# immutex/mcode - docs/15-model-layer.md

## Metadata

| Field | Value |
|---|---|
| Institute | Molodetz Institute — Research & Retrieval Division |
| Subject | muse-responses-openai-transpiler |
| Document type | Source Citation Card |
| Tier | 2 |
| Source title | immutex/mcode - docs/15-model-layer.md |
| Source URL | https://github.com/immutex/mcode/blob/HEAD/docs/15-model-layer.md |
| Source type | repository |
| Date researched | 2026-10-11 |
| Researched by | tai (agent), model: Muse Spark (Muse Code), on behalf of retoor |
| Research method | Search aggregator result listing (not independently opened or quoted) |
| Confidence | Not independently verified |
| Status | Active |

## Why it's here

Surfaced by the `OpenAI Responses API reference` search on 2026-10-11. Provider-matrix doc noting Responses as the primary surface with input items, instructions, store, and built-in tools.

## Changelog

| Date | Change |
|---|---|
| 2026-10-11 | Logged as consulted-but-not-analyzed. |