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

# Create passkey session

> Initiate a new passkey creation session. Returns a URL for the passkey creation flow with challenge and session parameters.



## OpenAPI

````yaml https://grid.squads.xyz/api-docs/openapi.json post /api/grid/v1/passkeys
openapi: 3.1.0
info:
  title: Grid v1 API
  description: Grid v1 REST API for Solana-based smart account system
  contact:
    name: Grid API Support
    url: https://squads.so
    email: support@squads.so
  license:
    name: MIT
  version: 1.0.0
servers:
  - url: https://grid.squads.xyz
    description: Production server
security:
  - bearer_auth: []
tags:
  - name: accounts
    description: Smart account management operations
  - name: spending-limits
    description: Spending limit management
  - name: standing-orders
    description: Standing order operations
  - name: transactions
    description: Transaction management
  - name: trade
    description: Trade operations and management
  - name: payments
    description: Payment intent operations
  - name: passkeys
    description: Passkey management
  - name: kyc
    description: Know Your Customer operations
  - name: external-accounts
    description: External bank account management
  - name: virtual-accounts
    description: Virtual account management
  - name: auth
    description: Authentication operations
  - name: proposals
    description: Proposal management for multi-sig operations
  - name: compliance
    description: Compliance entity management and KYB/KYC operations
paths:
  /api/grid/v1/passkeys:
    post:
      tags:
        - passkeys
      summary: Create passkey session
      description: >-
        Initiate a new passkey creation session. Returns a URL for the passkey
        creation flow with challenge and session parameters.
      operationId: handler
      parameters:
        - name: x-grid-environment
          in: header
          description: Solana network environment (sandbox, devnet, mainnet)
          required: true
          schema:
            type: string
          example: sandbox
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreatePasskeySessionRequestPayload'
        required: true
      responses:
        '200':
          description: Passkey session URL created successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreatePasskeySessionResponsePayload'
        '400':
          description: Invalid request parameters
        '500':
          description: Internal server error
      security:
        - bearer_auth: []
components:
  schemas:
    CreatePasskeySessionRequestPayload:
      type: object
      required:
        - metaInfo
      properties:
        baseUrl:
          type:
            - string
            - 'null'
        metaInfo:
          $ref: '#/components/schemas/MetaInfo'
        sessionKey:
          oneOf:
            - type: 'null'
            - $ref: '#/components/schemas/SessionKey'
    CreatePasskeySessionResponsePayload:
      type: object
      required:
        - url
      properties:
        url:
          type: string
    MetaInfo:
      type: object
      required:
        - appName
      properties:
        appName:
          type: string
        redirectUrl:
          type:
            - string
            - 'null'
    SessionKey:
      type: object
      description: >-
        Grid v1 API SessionKey type that supports backward-compatible
        deserialization

        from both raw bytes array (old format) and base58 string (new format).

        Always serializes to base58 string format.
      required:
        - key
        - expiration
      properties:
        expiration:
          type: integer
          format: int64
          minimum: 0
        key:
          type: string
          example: '11111111111111111111111111111111'
  securitySchemes:
    bearer_auth:
      type: http
      scheme: bearer
      description: Your Grid API key from the Grid Dashboard

````