Sling (Morse)

Sling Money — rebranded to Morse in 2026 — is a consumer stablecoin money transfer app built by Avian Labs that lets people receive, hold, spend, invest, send, and convert US dollars across 150+ countries. It settles near-instant, low-fee cross-border payments over the Solana blockchain using reserve-backed stablecoins (USDC, EURC, USDP), and pairs the app with a prepaid Visa card and US stock/ETF investing. The company is regulated as a MiCAR-authorised crypto-asset service provider (AFM, Netherlands), a FinCEN-registered US Money Services Business, and is ISO/IEC 27001:2022 certified. It is a consumer product with no public developer API surface; this profile captures its published identity, security, and compliance posture.

Sling (Morse) is profiled on the APIs.io network. Tagged areas include Company, Fintech, Payments, Money Transfer, and Cross-Border Payments.

Sling (Morse)’s developer surface includes engineering blog, support, pricing, signup flow, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub
28.5/100 thin ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
0 APIs
CompanyFintechPaymentsMoney TransferCross-Border PaymentsRemittancesStablecoinsCryptocurrencySolanaConsumer Finance

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 28.5/100 · thin
Contract Quality 0.0 / 21
Developer Ergonomics 1.2 / 17
Access Clarity 10.3 / 17
Operational Transparency 3.2 / 11
Contract Governance 1.9 / 10
Discoverability 5.8 / 9
Regulatory Posture 7.0 / 15
Agent readiness — 3/100 · 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 3 / 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/sling: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 3

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

Sling Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Sling Vulnerability Disclosure

security.txt · contact published

SECURITY

Sling Trust Center

ISO/IEC 27001:2022

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp
SignUp

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown
WellKnown
 LLMsTxt
LLMsTxt

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 6

Authentication, authorization, and security posture

Compliance
Compliance
 TrustCenter
TrustCenter
 Security
Security
 VulnerabilityDisclosure
VulnerabilityDisclosure
 SecurityTxt
SecurityTxt
 DomainSecurity
DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: sling
name: Sling (Morse)
description: Sling Money — rebranded to Morse in 2026 — is a consumer stablecoin money transfer app built by Avian Labs that
  lets people receive, hold, spend, invest, send, and convert US dollars across 150+ countries. It settles near-instant, low-fee
  cross-border payments over the Solana blockchain using reserve-backed stablecoins (USDC, EURC, USDP), and pairs the app
  with a prepaid Visa card and US stock/ETF investing. The company is regulated as a MiCAR-authorised crypto-asset service
  provider (AFM, Netherlands), a FinCEN-registered US Money Services Business, and is ISO/IEC 27001:2022 certified. It is
  a consumer product with no public developer API surface; this profile captures its published identity, security, and compliance
  posture.
url: https://raw.githubusercontent.com/api-evangelist/sling/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- union-square-ventures
x-tier: stub
x-tier-reason: portfolio-lead
x-rebrand:
  from: Sling Money
  to: Morse
  parent: Avian Labs
  note: sling.money 301-redirects to morsemoney.com
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
image: https://morsemoney.com/og-default.png
tags:
- Company
- Fintech
- Payments
- Money Transfer
- Cross-Border Payments
- Remittances
- Stablecoins
- Cryptocurrency
- Solana
- Consumer Finance
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://morsemoney.com
- type: Blog
  url: https://morsemoney.com/blog
- type: Support
  url: https://support.sling.money
- type: StatusPage
  url: https://status.morsemoney.com
- type: GitHubOrganization
  url: https://github.com/avianlabs
- type: Pricing
  url: https://morsemoney.com/fees
- type: SignUp
  url: https://morsemoney.com/download
- type: TermsOfService
  url: https://morsemoney.com/legal/terms-of-service
- type: PrivacyPolicy
  url: https://morsemoney.com/legal/privacypolicy-cookienotice
- type: Compliance
  url: https://morsemoney.com/legal/regulatory-compliance
- type: TrustCenter
  url: security/sling-trust-center.yml
- type: Security
  url: https://morsemoney.com/legal/regulatory-compliance
- type: VulnerabilityDisclosure
  url: security/sling-vulnerability-disclosure.yml
- type: SecurityTxt
  url: well-known/sling-security.txt
- type: WellKnown
  url: well-known/sling-well-known.yml
- type: DomainSecurity
  url: security/sling-domain-security.yml
- type: Conformance
  url: conformance/sling-conformance.yml
- type: LLMsTxt
  url: llms/sling-llms.txt
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 7
  pass: local-v1