Stack Gems

com.stackgems/catalogVersion 1.0.0

Read-only search of 900+ reviewed developer tools, each with a verdict and caveats. Free/OSS first.

Status

Responds211 msNov 14, 2026, 14:17 UTCAnswered our handshake without sign-in.

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We could not refresh it, so this page shows the last copy.

Last checked: Nov 14, 2026, 14:17 UTC
Latency: 211 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 21:12 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://stackgems.com/api/mcpResponds211 msNov 14, 2026, 14:17 UTC

No sign-in

Claude Code

claude mcp add --transport http catalog https://stackgems.com/api/mcp

Claude Desktop and claude.ai

1
2
3

Settings > Connectors > Add custom connector
Name: catalog
Remote MCP server URL: https://stackgems.com/api/mcp

Cursor

{
  "mcpServers": {
    "catalog": {
      "url": "https://stackgems.com/api/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"catalog","type":"http","url":"https://stackgems.com/api/mcp"}'

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Tools

5 tools

Tools of Stack Gems
	Description		Read-only	Idempotent	Open world
`best_for`Ranked shortlist for a use case or category (e.g. "vector database", "coding agents", "auth", "mcp"), free and open source first, each with verdict and Catch. Falls back to search when no list matches.	Ranked shortlist for a use case or category (e.g. "vector database", "coding agents", "auth", "mcp"), free and open source first, each with verdict and Catch. Falls back to search when no list matches.	Not declared	Yes	Yes	No
`get_alternatives`Free and open-source alternatives to a tool from the same category, with verdict and Catch. Works for any slug in the catalog.	Free and open-source alternatives to a tool from the same category, with verdict and Catch. Works for any slug in the catalog.	Not declared	Yes	Yes	No
`get_gem`Full Stack Gems review of one tool by slug: what is good, the Catch, verdict, license, repo health, plus links to its best-of list and alternatives.	Full Stack Gems review of one tool by slug: what is good, the Catch, verdict, license, repo health, plus links to its best-of list and alternatives.	Not declared	Yes	Yes	No
`list_categories`The catalog vocabulary: stacks (categories), best-of lists with counts, and the tag vocabulary with counts. Use the slugs as filters in search_gems.	The catalog vocabulary: stacks (categories), best-of lists with counts, and the tag vocabulary with counts. Use the slugs as filters in search_gems.	Not declared	Yes	Yes	No
`search_gems`Search the Stack Gems catalog of reviewed developer tools. Matches name, tagline, verdict, Catch, subcategory and tags. Filters combine with AND. Returns verdict and the first sentence of the Catch for each hit.	Search the Stack Gems catalog of reviewed developer tools. Matches name, tagline, verdict, Catch, subcategory and tags. Filters combine with AND. Returns verdict and the first sentence of the Catch for each hit.	Not declared	Yes	Yes	No

Details

Registry status: Active
Published: Oct 19, 2026
Updated: Oct 19, 2026
Website: https://stackgems.com/for-agents⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): Developer toolsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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