API archive entry · source-reported
ClickSend REST API v3
This is the official API documentation for ClickSend.com Below you will find a current list of the available methods for clicksend. **NOTE**: You will need to create a free account to use the API. You can **Register Here**. # API URL The API should always be accessed over SSL. Base URL: `https://rest.clicksend.com/v3/` # Authentication Basic HTTP authentication should be used in the header. **Either:** `username`: Your API username `password`: Your API key ``` You can get your API credentials by clicking 'API Credentials' on the top right of the dashboard. ``` **OR** `username`: Your account username `password`: Your account password ``` These are the same credentials that you use to login to the dashboard. ``` ### Authorization Header The Authorization header is constructed as follows: 1. Username and password are combined into a string `username:password` 1. The resulting string is then encoded using Base64 encoding 1. The authorization method and a space i.e. "Basic " is then put before the encoded string. For example, if the user uses `Aladdin` as the username and `open sesame` as the password then the header is formed as follows: `Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZ
Plan the first integration safely
The access fields below come from the connected directory. Their likely implementation impact is explained without assuming provider-specific behavior.
Authentication
OAuth is reported. Confirm flows, scopes, consent, token lifetime, and refresh rules.
Transport
HTTPS is not confirmed. Do not send credentials or production data until secure transport is verified.
Browser access
CORS is unknown. Treat direct browser access as unconfirmed and test before choosing a client-only architecture.
First-request sequence
- Identify the current base URL, version, and endpoint for the use case.
- Confirm how credentials are issued and where they may be stored.
- Test success, invalid input, throttling, unavailable data, and timeouts.
- Record response fields, pagination, caching, and error shapes.
- Add monitoring, retries with backoff, and an appropriate fallback.
Questions to resolve before production
Pricing and quotas
Confirm current plans, free-tier limits, overages, and request ceilings.
Endpoint coverage
Check that the operations and response fields match the intended workload.
Reliability
Look for uptime history, a status page, support routes, and service commitments.
Data and privacy
Review retention, licensing, regional processing, and compliance requirements.
Versioning
Confirm the active version, change policy, deprecation window, and migration guidance.
Developer experience
Validate SDKs, examples, error formats, pagination, and test environments.
Source reference
This page separates source-reported facts from questions that need live provider verification.