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OpenAPI Specification

openapi: 3.2.0
info:
  title: BorgLayer Transfer In API
  version: 1.0.0
  description: 'The BorgLayer API lets you — and AI agents, via the BorgLayer MCP connector —

    search and register domains, transfer domains in, manage DNS, set registrant

    details, and form US LLCs, all paid from a prepaid USDC account balance.


    - **Base URL:** `https://api.borglayer.com/api/v1`

    - **MCP connector:** `https://mcp.borglayer.com/mcp` (Streamable HTTP)

    - **Auth:** `Authorization: Bearer blrk_…` on every request


    ## Getting started


    1. Create a BorgLayer account and an API key (format `blrk_…`) in your

    dashboard. Each key has **scopes** that limit what it can do and is bound

    to your account''s prepaid USDC balance.

    2. Call the API with `Authorization: Bearer blrk_…`, or add the MCP connector

    in Claude (**Customize → Connectors → Add custom connector**) with URL

    `https://mcp.borglayer.com/mcp`, Authentication **No sign-in**, and request

    header `Authorization: Bearer blrk_…`.

    3. Top up your prepaid balance in the dashboard. Read actions are free; actions

    that cost money (register, transfer-in, formation) debit your balance.


    ## Money model


    Actions that cost money debit your prepaid USDC balance. If the balance is too

    low the API returns `402 insufficient_balance` and **nothing is charged**.


    ## Scopes


    | Scope | Grants |

    |-------|--------|

    | `domains.read` | search, list your domains |

    | `domains.register` | register a domain (debits balance) |

    | `domains.transfer` | transfer a domain in (may debit balance) |

    | `dns.read` | list DNS records |

    | `dns.write` | add/delete DNS records |

    | `registrant.read` | list registrant profiles |

    | `registrant.write` | create/delete registrant profiles |

    | `formation.read` | quote a formation, read order status |

    | `formation.write` | create (file) a formation (debits balance) |

    | `balance.read` | read your prepaid balance |


    A `403` with `required scope: ` means your key lacks that scope.'
  contact:
    name: BorgLayer
    url: https://borglayer.com
    email: support@borglayer.com
servers:
- url: https://api.borglayer.com/api/v1
  description: Production
security:
- ApiKey: []
tags:
- name: Transfer In
paths:
  /transfer-in:
    post:
      summary: Transfer a domain in from another registrar
      description: 'Transfer a domain you own at another registrar into BorgLayer. Needs the

        auth/EPP code from your current registrar, and the domain must be unlocked

        there. Free for free ccTLDs; others include a 1-year extension debited from

        balance. Scope: `domains.transfer`. `whois_privacy` is honored only for TLDs

        that support it and ignored otherwise.'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - domain
              - auth_code
              properties:
                domain:
                  type: string
                  example: example.com
                auth_code:
                  type: string
                whois_privacy:
                  type: boolean
                  default: true
      responses:
        '200':
          description: Transfer started
      tags:
      - Transfer In
      operationId: postTransferIn
      x-operation-id-source: derived
components:
  securitySchemes:
    ApiKey:
      type: http
      scheme: bearer
      bearerFormat: blrk_…