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

# List Vault Keys

> Fetches the mobile device's X25519 public key for end-to-end encrypting vault payloads. Requires the vault:store scope. The mobile app must have registered a key first.



## OpenAPI

````yaml get /v1/vault/keys
openapi: 3.1.0
info:
  title: BKey API
  description: Biometric approval infrastructure for AI agents — OAuth 2.1 + CIBA
  version: 1.0.0
  contact:
    name: BKey
    url: https://bkey.id
    email: dev@bkey.id
  license:
    name: Apache-2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
servers:
  - url: https://api.bkey.id
    description: Production
security:
  - bearerAuth: []
tags:
  - name: OAuth
    description: OAuth 2.1 token, device auth, CIBA, revocation
  - name: Checkout
    description: Agent-initiated checkout with biometric approval
  - name: Vault
    description: Encrypted secret storage with biometric access
  - name: Payments
    description: Payment methods and shared payment tokens
  - name: Identity
    description: DID and identity management
paths:
  /v1/vault/keys:
    get:
      tags:
        - Vault
      summary: List Vault Keys
      description: >-
        Fetches the mobile device's X25519 public key for end-to-end encrypting
        vault payloads. Requires the vault:store scope. The mobile app must have
        registered a key first.
      responses:
        '200':
          description: Default Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                  publicKey:
                    type: string
                    description: Base64-encoded X25519 public key of the mobile device
                  keyId:
                    type: string
                    description: Optional identifier for the public key
                required:
                  - success
                  - publicKey
                additionalProperties: false
        '401':
          description: Default Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    enum:
                      - false
                  error:
                    type: object
                    properties:
                      code:
                        type: string
                        description: Stable machine-readable error code
                      message:
                        type: string
                        description: Human-readable error message
                    required:
                      - code
                      - message
                    additionalProperties: false
                required:
                  - success
                  - error
                additionalProperties: false
        '403':
          description: Default Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    enum:
                      - false
                  error:
                    type: object
                    properties:
                      code:
                        type: string
                        description: Stable machine-readable error code
                      message:
                        type: string
                        description: Human-readable error message
                    required:
                      - code
                      - message
                    additionalProperties: false
                required:
                  - success
                  - error
                additionalProperties: false
        '404':
          description: No vault public key registered yet
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    enum:
                      - false
                  error:
                    type: object
                    properties:
                      code:
                        type: string
                        description: Stable machine-readable error code
                      message:
                        type: string
                        description: Human-readable error message
                    required:
                      - code
                      - message
                    additionalProperties: false
                required:
                  - success
                  - error
                additionalProperties: false
                description: No vault public key registered yet
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: EdDSA-signed JWT obtained via OAuth 2.1 client_credentials or CIBA

````