MCP server · Lemma

lemma

Lemma operates an official remote MCP server at https://api.uselemma.ai/mcp (Streamable HTTP transport), authenticated with a project API key sent as an Authorization Bearer header. It gives coding agents (Cursor, Claude Desktop, Claude Code, any MCP client) direct access to the project's traces, metrics, and monitors so the agent can pull the exact runs and errors it needs and fix issues in place. The docs point to the Platform API reference for the full tool surface; Lemma does not publish a standalone named tool list, so no tools are fabricated here.

Open endpoint → Lemma provider profile

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Provider: Lemma Type: Hosted endpoint Transport: http Host: api.uselemma.ai

Endpoint

https://api.uselemma.ai/mcp

Hosted endpoint · transport http

Connect

This is a remote MCP server — point an MCP client at the endpoint URL. Clients with native remote support (Claude, Cursor, VS Code, …):

# mcp client config (e.g. .mcp.json / mcp settings) { "mcpServers": { "uselemma": { "url": "https://api.uselemma.ai/mcp" } } }

For stdio-only clients (older Claude Desktop, etc.), bridge with mcp-remote:

# Add to claude_desktop_config.json { "mcpServers": { "uselemma": { "command": "npx", "args": ["-y", "mcp-remote", "https://api.uselemma.ai/mcp"] } } }

If the server requires authentication, add the provider's token/header (e.g. an X-API-Key) per its docs. A quick reachability check:

curl -i -X POST https://api.uselemma.ai/mcp \ -H "Content-Type: application/json" -H "Accept: application/json, text/event-stream" \ -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

About MCP

The Model Context Protocol (MCP) is an open protocol Anthropic introduced for connecting LLM-based agents to external tools and data sources. Providers publish MCP servers that expose their API surface as structured, discoverable tools — an MCP-compatible client (Claude Desktop, Cursor, Cline, Continue, etc.) can connect to the server and call its tools without any per-provider integration code.

Browse every MCP server on the APIs.io network or compare with the broader Agent Skill surfaces of the same providers.