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, Stablecoins, 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
41.4/100 developing ▬ flat Agent 41/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
AccessSelf serve
10 APIs 1 MCP Servers
CompanyCryptoStablecoinsPaymentsBrazilPixFintechBlockchainDigital AssetsWalletsYield

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 41.4/100 · developing
Contract Quality 13.2 / 21
Developer Ergonomics 8.5 / 17
Access Clarity 4.0 / 17
Operational Transparency 0.9 / 11
Contract Governance 1.7 / 10
Discoverability 6.9 / 9
Regulatory Posture 4.9 / 15
Agent readiness — 41/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 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
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
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

Open Collections 11

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Crown API & Webhooks Accounts API

OPEN COLLECTION

Crown API & Webhooks Accounts Assets API

OPEN COLLECTION

Crown API & Webhooks Accounts Claims API

OPEN COLLECTION

Crown API & Webhooks Accounts Nft Transfers API

OPEN COLLECTION

Crown API & Webhooks Accounts Orders API

OPEN COLLECTION

Crown API & Webhooks Accounts Quotes API

OPEN COLLECTION

Crown API & Webhooks Accounts Tax Exemption API

OPEN COLLECTION

Crown API & Webhooks Accounts Transfers API

OPEN COLLECTION

Crown API & Webhooks Accounts Wallets API

OPEN COLLECTION

Crown API & Webhooks Accounts Withdrawals API

OPEN COLLECTION

Scroll for all 11

MCP Servers 1

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

BRL MCP Server

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: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Crypto
- Stablecoins
- Payments
- Brazil
- Pix
- Fintech
- Blockchain
- Digital Assets
- Wallets
- Yield
tags_raw:
- 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:
  - Account
  tags_raw:
  - 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:
  - Order
  tags_raw:
  - 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/_original/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