MCP
A2AWhat is a Unified API?
A unified API provides a single, standardized interface to interact with multiple third-party providers. Instead of learning each provider’s unique API format, authentication scheme, and data model, you write code once, and StackOne handles the differences. What StackOne normalizes:- Data models – Consistent field names and structures across providers (e.g.,
employeesin BambooHR, Workday, and Personio all return the same schema) - Authentication – OAuth, API keys, and tokens are managed per-provider; you just pass an
x-account-idheader - Pagination – Cursor-based pagination works the same regardless of whether the provider uses offsets, pages, or cursors
- Error formats – Standardized error responses with provider-specific details when available
Benefits of the Messaging API
Real-Time Data Synchronization
Real-Time Data Synchronization
StackOne’s APIs support real-time data polling, allowing for immediate updates and synchronization across platforms.
Privacy-First Design Ensuring Compliance
Privacy-First Design Ensuring Compliance
With a focus on security, StackOne’s architecture avoids unnecessary data storage, maintaining compliance with data protection regulations.
Synthetic and Native Webhooks for Updates
Synthetic and Native Webhooks for Updates
Both synthetic and native webhooks, enable real-time notifications for tickets and comment events.
Comprehensive Integration Coverage
Comprehensive Integration Coverage
StackOne offers pre-built connectors with a wide range of platforms, simplifying the integration process.
Key Features
| Feature | Description |
|---|---|
| Conversation Management | Easily create and manage conversations across multiple messaging platforms with unified fields |
| Real-Time Message Sync | Keep messages, threads, and statuses synchronized across all integrated systems |
| Real-Time Webhooks | Receive instant notifications for new messages, edits, and conversation updates |
| Participant Management | Manage participants, roles, and permissions within conversations |
| Attachments Support | Send and receive files, images, and documents within messages |
StackOne SDKs & OpenAPI Specification
Use our official SDKs for faster integration. Build with language-native libraries. Full list here.
OpenAPI Specification
Popular SDKs
Entity Model and Relationships
The following diagram illustrates the key entities within the Messaging API:Entity Definitions
| Entity | Description |
|---|---|
| Conversation | A thread or group chat where participants exchange messages. |
| Message | Individual communication sent within a conversation, can include text or attachments. |
| Participant | A user or entity involved in a conversation, with roles and permissions. |
| Attachments | Files and documents associated with messages. |