Files
fusion/plugins/fusion-plugin-hermes-runtime/README.md
Fusion acceca7fe5 feat(FN-2263): merge fusion/fn-2263 (auto-resolved)
- docs(FN-2263): update README with scaffolded scope and deferral documentation
- test(FN-2263): verify hermes runtime plugin build and tests
- feat(FN-2263): implement plugin entrypoint with runtime registration shell
- feat(FN-2263): scaffold Hermes runtime plugin package
- test(FN-2256): add mocks for createResolvedAgentSession in tests
- docs(FN-2256): update architecture docs and add changeset
- fix(FN-2256): fix lint errors and TypeScript issues
- feat(FN-2256): add runtime selection regression tests — Step 4
- feat(FN-2256): route engine session creation through runtime resolver — Step 3
- feat(FN-2256): extend PluginRunner runtime lookup surface — Step 2
- feat(FN-2256): add runtime abstraction and resolver — Step 1
2026-04-22 14:33:01 -07:00

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Markdown

# Hermes Runtime Plugin
> **Status:** Scaffolded - Full implementation deferred to FN-2264
Provides a Hermes AI runtime plugin for Fusion, enabling AI agent execution capabilities for task automation.
## Overview
This plugin registers the Hermes runtime with the Fusion plugin system. The Hermes runtime is designed to provide AI-powered task execution capabilities for Fusion tasks.
**Note:** The runtime behavior is intentionally deferred. Any runtime invocation will return a "not implemented" signal referencing FN-2264 for the full implementation.
## Features
- **Hermes Runtime Registration**: Registers the Hermes runtime with the Fusion plugin system
- **Runtime Discovery**: Exposes runtime metadata for plugin discovery pipeline
- **Runtime Factory**: Provides factory function for runtime instance creation (placeholder)
## Installation
### Option 1: Copy to plugins directory
```bash
cp -r fusion-plugin-hermes-runtime ~/.fusion/plugins/
```
### Option 2: Install via CLI
```bash
fn plugin install /path/to/fusion-plugin-hermes-runtime
```
## Current Status
| Component | Status |
|-----------|--------|
| Plugin Scaffold | ✅ Complete |
| Runtime Registration | ✅ Complete |
| Runtime Behavior | ⏳ Deferred to FN-2264 |
## Runtime Registration
The plugin registers a runtime with the following metadata:
- **Runtime ID:** `hermes-runtime`
- **Name:** `Hermes AI Runtime`
- **Description:** AI agent execution runtime for Fusion tasks
- **Version:** `0.1.0`
### Deferred Implementation
The runtime factory currently returns a placeholder object. When `execute()` is called, it throws an error referencing FN-2264:
```
Error: Hermes runtime is not yet implemented. Full implementation deferred to FN-2264.
```
## Development
```bash
# Install dependencies
pnpm install
# Run tests
pnpm test
# Build
pnpm build
```
### Test Coverage
The plugin includes comprehensive tests covering:
- Plugin manifest identity verification
- Runtime registration presence and metadata consistency
- Deferred implementation behavior (placeholder, error on execute)
- Plugin lifecycle hooks (onLoad, onUnload)
## API
### Plugin Manifest
```json
{
"id": "fusion-plugin-hermes-runtime",
"name": "Hermes Runtime Plugin",
"version": "0.1.0",
"description": "Hermes AI runtime plugin for Fusion",
"author": "Fusion Team",
"homepage": "https://github.com/gsxdsm/fusion",
"runtime": {
"runtimeId": "hermes-runtime",
"name": "Hermes AI Runtime",
"description": "AI agent execution runtime for Fusion tasks",
"version": "0.1.0"
}
}
```
### Exports
The plugin exports the following for testing and verification:
- `default` - The FusionPlugin instance
- `hermesRuntimeMetadata` - Runtime manifest metadata object
- `hermesRuntimeFactory` - Factory function for creating runtime instances
- `HERMES_RUNTIME_ID` - Runtime ID constant (`"hermes-runtime"`)
## Related
- [FN-2264](https://github.com/gsxdsm/fusion/issues/FN-2264) - Full Hermes runtime implementation
## License
MIT