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

9.1/100 minimal ▬ flat Agent 0/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Fintech Financial-Services Payments Cross-Border Payments Stablecoins Digital Wallet Banking Investing Latin America Mexico

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 9.1/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 1.2 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 3.3 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

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.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. 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. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Security Posture 1

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

Arq Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

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
x-api-posture: no-product-api
x-api-posture-basis: observed
x-api-posture-note: 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.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
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: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Fintech
- Financial-Services
- Payments
- Cross-Border Payments
- Stablecoins
- Digital Wallet
- Banking
- Investing
- Latin America
- Mexico
tags_raw:
- 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

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