# Finix Payments

**Canonical:** https://apis.io/providers/finix-payments/  
**Website:** https://www.finixpayments.com/  
**APIs profiled:** 1

Finix is a full-stack payments technology provider that lets businesses, software platforms, and marketplaces accept and send payments online and in person. Its REST API (version 2022-02-01) covers the full payments lifecycle — Identities, Merchants, Payment Instruments, Authorizations, Transfers, Settlements, Disputes, Verifications, Fee/Payout Profiles, Devices/terminals, and Webhooks — enabling card, ACH, EFT, digital-wallet, and Buy-Now-Pay-Later acceptance, seller onboarding/underwriting, split transfers, payouts, and payment facilitation (PayFac-as-a-service). Finix is a Level 1 PCI DSS certified platform with browser (finix.js) and mobile tokenization SDKs, hosted checkout pages, and payment links. Authentication is HTTP Basic Auth with environment-scoped API keys; the API uses cursor pagination, idempotency_id request-level idempotency, HAL responses, and dated versioning via the Finix-Version header.

## Kin Score — 63.8 / 100 (strong)

Scored 2026-08-30 under rubric 0.17.2. Trend: flat (-0.5 from 64.3).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 63.3 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 71.1 |
| Developer Ergonomics | 78.0 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

Regulatory layer — **Payments**: 68.8 (matched via tags).

## Agent readiness — 35.4 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | documented |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | documented |
| Error Semantics | documented |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (19)

- **Finix Payments Authorizations API** — {'$ref': 'api-descriptions/tags/authorizations.md'}
- **Finix Payments Balance Transfers API** — {'$ref': 'api-descriptions/tags/balance-transfers.md'}
- **Finix Payments Compliance Forms API** — {'$ref': 'api-descriptions/tags/compliance-forms.md'}
- **Finix Payments Devices API** — {'$ref': 'api-descriptions/tags/devices.md'}
- **Finix Payments Disputes API** — {'$ref': 'api-descriptions/tags/disputes.md'}
- **Finix Payments Fee Profiles API** — {'$ref': 'api-descriptions/tags/fee-profiles.md'}
- **Finix Payments Files API** — {'$ref': 'api-descriptions/tags/files.md'}
- **Finix Payments Identities API** — {'$ref': 'api-descriptions/tags/identities.md'}
- **Finix Payments Instrument Updates API** — {'$ref': 'api-descriptions/tags/instrument-updates.md'}
- **Finix Payments Merchant Profiles API** — {'$ref': 'api-descriptions/tags/merchant-profiles.md'}
- **Finix Payments Merchants API** — {'$ref': 'api-descriptions/tags/merchants.md'}
- **Finix Payments Onboarding Forms API** — {'$ref': 'api-descriptions/tags/onboarding-forms.md'}
- **Finix Payments Payment Instruments API** — {'$ref': 'api-descriptions/tags/payment-instruments.md'}
- **Finix Payments Payout Profiles API** — {'$ref': 'api-descriptions/tags/payout-profiles.md'}
- **Finix Payments Settlements API** — {'$ref': 'api-descriptions/tags/settlements.md'}
- **Finix Payments Split Transfers API** — {'$ref': 'api-descriptions/tags/split-transfers.md'}
- **Finix Payments Transfers API** — {'$ref': 'api-descriptions/tags/transfers.md'}
- **Finix Payments Verifications API** — {'$ref': 'api-descriptions/tags/verifications.md'}
- **Finix Payments Webhooks API** — {'$ref': 'api-descriptions/tags/webhooks.md'}

## MCP servers (1)

- **Finix Payments MCP Server**

## Agentic access (1)

- **Finix Payments Agentic Access** — 91 operations · 39 acting

## Security (2)

- **Finix Payments Authentication** — http · 1 scheme
- **Finix Payments Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Payments, Payment Processing, Payment Facilitation, Embedded Finance, Marketplaces, ACH, Card Acceptance, Fintech, PCI DSS

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/finix-payments/). Scores are computed from the provider's own public artifacts under a published rubric.