What is Spanlens?
Spanlens is a MCP server by spanlens that read-only access to Spanlens LLM observability: request logs, costs, agent traces, anomalies, model savings and per-user analytics. It is listed under Cloud & infra and has 13 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | spanlens |
| Repository | spanlens/Spanlens |
| Popularity | 13 GitHub stars |
| Category | Cloud & infra |
| Security | Low risk (88/100) |
| Rank | #1,569 of 4,418 MCP servers; #86 in Cloud & infra |
| License | MIT |
| Last commit | 2026-10-12 |
| Runs | Cloud service |
| Language | TypeScript |
Is Spanlens safe to install?
Spanlens scores 88/100 on the MCPMods security check: Low risk. Things to review: sends your data to a cloud service. It passed 5 of 6 checks.
MCP server results come from listing signals: who publishes it, where your data goes and what it can do. The code itself is not scanned yet.
| Check | Result |
|---|---|
| Published by the service itself | Pass |
| Sends your data to a cloud service | Review |
| No credentials mentioned | Pass |
| Read-only by description | Pass |
| No code execution | Pass |
| Source on GitHub | Pass |
How do I install Spanlens?
- Find the launch command. The README says how the server starts (npx, uvx, docker or a remote URL) and which API keys it needs.
https://github.com/spanlens/Spanlens/tree/main/packages/mcp-server
- Add it to Claude Code. Replace the part after -- with the command from the README. Remote servers use --transport http with a URL.
claude mcp add spanlens -- <command from README> claude mcp add --transport http spanlens <server-url>
- Check it connected. This lists your MCP servers and their status.
claude mcp list
Or ask Claude to set it up
Paste this into Claude Code and it installs Spanlens for you:
Add the "Spanlens" MCP server from https://github.com/spanlens/Spanlens/tree/main/packages/mcp-server to Claude Code. Read its README for the launch command and any API keys I need, run claude mcp add, then check that it connects.