Finix · OpenAPI Overlay 1.0.0

API Evangelist enhancements for Finix API

3 actions 3 updates update extends openapi/finix-openapi-original.yml

Derived by API Evangelist Built from the contracts Finix publishes. Finix did not publish this file.

View Overlay File View on GitHub Overlay Specification

What the actions change

x-apievangelist-enrichedx-apievangelist-providerx-apievangelist-live-serverx-apievangelist-conventionsx-apievangelist-artifacts

Targets 2

$.info

$.servers

OpenAPI Overlay

overlay: 1.0.0
info:
  title: API Evangelist enhancements for Finix API
  version: 1.0.0
extends: openapi/finix-openapi-original.yml
x-generated: '2026-07-19'
x-method: generated
actions:
- target: $.info
  update:
    x-apievangelist-enriched: true
    x-apievangelist-provider: finix
    x-apievangelist-live-server: https://finix.live-payments-api.com
    x-apievangelist-conventions:
      authentication: HTTP Basic (RFC 7617)
      idempotency_field: idempotency_id
      pagination: cursor (next_cursor + limit)
      version_header: Finix-Version (YYYY-MM-DD, current 2022-02-01)
      error_envelope: HAL (_embedded.errors[])
      hypermedia: HAL / HATEOAS
- target: $.servers
  update:
  - description: Live server for production
    url: https://finix.live-payments-api.com
- target: $.info
  update:
    x-apievangelist-artifacts:
      authentication: authentication/finix-authentication.yml
      conventions: conventions/finix-conventions.yml
      errors: errors/finix-problem-types.yml
      decline_codes: errors/finix-decline-codes.yml
      data_model: data-model/finix-data-model.yml
      sandbox: sandbox/finix-sandbox.yml
      webhooks: asyncapi/finix-events-asyncapi.yml
      mcp: https://docs.finix.com/mcp

Work with this as data

Every overlay here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for openapi overlays

4 MCP tools reach this

find_overlaysBrowse and filter every overlay in the catalog.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This overlay

curl "https://apis.io/api/v1/overlays/finix-openapi-overlay"

All openapi overlays

curl "https://apis.io/api/v1/overlays?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.