Stable Baseline — Claude Code MCP server: how to install
Connects your coding agent to an interactive workspace with documents, over 40 diagram formats, and databases. Handy for organizing team knowledge straight from the terminal.
claude mcp add --transport http stable-baseline https://api.stablebaseline.io/functions/v1/cloud-serve/mcpWhat Stable Baseline does
The server links your coding agent to an external company workspace containing documentation, roadmaps, and a knowledge graph. It provides 222 tools across 20 distinct categories. An agent can draft specs, modify folder structures, and render over 40 visual formats, including Mermaid, BPMN 2.0, and PlantUML.
Communication happens remotely over Streamable HTTP with an SSE fallback at https://api.stablebaseline.io/functions/v1/cloud-serve/mcp. Authentication accepts either an interactive OAuth 2.1 flow on the first call or a persistent API token starting with sta_*.
Database access remains turned off by default when creating new API keys. You must tick the database permission box in the developer settings before letting the agent query or update structured tables.
What it helps with
- generate architectural diagrams in Mermaid or PlantUML from code
- maintain workspace documentation and project roadmaps
- query and edit structured databases through conversational prompts
- inspect company hierarchy and folder structures via AI
Example prompts for the agent
- Draft a Mermaid sequence diagram for our checkout flow and save it to the workspace.
- List all project folders in our organization using Stable Baseline.
- Create a task breakdown document for the upcoming authentication migration.
How to install Stable Baseline
Platform CLI: remote server
claude mcp add --transport http stable-baseline https://api.stablebaseline.io/functions/v1/cloud-serve/mcpPlatform CLI: remote server
codex mcp add stable-baseline --url https://api.stablebaseline.io/functions/v1/cloud-serve/mcpConfig file
{
"mcpServers": {
"stable-baseline": {
"url": "https://api.stablebaseline.io/functions/v1/cloud-serve/mcp"
}
}
}Config file
{
"servers": {
"stable-baseline": {
"type": "http",
"url": "https://api.stablebaseline.io/functions/v1/cloud-serve/mcp"
}
}
}Platform CLI: remote server
gemini mcp add -t http stable-baseline https://api.stablebaseline.io/functions/v1/cloud-serve/mcpStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about Stable Baseline
How to install Stable Baseline in Claude Code?
Run claude mcp add --transport http stable-baseline https://api.stablebaseline.io/functions/v1/cloud-serve/mcp. You can authenticate interactively via OAuth on the first request or provide an API token via header.
What does Stable Baseline do?
It exposes 222 tools for managing workspace documents, project hierarchies, databases, and visual diagrams directly within your coding agent.
How is database access enabled for API keys?
Go to organization developer settings, generate a key starting with sta_, and manually enable the database permission box, which is unticked initially.
