# ADR-001: Homeserver Selection — Conduit

**Status**: Accepted  
**Date**: 2026-04-05  
**Deciders**: Ezra (architect), Timmy Foundation  
**Scope**: Matrix homeserver for human-to-fleet encrypted communication (#166, #183)

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## Context

We need a Matrix homeserver to serve as the sovereign operator surface. Options:
- **Synapse** (Python, mature, resource-heavy)
- **Dendrite** (Go, lighter, beta federation)
- **Conduit** (Rust, lightweight, SQLite support)

## Decision

Use **Conduit** as the Matrix homeserver.

## Consequences

| Positive | Negative |
|----------|----------|
| Low RAM/CPU footprint (~200 MB) | Smaller ecosystem than Synapse |
| SQLite option eliminates Postgres ops | Some edge-case federation bugs |
| Single binary, simple systemd service | Admin tooling less mature |
| Full federation support | |

## Alternatives Considered

- **Synapse**: Rejected due to Python overhead and mandatory Postgres complexity.
- **Dendrite**: Rejected due to beta federation status; we need reliable federation from day one.

## References

- Issue: [#166](http://143.198.27.163:3000/Timmy_Foundation/timmy-config/issues/166)
- Issue: [#183](http://143.198.27.163:3000/Timmy_Foundation/timmy-config/issues/183)
- Conduit docs: https://conduit.rs/