Unstoppable Finance (Iron)
Unstoppable Finance is the Berlin fintech behind Iron (iron.xyz), the Stablecoin Payment Network - fiat-to-stablecoin and stablecoin-to-fiat infrastructure for businesses. Founded as Unstoppable Finance GmbH and builder of the Ultimate self-custodial DeFi wallet, the company rebranded to Iron and was acquired by MoonPay in 2025. The Iron API provides onramp, offramp, and swap flows via Autoramps (standing fiat/crypto conversion rules), customer onboarding with tiered KYC/KYB, Travel Rule wallet verification, virtual accounts, fee profiles, exchange rates, stablecoin issuance, and Standard Webhooks event delivery, with a fully simulated sandbox environment.
Unstoppable Finance (Iron) publishes 9 API contracts indexed on the APIs.io network, including Addresses API, Autoramp API, Currencies API, and 6 more. Tagged areas include Company, Stablecoins, Payments, On-Ramp, and Off-Ramp.
The Unstoppable Finance (Iron) catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.
Unstoppable Finance (Iron)’s developer surface includes changelog, engineering blog, documentation, getting-started guide, authentication, sandbox, CLI, and 38 more developer resources.
What this lets a business do 3
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
Kin Score
Markets this provider is in provisional
The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.
| Market | Position | Depth | Registered MCP server | Declares compatibility |
|---|---|---|---|---|
| Open Banking | undeclared | - | - | - |
Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
APIs 9
Individual APIs this provider publishes, each with its own machine-readable definition.
Unstoppable Finance (Iron) Addresses API
Wallet and bank account registration Every wallet address that interacts with Iron must be registered (linked) to a customer **before** it can be used in any flow — onramp, offr...
Unstoppable Finance (Iron) Autoramp API
Operations on Autoramp
Unstoppable Finance (Iron) Currencies API
Operations on Currencies
Unstoppable Finance (Iron) Customer API
Operations on Customers
Unstoppable Finance (Iron) Sandbox API
Operations for Sandbox Testing
Unstoppable Finance (Iron) Webhooks API
Operations on Webhooks
Unstoppable Finance (Iron) Exchange Rate API
Operations on Exchange Rate
Unstoppable Finance (Iron) Fee Profiles API
Operations on Fee Profiles
Unstoppable Finance (Iron) Terms And Conditions API
Operations on Terms and Conditions
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Postman Collections 9
Ready-to-run Postman collections for exercising this provider's APIs.
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Open Collections 10
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONIron API - Sandbox Addresses API
OPEN COLLECTIONIron API - Sandbox Addresses Autoramp API
OPEN COLLECTIONIron API - Sandbox Addresses Currencies API
OPEN COLLECTIONIron API - Sandbox Addresses Customer API
OPEN COLLECTIONIron API - Sandbox Addresses ExchangeRate API
OPEN COLLECTIONIron API - Sandbox Addresses FeeProfiles API
OPEN COLLECTIONIron API - Addresses Sandbox API
OPEN COLLECTIONIron API - Sandbox Addresses TermsAndConditions API
OPEN COLLECTIONIron API - Sandbox Addresses Webhooks API
OPEN COLLECTIONScroll for all 10
Pricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Unstoppable Finance Rate Limits
RATE LIMITSEvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Unstoppable Finance Webhooks
ASYNCAPISemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Unstoppable Finance Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
Unstoppable Finance (Iron) API Rules
SPECTRALOpenAPI Overlays 1
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Unstoppable Finance Iron Overlay
UNRECORDEDJSON Schema 32
Standalone JSON Schema definitions for this provider's data models.
ApiAutorampOpenBankingPayment
JSON SCHEMAApiAutorampQuotePreview
JSON SCHEMAAutoramp
JSON SCHEMAComplianceQuestionaire
JSON SCHEMACreateAutoramp
JSON SCHEMACreatePartnerFeeProfileRequest
JSON SCHEMACreateSandboxTransactionParams
JSON SCHEMACryptoCurrency
JSON SCHEMACustomerRequirements
JSON SCHEMACustomer
JSON SCHEMAExchangeRate
JSON SCHEMAFeeProfile
JSON SCHEMAFiatAddress
JSON SCHEMAFiatAddressStatus
JSON SCHEMAFiatCurrency
JSON SCHEMAIdentificationCreateParamsV2
JSON SCHEMAIdentification
JSON SCHEMAPagedList_FeeProfile
JSON SCHEMAPagedList_Webhook
JSON SCHEMAPingWebhookParams
JSON SCHEMAPixAddress
JSON SCHEMARegisterSelfAttestedWalletRequest
JSON SCHEMARegisterSelfHostedWalletRequest
JSON SCHEMASandboxSandboxTransaction
JSON SCHEMASelfHostedWalletResponse
JSON SCHEMASignedAutorampQuote
JSON SCHEMASignedAutorampRateQuote
JSON SCHEMASigning
JSON SCHEMATermsAndConditionsLink
JSON SCHEMAUpdateWebhookRequest
JSON SCHEMAVerifiedAddressResponse
JSON SCHEMAWebhook
JSON SCHEMAScroll for all 32
Security Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 4
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 10
Pagination, idempotency, versioning, errors, and events
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Build 4
SDKs, sample code, and the tooling you integrate with
Access & Security 6
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 5
Properties that don't map to a standard resource type
Source (apis.yml)
Work with this as data
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