stories.yaml — an open specification for software requirements, enforced by CI.
Connect Runs on your machine
claude mcp add mcp-server -e PROTOTYPER_API_KEY=<PROTOTYPER_API_KEY> -e PROTOTYPER_PROJECT_ID=<PROTOTYPER_PROJECT_ID> -e LOCUS_STORIES_PATH=<LOCUS_STORIES_PATH> -- npx -y @locus-dev/[email protected]{
"mcpServers": {
"mcp-server": {
"command": "npx",
"args": [
"-y",
"@locus-dev/[email protected]"
],
"env": {
"PROTOTYPER_API_KEY": "<PROTOTYPER_API_KEY>",
"PROTOTYPER_PROJECT_ID": "<PROTOTYPER_PROJECT_ID>",
"LOCUS_STORIES_PATH": "<LOCUS_STORIES_PATH>"
}
}
}
}{
"mcpServers": {
"mcp-server": {
"command": "npx",
"args": [
"-y",
"@locus-dev/[email protected]"
],
"env": {
"PROTOTYPER_API_KEY": "<PROTOTYPER_API_KEY>",
"PROTOTYPER_PROJECT_ID": "<PROTOTYPER_PROJECT_ID>",
"LOCUS_STORIES_PATH": "<LOCUS_STORIES_PATH>"
}
}
}
}{
"servers": {
"mcp-server": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@locus-dev/[email protected]"
],
"env": {
"PROTOTYPER_API_KEY": "<PROTOTYPER_API_KEY>",
"PROTOTYPER_PROJECT_ID": "<PROTOTYPER_PROJECT_ID>",
"LOCUS_STORIES_PATH": "<LOCUS_STORIES_PATH>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
PROTOTYPER_API_KEYOptional, secret | Optional: Locus API key for cloud team sync. Prefix ptmcp_. Not required for local stories.yaml mode. |
PROTOTYPER_PROJECT_IDOptional | Optional: Locus project UUID for cloud team sync. |
LOCUS_STORIES_PATHOptional | Optional: Explicit path to stories.yaml. Defaults to auto-discovery from project root. |
Details
| Package | @locus-dev/[email protected] (NPM, stdio) |
| First published | 4 May 2026 |
| Last updated | 4 May 2026 |
| Registry name | io.github.jonybur/mcp-server |
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