# Seine — Agentic (Deep)Search Orchestration

> A search returns an answer. Seine returns the truth.

## What is Seine?

Seine is an open-source agentic search orchestration plugin for Claude Code and Claude Cowork. It coordinates 21 specialized AI agents across a gated research pipeline to produce calibrated, adversarially-tested research dossiers.

## How it works

Seine runs a 3-phase pipeline for every query:

1. **Phase A — Discovery**: Hunter and Scout agents search across 9 domains (web, academic, OSINT, social, intel, entity, CRM, memory, vision) to build an evidence map.
2. **Gate A — Validation**: A validator agent checks schema compliance and confidence. FAIL stops the pipeline.
3. **Phase B — Analysis**: Skeptic and Referee agents challenge claims and resolve conflicts between sources.
4. **Gate B — Validation**: Second validation gate. FAIL stops the pipeline.
5. **Phase C — Synthesis**: Adversarial reviewer red-teams the findings. Confidence quantifier produces calibrated scores using: (evidence x 0.40) + (source_quality x 0.25) + (recency x 0.20) + (agreement x 0.15).

A 7-member deliberative council provides multi-perspective analysis: Synthesizer, Contrarian, Lateral Hunter, Source Critic, Pattern Spotter, Blind Spot detector, and Temporal analyst.

## Key features

- 21 specialized AI agents
- 7-member deliberative council
- 3-phase gated research pipeline with PASS / PASS_WITH_NOTES / FAIL verdicts
- Calibrated confidence scoring per finding
- Evidence vocabulary: SOLID (1.0), SOFT (0.6), SHAKY (0.3), UNKNOWN (0.0)
- Source quality tiers: HIGH, MEDIUM, LOW, UNKNOWN
- 9 search domains
- Artifact persistence with numbered file output

## Depth levels

- **skim**: Quick web search (1-2 agents, ~30 seconds)
- **dig**: Standard multi-source search (5-8 agents, ~5 minutes)
- **drill**: Deep multi-round research (all 21 agents, ~30-60 minutes)
- **siege**: Maximum depth with opus-class models (all 21 agents, ~60-120 minutes)

## Installation

```
# Claude Code
/plugin install seine

# Manual
git clone https://github.com/adambkovacs/seine-agentic-search-orchestrator-plugin
```

## Links

- Website: https://seinesearch.com
- GitHub: https://github.com/adambkovacs/seine-agentic-search-orchestrator-plugin
- Example dossier: https://seinesearch.com/showcase.html
- License: MIT