sevalla-hosting/mcp

**Give AI agents full access to the Sevalla PaaS API. Just 2 tools.**
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A remote Model Context Protocol server that exposes the entire Sevalla PaaS API through just 2 tools instead of ~200. AI agents write JavaScript that runs in sandboxed V8 isolates to discover and call any API endpoint on demand.
- **search** - query the OpenAPI spec to discover endpoints, parameters, and schemas
- **execute** - run JavaScript in a sandboxed V8 isolate that calls the API via sevalla.request()
This reduces context window usage by ~99% compared to traditional one-tool-per-endpoint approaches.
Background
Cloudflare came up with the Code Mode MCP pattern: instead of registering one tool per API endpoint, you give the agent two tools. One to search the API spec, one to execute code against it. Simple idea, massive difference in practice.
As a Cloudflare partner, we took this pattern and built it for the Sevalla PaaS API. The sandbox architecture and tool design are inspired by codemode, an open-source implementation of the same pattern.
Any MCP client can now manage Sevalla infrastructure through conversation. The AI writes and runs API calls in a secure V8 sandbox. No SDK needed, no boilerplate, no 200-tool context window.
Quick Start
Connect your MCP client to the hosted server at https://mcp.sevalla.com/mcp. Authentication is handled via OAuth — your client will open a browser to log in with your Sevalla account. No API keys needed in the config.
Claude Code
Then type /mcp inside Claude Code and select **Authenticate** to complete the OAuth flow.
Claude Code MCP docs
Claude Desktop
Add via **Settings → Connectors → Add Connector** and enter https://mcp.sevalla.com/mcp as the URL. Claude Desktop handles OAuth automatically.
Claude Desktop MCP docs
Cursor
Add to .cursor/mcp.json in your project root:
Cursor MCP docs
Windsurf
Add to ~/.codeium/windsurf/mcp_config.json:
Windsurf MCP docs
OpenCode
Add to opencode.json in your project root:
Then run opencode mcp auth sevalla to complete the OAuth flow.
OpenCode MCP docs
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Sevalla API keys support granular permissions — you can create a read-only key if you want your agent to query infrastructure without modifying it. Full API reference at api-docs.sevalla.com (base URL: api.sevalla.com/v3).
Uninstall
To fully remove the Sevalla MCP server, delete the server configuration **and** clear stored OAuth credentials.
Removing the MCP server does **not** delete your API key on Sevalla. To revoke it, go to app.sevalla.com/api-keys.
Claude Code
Then clear the stored OAuth token: run /mcp inside Claude Code, select **sevalla**, and choose **Clear authentication**.
If the server was added at a non-default scope, specify it explicitly:
Claude Code MCP reference
Claude Desktop
Open **Settings → Connectors**, find the Sevalla connector, and remove it. Then fully quit and restart Claude Desktop.