stitch::upload-to-stitch

1# Upload-to-Stitch
2 
3Upload local assets (images, mockups, HTML, and markdown files) to a Stitch project using the
4provided upload script, which bypasses the MCP tool's base64 output token limits.
5 
6> [!NOTE]
7> The AI model cannot upload files via MCP tools directly because the base64
8> encoding of even a small file exceeds the model's output token limit (~16K
9> tokens). This script reads the file and sends it directly over HTTP.
10 
11## Steps
12 
13### 1. Identify Target Project
14 
15Use `list_projects` to find the correct `projectId`.
16 
17### 2. Get the API Key
18 
19Locate your active MCP server configuration file and extract the API key:
20- **Antigravity**: `.gemini/antigravity/mcp_config.json` or `.gemini/jetski/mcp_config.json`
21- **Gemini CLI**: `~/.gemini/settings.json` or `~/.gemini/extensions/Stitch/gemini-extension.json`
22- **Claude Code**: `~/.claude.json`
23 
24Extract:
25- **API Key**: From the `X-Goog-Api-Key` header or auth argument
26- **MCP URL** (optional): From the `httpUrl` or endpoint argument (defaults to
27  `https://stitch.googleapis.com`)
28 
29> [!IMPORTANT]
30> If you cannot find the API key in any of these locations, or if you cannot access these files, you MUST ask the user to provide the Stitch API key. Do not proceed without a valid API key.
31 
32### 3. Run Upload Script
33 
34> [!WARNING]
35> **Checkpoint — User Confirmation Required.**
36> Before running the upload script, you **MUST** pause and present the file(s)
37> to be uploaded (paths, sizes, and types) to the user and wait for explicit
38…