Arq

Arq (formerly DolarApp) is a Latin American cross-border fintech app that gives travelers, investors, and professionals digital dollar and digital euro accounts at real market rates without hidden fees. Founded in 2021, the mobile-first platform offers currency conversion, a borderless payment card, global accounts to send and receive international payments, bill payment, PIX transfers, stock and ETF investing, and high-yield Trade and Save accounts, plus ARQ Premium and Prestige tiers. Arq raised $70M from Sequoia Capital and Founders Fund and serves over 2 million users across the Americas. Arq is a consumer mobile product and does not publish a public API or developer portal; this profile captures its verified public identity and web surface for the API Evangelist network.

Arq is profiled on the APIs.io network. Tagged areas include Company, Fintech, Financial Services, Payments, and Cross-Border Payments.

Arq’s developer surface includes support, engineering blog, signup flow, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

17.2/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyFintechFinancial ServicesPaymentsCross-Border PaymentsStablecoinDigital WalletBankingInvestingLatin AmericaMexico

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 17.2/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 6.8 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 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/arq: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

HelpCenter

HelpCenter

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: arq
name: Arq
description: Arq (formerly DolarApp) is a Latin American cross-border fintech app that gives travelers, investors, and professionals
  digital dollar and digital euro accounts at real market rates without hidden fees. Founded in 2021, the mobile-first platform
  offers currency conversion, a borderless payment card, global accounts to send and receive international payments, bill
  payment, PIX transfers, stock and ETF investing, and high-yield Trade and Save accounts, plus ARQ Premium and Prestige tiers.
  Arq raised $70M from Sequoia Capital and Founders Fund and serves over 2 million users across the Americas. Arq is a consumer
  mobile product and does not publish a public API or developer portal; this profile captures its verified public identity
  and web surface for the API Evangelist network.
url: https://raw.githubusercontent.com/api-evangelist/arq/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://www.arqfinance.com/og-image-en.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- founders-fund
x-tier: stub
x-tier-reason: portfolio-lead
x-formerly: DolarApp
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Fintech
- Financial Services
- Payments
- Cross-Border Payments
- Stablecoin
- Digital Wallet
- Banking
- Investing
- Latin America
- Mexico
apis: []
common:
- type: DomainSecurity
  url: security/arq-domain-security.yml
- type: Website
  url: https://www.arqfinance.com
- type: Support
  url: https://help.arqfinance.com/en
- type: HelpCenter
  url: https://help.arqfinance.com/en
- type: Blog
  url: https://www.arqfinance.com/en-MX/blog
- type: SignUp
  url: https://join.arqfinance.com/
- type: PrivacyPolicy
  url: https://www.arqfinance.com/en-MX/legal/privacy-policy
- type: TermsOfService
  url: https://www.arqfinance.com/en-MX/legal
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Arq