Muse Spark for Copilot Chat

# Muse Spark 1.3 for Copilot Chat

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[VS Code Marketplace](https://marketplace.visualstudio.com/items?itemName=LukeSpine.meta-spark-for-copilot) · [Open VSX](https://open-vsx.org/extension/LukeSpine/meta-spark-for-copilot) · [Releases](https://github.com/spinespine/meta-spark-for-copilot/releases)
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Adds **Muse Spark 1.3** (plus 1.2, 1.1, and discounted Contributor variants) to the Copilot Chat model picker. Uses your Meta API key (BYOK).

## Features

- Model `muse-spark-1.3` (1,048,576 context, 131,072 max output) — the latest checkpoint, tuned for agentic workflows with improved coding
- Model `muse-spark-1.3-contributor` — same checkpoint, heavily discounted Contributor tier
- Model `muse-spark-1.2` / `muse-spark-1.1` — earlier checkpoints, still supported
- Multimodal input: text, image, video, PDF (for audio input, use 1.2 — 1.3 audio support is not fully ready)
- Native vision via base64 `image_url` content parts (no proxy)
- Reasoning effort: `minimal`, `low`, `medium` (default), `high`, `xhigh`, and `max` (Standard-tier `muse-spark-1.3` only)
- Works with Copilot agent mode, tools, instructions, MCP, and skills via `LanguageModelChatProvider`

## Requirements

- VS Code 1.116+
- GitHub Copilot (Free, Pro, or Enterprise)
- Meta API key from [dev.meta.ai](https://dev.meta.ai/) (`LLM|...`)

## Install

1. Install from the [VS Code Marketplace](https://marketplace.visualstudio.com/items?itemName=LukeSpine.meta-spark-for-copilot) or [Open VSX](https://open-vsx.org/extension/LukeSpine/meta-spark-for-copilot)
2. Command Palette → **Meta Spark: Set API Key**
3. Open Copilot Chat and select **Muse Spark 1.3**

## Configuration

| Setting | Default | Description |
|---|---|---|
| `meta-spark-copilot.baseUrl` | `https://api.meta.ai/v1` | API base URL |
| `meta-spark-copilot.maxCompletionTokens` | `0` | Max output tokens (`0` = API default) |
| `meta-spark-copilot.modelIdOverrides` | official IDs | Override model IDs for proxies |
| `meta-spark-copilot.debugMode` | `minimal` | `minimal` / `metadata` / `verbose` |
| `meta-spark-copilot.experimental.stabilizeToolList` | `false` | Experimental tool-list stabilization |

## Pricing and limits

Standard tier (`muse-spark-1.1`, `muse-spark-1.2`, `muse-spark-1.3`):

- Pricing: $1.25 / 1M input, $0.15 / 1M cached input, $4.25 / 1M output
- Rat