##### API Overview - Accounts list and balance - Transaction overview (also for saving accounts) - Payments import - Statement list and download - FX rates ##### Authentication Before making a call to Premium API, you need to register your app at our _Developer portal_. This is where you get the **ClientID** that your application must send in the request as `X-IBM-Client-Id`. This is the key that grants your app access to the API. However, this may not be enough. Your application needs to use mTLS to call most operations here. Thus, you not only need _https_ but also a client certificate issued by us. The exception is two operations for FX rates that are accessible also without a client certificate. Each bank client/user can issue several certificates. Each certificate can permit different sets of operations (http methods) on different bank accounts. All this must be configured in Internet Banking first by each bank client/user (bank clients need to look under _Settings_ and do not forget to download the certificate at the last step). The certificate is downloaded in **PKCS#12** format as **\*.p12** file and protected by a password chosen by the bank client/user. Yes, your app needs the password as well to get use of the **\*p12** file for establishing mTLS connection to the bank. Client certificates issued in Internet Banking for bank clients/users have limited validity (e.g. **5 years**). However, **each year** certificates are automatically blocked and bank client/user must unblock them in Internet Banking. It is possible to do it in advance and prolong the time before the certificate is blocked. Your app should be prepared for these scenarios and it should communicate such cases to your user in advance to provide seamless service and high user-experience of your app. ##### Rate Limiting The number of requests in each API operation is limited to 10 per client per sliding second and 5000 per client per sliding day. The exception is the 'Download Statement' operation with the limits lowered to 5 per client per sliding second and 1500 per client per sliding day. This is because it transports potentially sizeable binary files. The consumer must be able to handle HTTP status 429 in case of exceeding these limits. Response headers `X-RateLimit-Limit-Second` and `X-RateLimit-Limit-Day` show the actual limits configured for the specific operation. Response headers `X-RateLimit-Remaining-Second` and `X-RateLimit-Remaining-Day` are returned to help prevent the limits from being exceeded. ##### Notes Be aware, that in certain error situations, API can return specific error structures along with 5xx status code, which is not explicitely defined below. ##### Quick Start Client Feel free to download a simple Java client that gives you quick access to our API.

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struktal/struktal-phpmailer-wrapper

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PHP wrapper library to extract common settings for a PHPMailer object instance

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stancl/laravel-hasmanywithinverse

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Define HasMany while also setting the inverse relationship in Laravel.

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sourcebroker/configs

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Read configs based on TYPO3_CONTEXT settings.

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sendx/sendx-php-sdk

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# SendX REST API Documentation ## 🚀 Introduction The SendX API is organized around REST principles. Our API has predictable resource-oriented URLs, accepts JSON-encoded request bodies, returns JSON-encoded responses, and uses standard HTTP response codes, authentication, and verbs. **Key Features:** - 🔒 **Security**: Team-based authentication with optional member-level access - 🎯 **Resource-Oriented**: RESTful design with clear resource boundaries - 📊 **Rich Data Models**: Three-layer model system (Input/Output/Internal) - 🔗 **Relationships**: Automatic prefix handling for resource relationships - 📈 **Scalable**: Built for high-volume email marketing operations ## 🏗️ Architecture Overview SendX uses a three-layer model architecture: 1. **Input Models** (`RestE*`): For API requests 2. **Output Models** (`RestR*`): For API responses with prefixed IDs 3. **Internal Models**: Core business logic (not exposed in API) ## 🔐 Security & Authentication SendX uses API key authentication: ### Team API Key ```http X-Team-ApiKey: YOUR_TEAM_API_KEY ``` - **Required for all requests** - Team-level access to resources - Available in SendX Settings → Team API Key ## 🆔 Encrypted ID System SendX uses encrypted IDs for security and better developer experience: - **Internal IDs**: Sequential integers (not exposed) - **Encrypted IDs**: 22-character alphanumeric strings - **Prefixed IDs**: Resource-type prefixes in API responses (`contact_`) ### ID Format **All resource IDs follow this pattern:** ``` _ ``` **Example:** ```json { "id": "contact_BnKjkbBBS500CoBCP0oChQ", "lists": ["list_OcuxJHdiAvujmwQVJfd3ss", "list_0tOFLp5RgV7s3LNiHrjGYs"], "tags": ["tag_UhsDkjL772Qbj5lWtT62VK", "tag_fL7t9lsnZ9swvx2HrtQ9wM"] } ``` ## 📚 Resource Prefixes | Resource | Prefix | Example | |----------|--------|---------| | Contact | `contact_` | `contact_BnKjkbBBS500CoBCP0oChQ` | | Campaign | `campaign_` | `campaign_LUE9BTxmksSmqHWbh96zsn` | | List | `list_` | `list_OcuxJHdiAvujmwQVJfd3ss` | | Tag | `tag_` | `tag_UhsDkjL772Qbj5lWtT62VK` | | Sender | `sender_` | `sender_4vK3WFhMgvOwUNyaL4QxCD` | | Template | `template_` | `template_f3lJvTEhSjKGVb5Lwc5SWS` | | Custom Field | `field_` | `field_MnuqBAG2NPLm7PZMWbjQxt` | | Webhook | `webhook_` | `webhook_9l154iiXlZoPo7vngmamee` | | Post | `post_` | `post_XyZ123aBc456DeF789GhI` | | Post Category | `post_category_` | `post_category_YzS1wOU20yw87UUHKxMzwn` | | Post Tag | `post_tag_` | `post_tag_123XyZ456AbC` | | Member | `member_` | `member_JkL012MnO345PqR678` | ## 🎯 Best Practices ### Error Handling - **Always check status codes**: 2xx = success, 4xx = client error, 5xx = server error - **Read error messages**: Descriptive messages help debug issues - **Handle rate limits**: Respect API rate limits for optimal performance ### Data Validation - **Email format**: Must be valid email addresses - **Required fields**: Check documentation for mandatory fields - **Field lengths**: Respect maximum length constraints ### Performance - **Pagination**: Use offset/limit for large datasets - **Batch operations**: Process multiple items when supported - **Caching**: Cache responses when appropriate ## 🛠️ SDKs & Integration Official SDKs available for: - [Golang](https://github.com/sendx/sendx-go-sdk) - [Python](https://github.com/sendx/sendx-python-sdk) - [Ruby](https://github.com/sendx/sendx-ruby-sdk) - [Java](https://github.com/sendx/sendx-java-sdk) - [PHP](https://github.com/sendx/sendx-php-sdk) - [JavaScript](https://github.com/sendx/sendx-javascript-sdk) ## 📞 Support Need help? Contact us: - 💬 **Website Chat**: Available on sendx.io - 📧 **Email**: [email protected] - 📚 **Documentation**: Full guides at help.sendx.io --- **API Endpoint:** `https://api.sendx.io/api/v1/rest` [](https://god.gw.postman.com/run-collection/33476323-44b198b0-5219-4619-a01f-cfc24d573885?action=collection%2Ffork&source=rip_markdown&collection-url=entityId%3D33476323-44b198b0-5219-4619-a01f-cfc24d573885%26entityType%3Dcollection%26workspaceId%3D6b1e4f65-96a9-4136-9512-6266c852517e)

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