Mock sample for your project: Sonar Trading API

Stock and Forex Data and Realtime Quotes

An API for accessing NaviPlan plan data for a client.

GOV.UK Pay API (This version is no longer maintained. See openapi/publicapi_spec.json for latest API specification)

Chaingateway.io
REST API to build the bridge between Ethereum and the real world
Please check out our website for detailed information about this API.
To use our API, you need an API Key (Described as Authorization header in the examples below).
To get one, please create an account on our website.
For our internal documentation, please check out our Docs Site.
If you need help with integrating our API in your application, you can reach us via email or join our official Telegram group.

Currency Authority: Exchange Rate of 1453 country currencies and crypto currencies

Introduction
OpenFinTech.io is an open database that comprises of standardized primary data for FinTech industry.
It contains such information as geolocation data (countries, cities, regions), organizations, currencies (national, digital, virtual, crypto), banks, digital exchangers, payment providers (PSP), payment methods, etc.
It is created for communication of cross-integrated micro-services on "one language". This is achieved through standardization of entity identifiers that are used to exchange information among different services.
UML
UML Domain Model diagram you can find here.
Persistence
Entities are updated not more than 1 time per day.
Terms and Conditions
This OpenFinTech.io is made available under the Open Database License.
Any rights in individual contents of the database are licensed under the Database Contents License.
Contacts
For any questions, please email - [email protected]
Or you can contact us at Gitter
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Get Started
If you use POSTMAN or similar program which can operate with swagger`s files - just download our spec and import it. Also you can try live API demo.
Overview
The OpenFinTech API is organized around REST. Our API has predictable, resource-oriented URLs, and uses HTTP response codes to indicate API errors.
API is based on JSON API standard. JSON is returned by all API responses, including errors, although our API libraries convert responses to appropriate language-specific objects.
JSON API requires use of the JSON API media type (application/vnd.api+json) for exchanging data.
Additional Request Headers
ACCEPT HEADER
Your requests should always include the header:
If argument height or width is missing API returns original image with real sizes.
Errors
API uses conventional HTTP response codes to indicate the success or failure of an API request. In general, codes in the 2xx range indicate success, codes in the 4xx range indicate an error that failed given the information provided (e.g., a required parameter was omitted, etc.), and codes in the 5xx range indicate an error with OpenFinTech's servers (these are rare).
| Code | Description |
|------|-------------|
| 200 - OK | Everything worked as expected. |
| 400 - Bad Request | The request was unacceptable, often due to missing a required parameter. |
| 401 - Unauthorized | No valid API key provided. |
| 402 - Request Failed | The parameters were valid but the request failed. |
| 404 - Not Found | The requested resource doesn't exist. |
| 409 - Conflict | The request conflicts with another request (perhaps due to using the same idempotent key). |
| 429 - Too Many Requests | Too many requests hit the API too quickly. We recommend an exponential backoff of your requests. |
| 500, 502, 503, 504 - Server Errors | Something went wrong on OpenFinTech's end. (These are rare.) |

The Up API gives you programmatic access to your balances and
transaction data. You can request past transactions or set up
webhooks to receive real-time events when new transactions hit your
account. It’s new, it’s exciting and it’s just the beginning.

Overview
Tradematic Cloud is a trading infrastructure for building investment services.
It’s a trading engine + API + ready-made adapters to stock and forex brokers, crypto exchanges, and market data providers.
You can use it as a cloud API, or you can deploy it on your servers.
How to use Tradematic Cloud API
Sign up at tradematic.cloud. After signing up, you will receive your API key.
Authorization
Add the 'X-API-KEY' header with your API key to each request.
Examples of writing code with Tradematic Cloud API
Examples are available at tradematic.cloud.
Swagger (.yaml) File
Swagger (.yaml) file can be found here.

Welcome to the Big Red Cloud API
This API enables programmatic access to Big Red Cloud data.
We have used Swagger to auto generate the API documentation on this page, and it also enables direct interaction with the API in this page.
To get started, you will require an API Key - check out our guide at https://www.bigredcloud.com/support/generating-api-key-guide/ for information on how to get one.
Use the 'Enter API Key' button below to enter your API key and start interacting with your Big Red Cloud data right on this page.
The API key will be stored in your browsers local storage for convenience, but you will be able to delete it at any time if you wish.
For additional information on the API, check out our support article at https://www.bigredcloud.com/support/api/

The future of fintech.