Repocrunch vs Spanlens

A side-by-side look at the Repocrunch and Spanlens MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.

Repocrunch logoRepocrunchMonitoring · Local subprocess (stdio)MCP server that gives AI agents structured, ground-truth GitHub repository intelligence. Analyze tech stack, dependencies, architecture, health metrics, and security indicators with deterministic JSON output.47FairAuth: not declaredSpanlens logoSpanlensMonitoring · Local subprocess (stdio)Query your Spanlens LLM observability from any MCP client. 7 read tools for request logs, agent traces, cost stats, anomalies, model-savings, and per-user analytics across OpenAI, Anthropic, and Gemini. Open source, self-hostable. npx -y @spanlens/mcp-server57GoodAuth: api key required

Verdict: choose Repocrunch for monitoring work as a local process; choose Spanlens for monitoring as a local process. You can also run both side by side in one mcpServers block.

Which MCP server should you choose?

Repocrunch logoChoose Repocrunch when

  • You need dedicated capabilities in the Monitoring domain.
  • You prefer a local stdio subprocess transport.
Explore Repocrunch

Spanlens logoChoose Spanlens when

  • You need dedicated capabilities in the Monitoring domain.
  • You prefer a local stdio subprocess transport.
  • Its auth model fits you: API key required.
  • You have the keys it needs: SPANLENS_API_KEY.
Explore Spanlens

Feature & specification comparison

Rows where the two servers differ are marked.

SpecRepocrunch logoRepocrunchSpanlens logoSpanlens
CategoryMonitoringMonitoring
Quality signal47/100 · Fair57/100 · Good
Install commandConfirmedConfirmed
TransportLocal subprocess (stdio)Local subprocess (stdio)
AuthNot declaredAPI key required
PricingNot declaredFree
Required env varsNone listedSPANLENS_API_KEY
Verified ownerCommunity listingCommunity listing
GitHub stars913
Directory activity 2 views 0 installs 0 upvotes 5 views 0 installs 0 upvotes
ToolsNot listedNot listed

Tools & capabilities

Repocrunch tools

No tool names declared yet. Check the project README from the listing page.

Spanlens tools

No tool names declared yet. Check the project README from the listing page.

Ready-to-paste client configs

Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.

Repocrunch

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "kimwwk-repocrunch": {
      "command": "uvx",
      "args": [
        "repocrunch"
      ]
    }
  }
}

Spanlens

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "spanlens-spanlens-2": {
      "command": "npx",
      "args": [
        "-y",
        "@spanlens/cli"
      ],
      "env": {
        "SPANLENS_API_KEY": "YOUR_SPANLENS_API_KEY_HERE"
      }
    }
  }
}

Frequently asked questions

Repocrunch is categorized under Monitoring and uses a local stdio subprocess. Spanlens belongs to Monitoring and uses a local stdio subprocess. Pick Repocrunch for monitoring work and Spanlens for monitoring.

Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.

Repocrunch has no declared pricing — check the project's own site. Spanlens is listed as free. Auth: api key required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.

Yes. MCP clients support multiple servers: add kimwwk-repocrunch and spanlens-spanlens-2 as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, Repocrunch has a quality signal of 47/100 (Fair) with 2 views, 0 installs and 9 GitHub stars. Spanlens has 57/100 (Good) with 5 views, 0 installs and 13 GitHub stars.