Scherlok vs Capsulemcp

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

Scherlok logoScherlokData Platforms · Local subprocess (stdio)Zero-config data quality monitoring across Postgres, BigQuery, Snowflake, MySQL, and DuckDB. Profile a warehouse, detect anomalies (volume, schema drift, freshness, NULLs, distribution, cardinality), with optional dbt manifest lineage. Read-only — connection resolved server-side, never passed via the model.55GoodAuth: api key requiredCapsulemcp logoCapsulemcpData Platforms · Local subprocess (stdio)MCP server for Capsule CRM. 81 tools (49 in read-only mode) covering contacts, opportunities, projects, tasks, timeline activity, structured + saved filters, workflow tracks, and file attachments. Two transports — stdio (npx capsulemcp) and HTTP+OAuth for hosted Custom Connectors. Read-only-mode env flag for safer defaults. Apache 2.0.60GoodAuth: api key required

Verdict: choose Scherlok for data platforms work as a local process; choose Capsulemcp for data platforms as a local process. You can also run both side by side in one mcpServers block.

Which MCP server should you choose?

Scherlok logoChoose Scherlok when

  • You need dedicated capabilities in the Data Platforms domain.
  • You prefer a local stdio subprocess transport.
  • Its auth model fits you: API key required.
Explore Scherlok

Capsulemcp logoChoose Capsulemcp when

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

Feature & specification comparison

Rows where the two servers differ are marked.

SpecScherlok logoScherlokCapsulemcp logoCapsulemcp
CategoryData PlatformsData Platforms
Quality signal55/100 · Good60/100 · Good
Install commandConfirmedConfirmed
TransportLocal subprocess (stdio)Local subprocess (stdio)
AuthAPI key requiredAPI key required
PricingFreeFree
Required env varsNone listedCAPSULE_API_TOKEN
Verified ownerCommunity listingCommunity listing
GitHub stars115
Directory activity 3 views 0 installs 0 upvotes 5 views 0 installs 0 upvotes
ToolsNot listedNot listed

Tools & capabilities

Scherlok tools

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

Capsulemcp 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.

Scherlok

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "rbmuller-scherlok": {
      "command": "uvx",
      "args": [
        "--from",
        "scherlok[duckdb]",
        "scherlok"
      ]
    }
  }
}

Capsulemcp

mcpServers (Claude Desktop / Cursor)
{
  "mcpServers": {
    "soil-dev-capsulemcp": {
      "command": "npx",
      "args": [
        "-y",
        "cache"
      ],
      "env": {
        "CAPSULE_API_TOKEN": "YOUR_CAPSULE_API_TOKEN_HERE"
      }
    }
  }
}

Frequently asked questions

Scherlok is categorized under Data Platforms and uses a local stdio subprocess. Capsulemcp belongs to Data Platforms and uses a local stdio subprocess. Pick Scherlok for data platforms work and Capsulemcp for data platforms.

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.

Scherlok is listed as free. Auth: api key required. Capsulemcp 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 rbmuller-scherlok and soil-dev-capsulemcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.

On AllMCPs, Scherlok has a quality signal of 55/100 (Good) with 3 views, 0 installs and 11 GitHub stars. Capsulemcp has 60/100 (Good) with 5 views, 0 installs and 5 GitHub stars.