BRL website screenshot

BRL

Crown (brl.xyz) is a Brazilian fintech, backed by Paradigm, Coinbase Ventures and Paxos, that issues BRLV — a stablecoin pegged 1:1 to the Brazilian Real and backed by Brazilian federal government bonds held in a bankruptcy-remote structure under temporary authorization from the Banco Central do Brasil. The Crown API lets partners create known-taxpayer accounts and sub-accounts, provision wallets, fund balances via PIX and TED, request quotes and place conversion orders across fiat (BRL/USD) and tokens (BRLV, wBRLY, USDC, USDT on Base and Ethereum mainnet), move tokens on-chain, claim accumulated yield from reward certificates (including recurring auto-claims and NFT reward-certificate transfers), withdraw via PIX/TED or token, track Brazilian monthly tax-exemption progress, and subscribe to webhooks for deposit, order, transfer, withdrawal, claim and sub-account approval events. Authentication pairs an X-API-Key identifier with a short-lived (<50s) self-signed RS256 JWT that binds each request's URI, nonce and SHA-256 body hash.

BRL publishes 10 APIs on the APIs.io network, including Accounts API, Assets API, Claims API, and 7 more. Tagged areas include Company, Crypto, Stablecoin, Payments, and Brazil.

The BRL catalog on APIs.io includes 1 event-driven AsyncAPI specification.

BRL’s developer surface includes authentication, documentation, API reference, getting-started guide, signup flow, and 17 more developer resources.

🌐 Visit website 📡 Source on GitHub
42.3/100 thin ▬ flat Agent 66/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
10 APIs 1 MCP Servers
CompanyCryptoStablecoinPaymentsBrazilPIXFintechBlockchainDigital AssetsWalletsYield

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 42.3/100 · thin
Contract Quality 15.1 / 25
Developer Ergonomics 10.9 / 20
Commercial Clarity 4.7 / 20
Operational Transparency 1.0 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 66/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/brl: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 10

Individual APIs this provider publishes, each with its own machine-readable definition.

BRL Accounts API

The Accounts API from BRL — 27 operation(s) for accounts.

BRL Assets API

The Assets API from BRL — 4 operation(s) for assets.

BRL Claims API

The Claims API from BRL — 2 operation(s) for claims.

BRL Nft Transfers API

The Nft Transfers API from BRL — 1 operation(s) for nft transfers.

BRL Orders API

The Orders API from BRL — 2 operation(s) for orders.

BRL Quotes API

The Quotes API from BRL — 1 operation(s) for quotes.

BRL Tax Exemption API

The Tax Exemption API from BRL — 1 operation(s) for tax exemption.

BRL Transfers API

The Transfers API from BRL — 1 operation(s) for transfers.

BRL Wallets API

The Wallets API from BRL — 4 operation(s) for wallets.

BRL Withdrawals API

The Withdrawals API from BRL — 2 operation(s) for withdrawals.

Scroll for all 10

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

brl-mcp.yml

MCP SERVER

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Brl Webhooks

ASYNCAPI

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Brl Authentication

apiKey/http · 3 schemes

SECURITY

Brl Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Brl Agentic Access

65 operations · 27 acting

65 operations · 27 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Login
Login

Documentation 3

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference
 OpenAPI
OpenAPI

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 MCPServer
MCPServer
 AgenticAccess
AgenticAccess

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Webhooks
Webhooks
 Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 DataModel
DataModel

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 LinkedIn
LinkedIn

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: brl
name: BRL
description: Crown (brl.xyz) is a Brazilian fintech, backed by Paradigm, Coinbase Ventures and Paxos, that issues BRLV — a
  stablecoin pegged 1:1 to the Brazilian Real and backed by Brazilian federal government bonds held in a bankruptcy-remote
  structure under temporary authorization from the Banco Central do Brasil. The Crown API lets partners create known-taxpayer
  accounts and sub-accounts, provision wallets, fund balances via PIX and TED, request quotes and place conversion orders
  across fiat (BRL/USD) and tokens (BRLV, wBRLY, USDC, USDT on Base and Ethereum mainnet), move tokens on-chain, claim accumulated
  yield from reward certificates (including recurring auto-claims and NFT reward-certificate transfers), withdraw via PIX/TED
  or token, track Brazilian monthly tax-exemption progress, and subscribe to webhooks for deposit, order, transfer, withdrawal,
  claim and sub-account approval events. Authentication pairs an X-API-Key identifier with a short-lived (<50s) self-signed
  RS256 JWT that binds each request's URI, nonce and SHA-256 body hash.
url: https://raw.githubusercontent.com/api-evangelist/brl/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- paradigm
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Crypto
- Stablecoin
- Payments
- Brazil
- PIX
- Fintech
- Blockchain
- Digital Assets
- Wallets
- Yield
image: https://raw.githubusercontent.com/api-evangelist/brl/refs/heads/main/apis.yml
apis:
- aid: brl:brl-accounts-api
  name: BRL Accounts API
  description: The Accounts API from BRL — 27 operation(s) for accounts.
  humanURL: https://docs.crown-brlv.com/
  baseURL: https://app.crown-brlv.com
  tags:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/brl-accounts-api-openapi.yml
  - type: Documentation
    url: https://docs.crown-brlv.com/
  - type: APIReference
    url: https://docs.crown-brlv.com/api-reference/introduction
  - type: GettingStarted
    url: https://docs.crown-brlv.com/guides/api-keys-setup
  - type: Authentication
    url: https://docs.crown-brlv.com/guides/authentication
  - type: Webhooks
    url: https://docs.crown-brlv.com/guides/webhooks-setup
- aid: brl:brl-assets-api
  name: BRL Assets API
  description: The Assets API from BRL — 4 operation(s) for assets.
  humanURL: https://docs.crown-brlv.com/
  baseURL: https://app.crown-brlv.com
  tags:
  - Assets
  properties:
  - type: OpenAPI
    url: openapi/brl-assets-api-openapi.yml
  - type: Documentation
    url: https://docs.crown-brlv.com/
  - type: APIReference
    url: https://docs.crown-brlv.com/api-reference/introduction
  - type: GettingStarted
    url: https://docs.crown-brlv.com/guides/api-keys-setup
  - type: Authentication
    url: https://docs.crown-brlv.com/guides/authentication
  - type: Webhooks
    url: https://docs.crown-brlv.com/guides/webhooks-setup
- aid: brl:brl-claims-api
  name: BRL Claims API
  description: The Claims API from BRL — 2 operation(s) for claims.
  humanURL: https://docs.crown-brlv.com/
  baseURL: https://app.crown-brlv.com
  tags:
  - Claims
  properties:
  - type: OpenAPI
    url: openapi/brl-claims-api-openapi.yml
  - type: Documentation
    url: https://docs.crown-brlv.com/
  - type: APIReference
    url: https://docs.crown-brlv.com/api-reference/introduction
  - type: GettingStarted
    url: https://docs.crown-brlv.com/guides/api-keys-setup
  - type: Authentication
    url: https://docs.crown-brlv.com/guides/authentication
  - type: Webhooks
    url: https://docs.crown-brlv.com/guides/webhooks-setup
- aid: brl:brl-nft-transfers-api
  name: BRL Nft Transfers API
  description: The Nft Transfers API from BRL — 1 operation(s) for nft transfers.
  humanURL: https://docs.crown-brlv.com/
  baseURL: https://app.crown-brlv.com
  tags:
  - Nft Transfers
  properties:
  - type: OpenAPI
    url: openapi/brl-nft-transfers-api-openapi.yml
  - type: Documentation
    url: https://docs.crown-brlv.com/
  - type: APIReference
    url: https://docs.crown-brlv.com/api-reference/introduction
  - type: GettingStarted
    url: https://docs.crown-brlv.com/guides/api-keys-setup
  - type: Authentication
    url: https://docs.crown-brlv.com/guides/authentication
  - type: Webhooks
    url: https://docs.crown-brlv.com/guides/webhooks-setup
- aid: brl:brl-orders-api
  name: BRL Orders API
  description: The Orders API from BRL — 2 operation(s) for orders.
  humanURL: https://docs.crown-brlv.com/
  baseURL: https://app.crown-brlv.com
  tags:
  - Orders
  properties:
  - type: OpenAPI
    url: openapi/brl-orders-api-openapi.yml
  - type: Documentation
    url: https://docs.crown-brlv.com/
  - type: APIReference
    url: https://docs.crown-brlv.com/api-reference/introduction
  - type: GettingStarted
    url: https://docs.crown-brlv.com/guides/api-keys-setup
  - type: Authentication
    url: https://docs.crown-brlv.com/guides/authentication
  - type: Webhooks
    url: https://docs.crown-brlv.com/guides/webhooks-setup
- aid: brl:brl-quotes-api
  name: BRL Quotes API
  description: The Quotes API from BRL — 1 operation(s) for quotes.
  humanURL: https://docs.crown-brlv.com/
  baseURL: https://app.crown-brlv.com
  tags:
  - Quotes
  properties:
  - type: OpenAPI
    url: openapi/brl-quotes-api-openapi.yml
  - type: Documentation
    url: https://docs.crown-brlv.com/
  - type: APIReference
    url: https://docs.crown-brlv.com/api-reference/introduction
  - type: GettingStarted
    url: https://docs.crown-brlv.com/guides/api-keys-setup
  - type: Authentication
    url: https://docs.crown-brlv.com/guides/authentication
  - type: Webhooks
    url: https://docs.crown-brlv.com/guides/webhooks-setup
- aid: brl:brl-tax-exemption-api
  name: BRL Tax Exemption API
  description: The Tax Exemption API from BRL — 1 operation(s) for tax exemption.
  humanURL: https://docs.crown-brlv.com/
  baseURL: https://app.crown-brlv.com
  tags:
  - Tax Exemption
  properties:
  - type: OpenAPI
    url: openapi/brl-tax-exemption-api-openapi.yml
  - type: Documentation
    url: https://docs.crown-brlv.com/
  - type: APIReference
    url: https://docs.crown-brlv.com/api-reference/introduction
  - type: GettingStarted
    url: https://docs.crown-brlv.com/guides/api-keys-setup
  - type: Authentication
    url: https://docs.crown-brlv.com/guides/authentication
  - type: Webhooks
    url: https://docs.crown-brlv.com/guides/webhooks-setup
- aid: brl:brl-transfers-api
  name: BRL Transfers API
  description: The Transfers API from BRL — 1 operation(s) for transfers.
  humanURL: https://docs.crown-brlv.com/
  baseURL: https://app.crown-brlv.com
  tags:
  - Transfers
  properties:
  - type: OpenAPI
    url: openapi/brl-transfers-api-openapi.yml
  - type: Documentation
    url: https://docs.crown-brlv.com/
  - type: APIReference
    url: https://docs.crown-brlv.com/api-reference/introduction
  - type: GettingStarted
    url: https://docs.crown-brlv.com/guides/api-keys-setup
  - type: Authentication
    url: https://docs.crown-brlv.com/guides/authentication
  - type: Webhooks
    url: https://docs.crown-brlv.com/guides/webhooks-setup
- aid: brl:brl-wallets-api
  name: BRL Wallets API
  description: The Wallets API from BRL — 4 operation(s) for wallets.
  humanURL: https://docs.crown-brlv.com/
  baseURL: https://app.crown-brlv.com
  tags:
  - Wallets
  properties:
  - type: OpenAPI
    url: openapi/brl-wallets-api-openapi.yml
  - type: Documentation
    url: https://docs.crown-brlv.com/
  - type: APIReference
    url: https://docs.crown-brlv.com/api-reference/introduction
  - type: GettingStarted
    url: https://docs.crown-brlv.com/guides/api-keys-setup
  - type: Authentication
    url: https://docs.crown-brlv.com/guides/authentication
  - type: Webhooks
    url: https://docs.crown-brlv.com/guides/webhooks-setup
- aid: brl:brl-withdrawals-api
  name: BRL Withdrawals API
  description: The Withdrawals API from BRL — 2 operation(s) for withdrawals.
  humanURL: https://docs.crown-brlv.com/
  baseURL: https://app.crown-brlv.com
  tags:
  - Withdrawals
  properties:
  - type: OpenAPI
    url: openapi/brl-withdrawals-api-openapi.yml
  - type: Documentation
    url: https://docs.crown-brlv.com/
  - type: APIReference
    url: https://docs.crown-brlv.com/api-reference/introduction
  - type: GettingStarted
    url: https://docs.crown-brlv.com/guides/api-keys-setup
  - type: Authentication
    url: https://docs.crown-brlv.com/guides/authentication
  - type: Webhooks
    url: https://docs.crown-brlv.com/guides/webhooks-setup
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/brl-domain-security.yml
- type: Authentication
  url: authentication/brl-authentication.yml
- type: Website
  url: https://brl.xyz
- type: DeveloperPortal
  url: https://docs.crown-brlv.com/
- type: Documentation
  url: https://docs.crown-brlv.com/
- type: APIReference
  url: https://docs.crown-brlv.com/api-reference/introduction
- type: GettingStarted
  url: https://docs.crown-brlv.com/guides/api-keys-setup
- type: SignUp
  url: https://onboarding.crown-brlv.com/start
- type: Login
  url: https://app.crown-brlv.com/
- type: PrivacyPolicy
  url: https://d2bv8dtly8iz1m.cloudfront.net/crown/Crown_PT_Termo_de_Privacidade_27a36188f2.pdf
- type: LinkedIn
  url: https://www.linkedin.com/company/crown-brl/
- type: OpenAPI
  url: openapi/brl-openapi-original.json
- type: LLMsTxt
  url: llms/brl-llms.txt
- type: Webhooks
  url: asyncapi/brl-webhooks.yml
- type: Conventions
  url: conventions/brl-conventions.yml
- type: ErrorCatalog
  url: errors/brl-problem-types.yml
- type: Lifecycle
  url: lifecycle/brl-lifecycle.yml
- type: Conformance
  url: conformance/brl-conformance.yml
- type: DataModel
  url: data-model/brl-data-model.yml
- type: MCPServer
  url: mcp/brl-mcp.yml
- type: Overlay
  url: overlays/brl-openapi-overlay.yaml
- type: AgenticAccess
  url: agentic-access/brl-agentic-access.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence