Iii Effect System
A typed effect system for building composable, traceable functional pipelines in the style of Effect-TS. Each effect is a registered function with a single responsibility that chains to others via a trigger mechanism, with the entire pipeline traced through OpenTelemetry. HTTP triggers start the chain, errors stop propagation naturally, and you get end-to-end observability out of the box. This is worth looking at if you're building workflows that need proper error handling and tracing without wrestling with promise chains or hand-rolling instrumentation. The 17.5K stars suggest a solid community, though the terse documentation means you'll need to read the code to understand how effects compose in practice.
- skills.sh installs
- 192
- GitHub stars
- 18.9K
- last updated
- Aug 21, 2026
Install
$ npx -y skills add iii-hq/iii --skill iii-effect-system --agent claude-codeInstalls into .claude/skills of the current project.
Files
A typed effect system for building composable, traceable functional pipelines in the style of Effect-TS. Each effect is a registered function with a single responsibility that chains to others via a trigger mechanism, with the entire pipeline traced through OpenTelemetry. HTTP triggers start the chain, errors stop propagation naturally, and you get end-to-end observability out of the box. This is worth looking at if you're building workflows that need proper error handling and tracing without wrestling with promise chains or hand-rolling instrumentation. The 17.5K stars suggest a solid community, though the terse documentation means you'll need to read the code to understand how effects compose in practice.
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- Repository
- github.com/iii-hq/iii
- First seen
- Jun 3, 2026
More from iii-hq/iii
All 30- Iii Reactive Backend192
- Iii Python Sdk190
- Iii Rust Sdk188
- Iii Queue Processing183
- Iii Cron Scheduling180
- Iii Http Endpoints180
- Iii State Management180
- Iii Realtime Streams179
- Iii Dead Letter Queues178
- Iii Http Middleware178
- Iii State Reactions178
- Iii Engine Config4.9K
- Iii Getting Started4.9K
- Iii Error Handling4.7K
- Iii Architecture Patterns4.7K
- Iii Core Primitives4.7K
- Iii Sdk Reference4.7K
- Iii Observability195
- Iii Browser Sdk194
- Iii Trigger Actions194
- Iii Workflow Orchestration194
- Iii Agentic Backend193
- Iii Channels193
- Iii Custom Triggers193
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