ClickSend Communication Gateway Implementation

This document details the Model Context Protocol (MCP) server responsible for bridging AI models with ClickSend's external communication services, specifically supporting SMS dispatch and synthesized voice calling.

Core Capabilities

Text Message Transmission: Securely forward SMS payloads to any global telephone endpoint.
Automated Voice Calls: Initiate outgoing calls featuring dynamic content synthesized into speech.
Traffic Throttling: Internal safeguards enforce a ceiling of 5 operations per 60-second window.
Data Integrity Checks: Rigorous pre-transmission vetting of recipient identifiers and message payloads.
Exception Reporting: Robust mechanism for yielding informative error diagnostics and managing failure propagation.

Deployment Instructions

Necessary Components

A runtime environment supporting Node.js (version 16 minimum).
Valid API credentials procured from a registered ClickSend account.
An MCP client configured for interoperability.

Configuration Sequence

Source Code Retrieval: bash git clone https://github.com/J-Gal02/clicksend-mcp.git cd clicksend-mcp
Dependency Acquisition: bash npm install
Compilation Phase: bash npm run build

Client Integration Parameters

Modify your configuration file (cline_mcp_settings.json or claude_desktop_config.json) by incorporating the following structure. Ensure the file path points precisely to the compiled JavaScript entry point, and substitute placeholder credentials with your actual secrets.

{ "mcpServers": { "clicksend": { "command": "node", "args": ["/path/to/compiled/folder/clicksend-mcp/build/index.js"], "env": { "CLICKSEND_USERNAME": "your_registered_email@example.com", "CLICKSEND_API_KEY": "YOUR_SECURE_API_KEY_STRING" } } } }

Operational Reference

Exposed Methods

1. send_sms

Utility for broadcasting text messages to designated recipients.

Arguments: - to: Recipient identifier, formatted according to E.164 standards (e.g., +447123456789). - message: The textual content intended for delivery.

Invocation Example:

{ "name": "send_sms", "arguments": { "to": "+447123456789", "message": "Greetings from the integrated communication module!" } }

2. make_tts_call

Function to initiate a voice communication session where the provided text is converted to speech.

Arguments: - to: Target telephone identifier (E.164 format). - message: The script to be synthesized audibly. - voice: Selection for vocal timbre ('female' or 'male'; defaults to 'female' if unspecified).

Invocation Example:

{ "name": "make_tts_call", "arguments": { "to": "+447123456789", "message": "System initialization complete. Proceeding with task execution.", "voice": "male" } }

Request Volume Control

To maintain service stability and prevent unauthorized usage, a constraint of 5 API calls is enforced per minute. Exceeding this threshold will result in an error response that suggests an appropriate waiting period before retransmission.

Development Workflow

Utility Scripts

npm run build: Executes the TypeScript compiler to generate executable JavaScript artifacts.
npm run start: Launches the primary MCP service listener.
npm run dev: Initializes the TypeScript compiler in continuous watch mode for active development.

Project Hierarchy Overview

clicksend-mcp/ ├── src/ │ ├── index.ts # Core service bootstrap and protocol handling │ ├── client.ts # Encapsulation of ClickSend API interactions │ └── utils/ │ └── validation.ts # Utilities for schema and data integrity checks ├── build/ # Output directory for compiled code └── package.json # Project manifest and dependency registry

Exception Management

The gateway furnishes comprehensive feedback across various failure vectors:

Malformed telephone numbers.
Violations of message content policies.
Rate limitation breaches.
Authentication deficiencies with the upstream provider.
Failures related to network session integrity.

All error outputs are structured with standardized error codes and descriptive narratives to aid in debugging.

Future Enhancements Roadmap (TODO)

[ ] Support for multi-recipient messaging.
[ ] Functionality for custom Sender ID configuration.
[x] SMS Transmission Capability.
[x] Text-to-Speech Call Initiation.
[ ] Email Service Integration.
[ ] Handling of rich media payloads:
- [ ] Email attachments integration.
- [ ] Multimedia Messaging Service (MMS).
- [ ] Physical letter generation.
- [ ] Postcard service.
- [ ] Fax transmission support.
[ ] Integration for projecting message costs.
[ ] Retrieval of operational statistics.
[ ] Access to communication history logs.
[ ] Contact list management features.
[ ] Workflow automation trigger definitions.

Concluding Remarks

License Information

We welcome community contributions. Please submit any proposed modifications via a Pull Request.

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