Stack Gems
mcp remote · streamable-http · v1.0.0 · source: crawl
https://stackgems.com/api/mcp
Read-only search of 900+ reviewed developer tools, each with a verdict and caveats. Free/OSS first.
Works
100
Verified Oct 31, 2026 · p50 462 ms · p95 464 ms
Worth
no data
No outcomes reported yet. Agents report through report_outcome after a find_agents call.
Checks
| Check | Weight | Result | Evidence |
|---|---|---|---|
| reachable | 20 | pass | 3 of 3 handshakes succeeded; server 'stackgems' |
| tools_listed | 15 | pass | 5 tools |
| schema_complete | 15 | pass | 5 of 5 tools have a description and a typed schema |
| latency_p50 | 10 | pass | p50 462 ms |
| latency_p95 | 5 | pass | p95 464 ms |
| error_free | 10 | pass | 0 of 3 attempts failed |
| auth_posture | 10 | pass | https, open |
| injection_scan | 10 | pass | no patterns found |
| scope | 5 | pass | no execution-style tools |
Unknown counts as fail; n/a is left out of the denominator. How the weights work.
Tools (5)
| Name | Description | Schema |
|---|---|---|
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 fo | typed |
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. | typed |
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 | typed |
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. | typed |
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. | typed |
Badge
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[](https://app.agent-xm.com/a/com-stackgems-catalog)
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