Fin

Fin (fin.com) is a global cross-border payments infrastructure company that moves money internationally over stablecoin rails and direct liquidity networks instead of traditional correspondent banking, settling in minutes rather than days. Its Orchestration API lets businesses onboard individual and business customers (KYC/KYB), create beneficiaries, quote FX and fees, send transfer and batch payouts, provision multi-currency virtual accounts that convert fiat deposits to crypto (e.g. USD to USDC), and run crypto orchestration across exchanges. Founded by ex-Citadel engineers, Fin raised a $17M Series A to bring its stablecoin-powered high-value payments product to market. This profile was enriched from the public developer surface at developer.fin.com.

Fin publishes 9 APIs on the APIs.io network, including Authentication API, Balances API, Beneficiaries API, and 6 more. Tagged areas include Company, Payments, Cross-Border Payments, Stablecoins, and Fintech.

The Fin catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Fin’s developer surface includes documentation, API reference, getting-started guide, authentication, changelog, sandbox, support, and 18 more developer resources.

🌐 Visit website 📡 Source on GitHub

45.5/100 developing ▬ flat Agent 71/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5

AccessSelf serve

9 APIs 1 MCP Servers

CompanyPaymentsCross-Border PaymentsStablecoinsFintechMoney MovementForeign ExchangeVirtual AccountsCrypto

Kin Score

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

Composite quality — 45.5/100 · developing

Contract Quality 16.1 / 25

Developer Ergonomics 14.8 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 6.2 / 13

Governance 0.0 / 12

Discoverability 10.0 / 10

Agent readiness — 71/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 15 / 15

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 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/fin: 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 9

Individual APIs this provider publishes, each with its own machine-readable definition.

MCP Servers 1

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

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Sandbox

Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

OpenAPI

OpenAPI

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgentSkill

AgenticAccess

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Webhooks

Conformance

Lifecycle

DataModel

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 4

Status, limits, changes, and where to get help

StatusPage

Deprecation

ChangeLog

Support

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: fin
name: Fin
description: Fin (fin.com) is a global cross-border payments infrastructure company that moves money internationally over
  stablecoin rails and direct liquidity networks instead of traditional correspondent banking, settling in minutes rather
  than days. Its Orchestration API lets businesses onboard individual and business customers (KYC/KYB), create beneficiaries,
  quote FX and fees, send transfer and batch payouts, provision multi-currency virtual accounts that convert fiat deposits
  to crypto (e.g. USD to USDC), and run crypto orchestration across exchanges. Founded by ex-Citadel engineers, Fin raised
  a $17M Series A to bring its stablecoin-powered high-value payments product to market. This profile was enriched from the
  public developer surface at developer.fin.com.
url: https://raw.githubusercontent.com/api-evangelist/fin/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- accel
- iconiq-capital
- kleiner-perkins
x-backed-by-note: Inherited from the VC-portfolio stub that seeded this repo and left unverified. Public reporting attributes
  fin.com's $17M Series A to Pantera Capital, Sequoia Capital and Samsung Next; the listed firms were not confirmed for this
  entity.
x-tier: enriched
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
image: https://cdn.sanity.io/images/xemwqsar/production/0e65aec0795ced77ed5301b8627cbb88059d11d2-1200x630.webp?w=1200&h=630&q=80&fit=crop
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Payments
- Cross-Border Payments
- Stablecoins
- Fintech
- Money Movement
- Foreign Exchange
- Virtual Accounts
- Crypto
apis:
- aid: fin:fin-authentication-api
  name: Fin Authentication API
  description: A modified OAuth 2.0 Client Credential Flow
  humanURL: https://developer.fin.com/
  baseURL: https://api.fin.com
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/fin-authentication-api-openapi.yml
  - type: Authentication
    url: authentication/fin-authentication.yml
  - type: Webhooks
    url: asyncapi/fin-webhooks.yml
  - type: ErrorCatalog
    url: errors/fin-problem-types.yml
  - type: Conventions
    url: conventions/fin-conventions.yml
  - type: DataModel
    url: data-model/fin-data-model.yml
- aid: fin:fin-balances-api
  name: Fin Balances API
  description: Retrieve wallet balance information
  humanURL: https://developer.fin.com/
  baseURL: https://api.fin.com
  tags:
  - Balances
  properties:
  - type: OpenAPI
    url: openapi/fin-balances-api-openapi.yml
  - type: Authentication
    url: authentication/fin-authentication.yml
  - type: Webhooks
    url: asyncapi/fin-webhooks.yml
  - type: ErrorCatalog
    url: errors/fin-problem-types.yml
  - type: Conventions
    url: conventions/fin-conventions.yml
  - type: DataModel
    url: data-model/fin-data-model.yml
- aid: fin:fin-beneficiaries-api
  name: Fin Beneficiaries API
  description: Manage beneficiary accounts for payments and transfers
  humanURL: https://developer.fin.com/
  baseURL: https://api.fin.com
  tags:
  - Beneficiaries
  properties:
  - type: OpenAPI
    url: openapi/fin-beneficiaries-api-openapi.yml
  - type: Authentication
    url: authentication/fin-authentication.yml
  - type: Webhooks
    url: asyncapi/fin-webhooks.yml
  - type: ErrorCatalog
    url: errors/fin-problem-types.yml
  - type: Conventions
    url: conventions/fin-conventions.yml
  - type: DataModel
    url: data-model/fin-data-model.yml
- aid: fin:fin-catalogue-api
  name: Fin Catalogue API
  description: 'A set of endpoints to retrieve contextual data to assemble requests

    to fin.com''s API'
  humanURL: https://developer.fin.com/
  baseURL: https://api.fin.com
  tags:
  - Catalogue
  properties:
  - type: OpenAPI
    url: openapi/fin-catalogue-api-openapi.yml
  - type: Authentication
    url: authentication/fin-authentication.yml
  - type: Webhooks
    url: asyncapi/fin-webhooks.yml
  - type: ErrorCatalog
    url: errors/fin-problem-types.yml
  - type: Conventions
    url: conventions/fin-conventions.yml
  - type: DataModel
    url: data-model/fin-data-model.yml
- aid: fin:fin-crypto-orchestration-api
  name: Fin Crypto Orchestration API
  description: The Crypto Orchestration API from Fin — 3 operation(s) for crypto orchestration.
  humanURL: https://developer.fin.com/
  baseURL: https://api.fin.com
  tags:
  - Crypto Orchestration
  properties:
  - type: OpenAPI
    url: openapi/fin-crypto-orchestration-api-openapi.yml
  - type: Authentication
    url: authentication/fin-authentication.yml
  - type: Webhooks
    url: asyncapi/fin-webhooks.yml
  - type: ErrorCatalog
    url: errors/fin-problem-types.yml
  - type: Conventions
    url: conventions/fin-conventions.yml
  - type: DataModel
    url: data-model/fin-data-model.yml
- aid: fin:fin-customers-api
  name: Fin Customers API
  description: Customer management and document upload operations
  humanURL: https://developer.fin.com/
  baseURL: https://api.fin.com
  tags:
  - Customers
  properties:
  - type: OpenAPI
    url: openapi/fin-customers-api-openapi.yml
  - type: Authentication
    url: authentication/fin-authentication.yml
  - type: Webhooks
    url: asyncapi/fin-webhooks.yml
  - type: ErrorCatalog
    url: errors/fin-problem-types.yml
  - type: Conventions
    url: conventions/fin-conventions.yml
  - type: DataModel
    url: data-model/fin-data-model.yml
- aid: fin:fin-fees-fx-rates-api
  name: Fin Fees & FX Rates API
  description: Retrieve fees and foreign exchange rates
  humanURL: https://developer.fin.com/
  baseURL: https://api.fin.com
  tags:
  - Fees & FX Rates
  properties:
  - type: OpenAPI
    url: openapi/fin-fees-fx-rates-api-openapi.yml
  - type: Authentication
    url: authentication/fin-authentication.yml
  - type: Webhooks
    url: asyncapi/fin-webhooks.yml
  - type: ErrorCatalog
    url: errors/fin-problem-types.yml
  - type: Conventions
    url: conventions/fin-conventions.yml
  - type: DataModel
    url: data-model/fin-data-model.yml
- aid: fin:fin-transactions-api
  name: Fin Transactions API
  description: Transaction history and management for beneficiaries
  humanURL: https://developer.fin.com/
  baseURL: https://api.fin.com
  tags:
  - Transactions
  properties:
  - type: OpenAPI
    url: openapi/fin-transactions-api-openapi.yml
  - type: Authentication
    url: authentication/fin-authentication.yml
  - type: Webhooks
    url: asyncapi/fin-webhooks.yml
  - type: ErrorCatalog
    url: errors/fin-problem-types.yml
  - type: Conventions
    url: conventions/fin-conventions.yml
  - type: DataModel
    url: data-model/fin-data-model.yml
- aid: fin:fin-virtual-accounts-api
  name: Fin Virtual Accounts API
  description: Create and manage virtual accounts for USD to USDC conversions
  humanURL: https://developer.fin.com/
  baseURL: https://api.fin.com
  tags:
  - Virtual Accounts
  properties:
  - type: OpenAPI
    url: openapi/fin-virtual-accounts-api-openapi.yml
  - type: Authentication
    url: authentication/fin-authentication.yml
  - type: Webhooks
    url: asyncapi/fin-webhooks.yml
  - type: ErrorCatalog
    url: errors/fin-problem-types.yml
  - type: Conventions
    url: conventions/fin-conventions.yml
  - type: DataModel
    url: data-model/fin-data-model.yml
common:
- type: DeveloperPortal
  url: https://developer.fin.com/
- type: Documentation
  url: https://developer.fin.com/
- type: APIReference
  url: https://developer.fin.com/api-reference
- type: GettingStarted
  url: https://developer.fin.com/index
- type: OpenAPI
  url: openapi/fin-openapi-original.yml
- type: Overlay
  url: overlays/fin-openapi-overlay.yaml
- type: Authentication
  url: authentication/fin-authentication.yml
- type: Conventions
  url: conventions/fin-conventions.yml
- type: ErrorCatalog
  url: errors/fin-problem-types.yml
- type: Webhooks
  url: asyncapi/fin-webhooks.yml
- type: Conformance
  url: conformance/fin-conformance.yml
- type: Lifecycle
  url: lifecycle/fin-lifecycle.yml
- type: StatusPage
  url: https://fin.instatus.com
- type: Deprecation
  url: https://developer.fin.com/changelogs/2026-04-20
- type: ChangeLog
  url: changelog/fin-changelog.yml
- type: Sandbox
  url: sandbox/fin-sandbox.yml
- type: DataModel
  url: data-model/fin-data-model.yml
- type: MCPServer
  url: mcp/fin-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/fin-agentic-access.yml
- type: DomainSecurity
  url: security/fin-domain-security.yml
- type: LLMsTxt
  url: llms/fin-llms.txt
- type: Support
  url: mailto:support@fin.com
- type: Blog
  url: https://www.fin.com/stories
- type: Website
  url: https://www.fin.com
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

Fin

Kin Score

APIs 9

Fin Authentication API

Fin Balances API

Fin Beneficiaries API

Fin Catalogue API

Fin Crypto Orchestration API

Fin Customers API

Fin Fees & FX Rates API

Fin Transactions API

Fin Virtual Accounts API

MCP Servers 1

fin-mcp.yml

Event Specifications 1

Fin Webhooks

Security Posture 2

Fin Authentication

Fin Domain Security

Agentic Access 1

Fin Agentic Access

Resources