Funding Circle Documents API

openapi: 3.1.0
info:
  title: Funding Circle Introducer Decisions Documents API
  version: '1.0'
  description: The Funding Circle Introducer API lets partners and brokers submit and manage UK small-business loan applications programmatically. It covers term business loans and FlexiPay applications, application status polling, credit decisions, and document upload. Faithfully transcribed by the API Evangelist enrichment pipeline from the published HTML developer reference; Funding Circle does not publish a machine-readable OpenAPI, so request/response schemas capture only the fields named in the documentation and are not exhaustive.
  contact:
    name: Funding Circle Developer
    url: https://www.fundingcircle.com/uk/partners/developer/api-doc/
  x-apievangelist-generated: '2026-07-19'
  x-apievangelist-method: generated
  x-apievangelist-source: https://www.fundingcircle.com/uk/partners/developer/api-doc/
servers:
- url: https://api.fundingcircle.co.uk/v1
  description: Live
- url: https://sandbox.api.fundingcircle.co.uk/v1
  description: Sandbox
security:
- oauth2: []
tags:
- name: Documents
  description: Upload supporting documents
paths:
  /loan_application/{loan_application_uuid}/document_upload_url:
    get:
      operationId: getDocumentUploadUrl
      summary: Obtain a presigned document upload URL
      description: Returns a presigned S3 URL (30-second expiry) to PUT a PDF document (max 100 MB). Do not send the bearer token on the subsequent PUT upload.
      tags:
      - Documents
      parameters:
      - $ref: '#/components/parameters/LoanApplicationUuid'
      responses:
        '200':
          description: Presigned upload URL
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DocumentUploadUrl'
        '401':
          $ref: '#/components/responses/Problem'
        '404':
          $ref: '#/components/responses/Problem'
  /loan_application/{loan_application_uuid}/submit_required_action:
    patch:
      operationId: submitRequiredAction
      summary: Submit an uploaded required action
      description: Notify Funding Circle that a required document has been uploaded so processing can resume.
      tags:
      - Documents
      parameters:
      - $ref: '#/components/parameters/LoanApplicationUuid'
      responses:
        '200':
          description: Required action accepted
        '401':
          $ref: '#/components/responses/Problem'
        '404':
          $ref: '#/components/responses/Problem'
        '422':
          $ref: '#/components/responses/Problem'
components:
  parameters:
    LoanApplicationUuid:
      name: loan_application_uuid
      in: path
      required: true
      description: The UUID returned when the loan application was created.
      schema:
        type: string
        format: uuid
  schemas:
    DocumentUploadUrl:
      type: object
      properties:
        upload_url:
          type: string
          format: uri
          description: Presigned S3 URL, expires in 30 seconds.
    Problem:
      type: object
      description: RFC 7807 Problem Details.
      properties:
        type:
          type: string
        title:
          type: string
        status:
          type: integer
        detail:
          type: string
        instance:
          type: string
  responses:
    Problem:
      description: RFC 7807 problem details
      content:
        application/problem+json:
          schema:
            $ref: '#/components/schemas/Problem'
  securitySchemes:
    oauth2:
      type: oauth2
      description: OAuth 2.0 Client Credentials grant (RFC 6749 §4.4). POST a base64 `client_id:client_secret` to the token endpoint to obtain a 24-hour bearer access token.
      flows:
        clientCredentials:
          tokenUrl: https://auth.sandbox.api.fundingcircle.co.uk/oauth2/token
          scopes: {}