# Source: Official MCP Reference Servers Mapping

- **Source**: User Directive (Arif)
- **Epoch**: 2026-04-11T03:39+08
- **Context**: Mapping 7 reference servers to arifOS functional architecture.

| MCP Server | arifOS Role | Floor / Pipeline Touch |
| :--- | :--- | :--- |
| **Everything** | Integration test harness — validates stack | F2 truth-band verification, 000 INIT scan |
| **Fetch** | External intelligence ingestion | F9 Anti-Hantu (grounded data), 111 THINK feed |
| **Filesystem** | Sovereign vault access | F1 reversible ops, F8 law/safety, 888 AUDIT |
| **Git** | Version integrity layer | F2 evidence trail, F11 auth |
| **Memory** | Knowledge graph persistence | F3 alignment, 333 EXPLORE state recall |
| **Sequential Thinking** | Pipeline engine mirror | 111 THINK → 777 REASON → 888 AUDIT chain |
| **Time** | Epoch anchor | 000 INIT epoch, 999 SEAL telemetry emit |

## Suggested Integration Order

1. `Time`
2. `Filesystem`
3. `Git`
4. `Memory`
5. `Fetch`
6. `Sequential Thinking`
7. `Everything`

*Witness: human: arif, ai: perplexity, earth: modelcontextprotocol/servers*
