejemplo,
            Content-Type y x-amz-checksum-sha256).
          examples:
            - Content-Type: image/jpeg
              x-amz-checksum-sha256: OaZ+I0yqf3u3u5w8h0Y2v4e7W9vHh3zbn2mA2m1yPVo=
      type: object
      required:
        - url
      title: PresignPut
      description: Datos del PUT prefirmado para cargar un archivo de medios.
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError
  securitySchemes:
    x-api-key:
      type: apiKey
      description: Copy the API key as provided by the Bridge Console.
      in: header
      name: x-api-key

````

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