---
title: liblogos
type: Developer Tool
priority: 0
category: Developer Tools
---

C++ SDK library providing the core API for developing Logos modules, enabling inter-module communication and access to platform services.

> [!ai-generated]
> This entire document was generated by an LLM and has not yet been human-reviewed.

## FURPS+

### Functionality

- Provide module development framework with lifecycle management
- Enable inter-module communication via Qt Remote Objects
- Abstract platform services (storage, messaging, networking)
- Support plugin architecture for extensibility
- Provide cryptographic primitives and key management APIs

### Usability

- Offer clear API documentation and examples
- Include CMake integration for build systems
- Provide module templates and scaffolding tools
- Support multiple platforms (Linux, macOS, Windows)

### Reliability

- Ensure process isolation between modules
- Provide graceful error handling and recovery
- Support hot-reloading of modules during development
- Enable robust IPC with automatic reconnection

### Performance

- Minimize overhead for inter-module communication
- Support asynchronous operations to prevent blocking
- Optimise for low-latency message passing
- Enable parallel execution of independent modules

### + (Privacy, Anonymity, Censorship-Resistance)

- **Privacy**: Built-in support for encrypted communication between modules
- **Security**: Sandboxed module execution with controlled permissions
- **Censorship-Resistance**: Enable development of censorship-resistant applications
- **Modularity**: Isolate sensitive operations in separate processes

## Demand Validation

**Potential Users:** Core platform developers, module developers, third-party contributors

**Use Cases:**

- Building new Logos Core modules (wallet, consensus, networking)
- Creating custom blockchain extensions
- Developing privacy-preserving application backends
- Integrating external services with Logos infrastructure

## Possible Implementation

- **IPC Layer**: Qt Remote Objects for type-safe inter-process communication
- **Module API**: Abstract base classes for module lifecycle hooks
- **Service Registry**: Centralized discovery of available modules and services
- **Build System**: CMake with module templates and packaging support
- **Platform Abstraction**: Cross-platform APIs for filesystem, networking, crypto

## Technical Validation

**Risks & Challenges:**

- Maintaining API stability across platform versions
- Balancing flexibility with security constraints
- Documentation quality for third-party developers
- Performance overhead of process isolation
- Cross-platform compatibility and testing

**Integration Points:**

- [[engineering/infrastructure_essentials/logos_storage|Logos Storage]] client integration
- [[engineering/infrastructure_essentials/logos_messaging|Logos Messaging]] client integration
- Logos Core runtime for module hosting
- Operating system services (process management, IPC)