BRL Nft Transfers API
The Nft Transfers API from BRL — 1 operation(s) for nft transfers.
Work with this as data
Every API here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for apis
7 MCP tools reach this
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
This API
curl "https://apis.io/api/v1/apis/brl-nft-transfers-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"Discovery needs no key. Ratings and market analysis are Pro.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.
OpenAPI Specification
openapi: 3.2.0
info:
title: Crown API & Webhooks Nft Transfers API
version: 1.0.0
description: 'Open API 3 docs for Crown API
Webhook events that Crown will POST to your configured endpoint URL. All webhooks expect a 200 OK response. Payloads use kebab-case for all keys to match the Crown API conventions.'
servers:
- url: https://app.crown-brlv.com
description: Production server
tags:
- name: Nft Transfers
paths:
/api/v0/nft-transfers:
get:
responses:
'200':
description: NFT transfers list retrieved successfully
content:
application/json:
schema:
type: object
properties:
transfers:
type: array
items:
type: object
properties:
id:
type: string
format: uuid
description: Unique identifier for the NFT transfer
example: 660e8400-e29b-41d4-a716-446655440010
reward-certificate-id:
type: string
format: uuid
description: Reward certificate identifier being transferred
example: 660e8400-e29b-41d4-a716-446655440010
source-address:
type: string
description: Source wallet address
example: '0xabcdef1234567890abcdef1234567890abcdef12'
target-address:
type: string
description: Target wallet address
example: '0x1234567890abcdef1234567890abcdef12345678'
state:
type: string
enum:
- created
- failed
- completed
- pending
description: Current state of the transfer
example: created
created-at:
type: string
example: '2024-01-15T10:30:00Z'
format: date-time
description: ISO 8601 timestamp when the transfer was created
state-updated-at:
type: string
example: '2024-01-15T10:30:00Z'
format: date-time
description: ISO 8601 timestamp when the transfer state was last updated
additionalProperties: false
required:
- id
- reward-certificate-id
- source-address
- target-address
- state
- created-at
- state-updated-at
description: List of reward certificate transfers
additionalProperties: false
required:
- transfers
'400':
description: Bad request - Invalid input parameters
content:
application/json:
schema:
type: object
properties:
error:
type: object
properties:
type:
type: string
message:
type: string
code:
type: string
additionalProperties: false
required:
- type
- message
- code
description: Bad request error details
additionalProperties: false
required:
- error
'403':
description: Forbidden - Access denied
content:
application/json:
schema:
type: object
properties:
error:
type: object
properties:
type:
type: string
message:
type: string
code:
type: string
additionalProperties: false
required:
- type
- message
- code
description: Forbidden access error details
additionalProperties: false
required:
- error
'404':
description: Not found - Resource does not exist
content:
application/json:
schema:
type: object
properties:
error:
type: object
properties:
type:
type: string
message:
type: string
code:
type: string
additionalProperties: false
required:
- type
- message
- code
description: Resource not found error details
additionalProperties: false
required:
- error
'422':
description: Unprocessable entity - Validation failed
content:
application/json:
schema:
type: object
properties:
error:
type: object
properties:
type:
type: string
message:
type: string
code:
type: string
additionalProperties: false
required:
- type
- message
- code
description: Validation error details
additionalProperties: false
required:
- error
summary: List reward certificate NFT transfers
description: Retrieves a list of reward certificate NFT transfers for the authenticated user.
tags:
- Nft Transfers
post:
requestBody:
content:
application/json:
schema:
type: object
properties:
source-address:
type: string
description: Source wallet address (0x...)
example: '0xabcdef1234567890abcdef1234567890abcdef12'
target-address:
type: string
description: Target wallet address (0x...)
example: '0x1234567890abcdef1234567890abcdef12345678'
reward-certificate-id:
type: string
format: uuid
description: Reward certificate identifier
example: 660e8400-e29b-41d4-a716-446655440010
additionalProperties: false
required:
- source-address
- target-address
- reward-certificate-id
responses:
'200':
description: NFT transfer created successfully
content:
application/json:
schema:
type: object
properties:
transfer:
type: object
properties:
id:
type: string
format: uuid
description: Unique identifier for the NFT transfer
example: 660e8400-e29b-41d4-a716-446655440010
reward-certificate-id:
type: string
format: uuid
description: Reward certificate identifier being transferred
example: 660e8400-e29b-41d4-a716-446655440010
source-address:
type: string
description: Source wallet address
example: '0xabcdef1234567890abcdef1234567890abcdef12'
target-address:
type: string
description: Target wallet address
example: '0x1234567890abcdef1234567890abcdef12345678'
state:
type: string
enum:
- created
- failed
- completed
- pending
description: Current state of the transfer
example: created
created-at:
type: string
example: '2024-01-15T10:30:00Z'
format: date-time
description: ISO 8601 timestamp when the transfer was created
state-updated-at:
type: string
example: '2024-01-15T10:30:00Z'
format: date-time
description: ISO 8601 timestamp when the transfer state was last updated
additionalProperties: false
required:
- id
- reward-certificate-id
- source-address
- target-address
- state
- created-at
- state-updated-at
description: Details of the created NFT transfer
additionalProperties: false
required:
- transfer
'400':
description: Bad request - Invalid input parameters
content:
application/json:
schema:
type: object
properties:
error:
type: object
properties:
type:
type: string
message:
type: string
code:
type: string
additionalProperties: false
required:
- type
- message
- code
description: Bad request error details
additionalProperties: false
required:
- error
'403':
description: Forbidden - Access denied
content:
application/json:
schema:
type: object
properties:
error:
type: object
properties:
type:
type: string
message:
type: string
code:
type: string
additionalProperties: false
required:
- type
- message
- code
description: Forbidden access error details
additionalProperties: false
required:
- error
'404':
description: Not found - Resource does not exist
content:
application/json:
schema:
type: object
properties:
error:
type: object
properties:
type:
type: string
message:
type: string
code:
type: string
additionalProperties: false
required:
- type
- message
- code
description: Resource not found error details
additionalProperties: false
required:
- error
'422':
description: Unprocessable entity - Validation failed
content:
application/json:
schema:
type: object
properties:
error:
type: object
properties:
type:
type: string
message:
type: string
code:
type: string
additionalProperties: false
required:
- type
- message
- code
description: Validation error details
additionalProperties: false
required:
- error
summary: Transfer reward certificate NFT between wallets
description: Transfers a reward certificate NFT from a source wallet to a target wallet. Source and target should be EVM wallet addresses (0x...).
tags:
- Nft Transfers
components:
securitySchemes:
JwtAuth:
type: http
scheme: bearer
bearerFormat: JWT
description: JWT-based authentication.
ApiKey:
type: apiKey
in: header
name: X-API-Key
description: Your account API Key
signature:
type: apiKey
in: header
name: X-Crown-Signature
description: HMAC-SHA256 signature of the request body using your webhook secret. Verify this signature to ensure the webhook is from Crown.
x-webhook-security:
note: All webhook requests include an X-Crown-Signature header containing an HMAC-SHA256 signature of the request body. Use your webhook secret (provided when registering the webhook) to verify the signature and ensure the request is authentic.
algorithm: HMAC-SHA256
header: X-Crown-Signature
verification-steps:
- 1. Extract the X-Crown-Signature header from the request
- 2. Compute HMAC-SHA256 of the raw request body using your webhook secret
- 3. Compare the computed signature with the header value
- 4. Only process the webhook if signatures match
example-code:
node-js: "const crypto = require('crypto');\nconst signature = crypto.createHmac('sha256', webhookSecret)\n .update(JSON.stringify(requestBody))\n .digest('hex');\nconst isValid = signature === req.headers['x-crown-signature'];"
python: "import hmac\nimport hashlib\nimport json\n\nsignature = hmac.new(\n webhook_secret.encode('utf-8'),\n json.dumps(request_body).encode('utf-8'),\n hashlib.sha256\n).hexdigest()\nis_valid = signature == request.headers['x-crown-signature']"