spanlens-mcp
Rank #41,020io.github.spanlens/mcp-server
Query Spanlens LLM observability from Cursor, Claude Desktop, or Continue via MCP.
What you can do with spanlens-mcp
spanlens-mcp is a Model Context Protocol (MCP) server published by spanlens. It ranks #41,020 of 150,963 active servers on MCP Toplist, and its repository has 13 GitHub stars. spanlens-mcp is listed across 4 registries — Official MCP, PulseMCP, Glama and mcp.so, with 7 tracked versions. It was first listed on Jun 4, 2026 and most recently updated on Sep 28, 2026.
Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.
What spanlens-mcp can and cannot do
Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.
What you need before using spanlens-mcp
The registry listing declares required configuration before first use — typically an API key, token or connection string set via environment variables.
Declared by Glama, last synced Oct 22, 2026. Not independently verified by MCP Toplist.
- SPANLENS_API_KEY · required
- SPANLENS_BASE_URL · optional
Connect spanlens-mcp and confirm it works
claude mcp add spanlens -e "SPANLENS_API_KEY=<your SPANLENS_API_KEY>" -e "SPANLENS_BASE_URL=<your SPANLENS_BASE_URL>" -- npx -y @spanlens/mcp-serverReplace each placeholder with your own value before saving.
[mcp_servers.spanlens]
command = "npx"
args = ["-y", "@spanlens/mcp-server"]
[mcp_servers.spanlens.env]
SPANLENS_API_KEY = "<your SPANLENS_API_KEY>"
SPANLENS_BASE_URL = "<your SPANLENS_BASE_URL>"Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.
{
"mcpServers": {
"spanlens": {
"command": "npx",
"args": [
"-y",
"@spanlens/mcp-server"
],
"env": {
"SPANLENS_API_KEY": "<your SPANLENS_API_KEY>",
"SPANLENS_BASE_URL": "<your SPANLENS_BASE_URL>"
}
}
}
}Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.
{
"mcpServers": {
"spanlens": {
"command": "npx",
"args": [
"-y",
"@spanlens/mcp-server"
],
"env": {
"SPANLENS_API_KEY": "<your SPANLENS_API_KEY>",
"SPANLENS_BASE_URL": "<your SPANLENS_BASE_URL>"
}
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.
{
"servers": {
"spanlens": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@spanlens/mcp-server"
],
"env": {
"SPANLENS_API_KEY": "<your SPANLENS_API_KEY>",
"SPANLENS_BASE_URL": "<your SPANLENS_BASE_URL>"
}
}
}
}Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.
{
"mcpServers": {
"spanlens": {
"command": "npx",
"args": [
"-y",
"@spanlens/mcp-server"
],
"env": {
"SPANLENS_API_KEY": "<your SPANLENS_API_KEY>",
"SPANLENS_BASE_URL": "<your SPANLENS_BASE_URL>"
}
}
}
}Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.
{
"mcpServers": {
"spanlens": {
"command": "npx",
"args": [
"-y",
"@spanlens/mcp-server"
],
"env": {
"SPANLENS_API_KEY": "<your SPANLENS_API_KEY>",
"SPANLENS_BASE_URL": "<your SPANLENS_BASE_URL>"
}
}
}
}Replace each placeholder with your own value before saving.
After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.
What changed, and when this was checked
- First listed
- Jun 4, 2026
- Latest version published
- Sep 28, 2026
- Version history
- 7 versions tracked (below)
- Requirements evidence
- Declared by Glama, last synced Oct 22, 2026. Not independently verified by MCP Toplist.
- Profile checked
- Not yet — purpose, capabilities and requirements above come from registry data only
- Ranking data as of
- Oct 22, 2026
- PulseMCP ↗listed since Jun 10, 2026 · still listed
- Official MCP ↗listed since Jul 24, 2026 · still listed
- Glama ↗listed since Jul 29, 2026 · still listed
- mcp.so ↗listed since Aug 26, 2026 · still listed
Do you maintain spanlens-mcp? to correct or enrich this profile.
Available versions (7)
| Version | Published |
|---|---|
| 0.3.0 | Sep 28, 2026 |
| 0.2.1 | Jul 13, 2026 |
| 0.2.0 | Jul 13, 2026 |
| 0.1.4 | Jun 22, 2026 |
| 0.1.3 | Jun 13, 2026 |
| 0.1.2 | Jun 5, 2026 |
| 0.1.1 | Jun 4, 2026 |
Ranks ahead of 109,943 of 150,963 servers on MCP Toplist.
Show your rank
Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.
[](https://mcptoplist.com/server/io.github.spanlens%2Fmcp-server)<a href="https://mcptoplist.com/server/io.github.spanlens%2Fmcp-server"><img src="https://mcptoplist.com/badge/io.github.spanlens%2Fmcp-server.svg" alt="MCP Toplist: Top 50% of 150,963" /></a>Variants: append ?metric=score or ?metric=stars to the image URL.
Frequently asked questions
- Who maintains spanlens-mcp?
- spanlens-mcp is maintained by spanlens, which publishes 1 MCP server (7 total versions) tracked on MCP Toplist.
- Is spanlens-mcp listed on the Official MCP Registry?
- Yes — spanlens-mcp is listed on the Official MCP Registry, alongside PulseMCP, Glama and mcp.so.
- How many versions does spanlens-mcp have?
- MCP Toplist tracks 7 versions of spanlens-mcp, most recently published on Sep 28, 2026.
- Where can I find the source code for spanlens-mcp?
- The source code for spanlens-mcp is hosted at github.com/spanlens/spanlens/tree/HEAD/mcp.
Do you run this server?
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