io.github.blackwell-systems/gcf-proxy vs io.github.lennney/mcp-slim-guard
io.github.blackwell-systems/gcf-proxy is an MCP server published by blackwell-systems. Marketplaces we read that list it: 1 (Official MCP Registry). io.github.lennney/mcp-slim-guard is an MCP server published by lennney. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-11-05. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  io.github.blackwell-systems/gcf-proxy |  io.github.lennney/mcp-slim-guard |
|---|---|---|
| Official MCP Registry | Listed Version: 0.10.2 Downloads/month (npm): 349 Downloads/week (npm): 61 Forks (GitHub): 1 Stars (GitHub): 11 Not marked · First seen |
Listed Version: 0.1.1-alpha.1 Downloads/month (npm): 182 Downloads/week (npm): 58 Forks (GitHub): 1 Stars (GitHub): 180 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | io.github.blackwell-systems/gcf-proxy | io.github.lennney/mcp-slim-guard |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 11 (worse) | 180 (better) |
| Forks (GitHub) | 1 | 1 |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (@blackwell-systems/gcf-proxy) | On your machine (mcp-slim-guard) |
| Transport | stdio | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/blackwell-systems/gcf-proxy | github.com/lennney/mcp-slim-guard |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
io.github.blackwell-systems/gcf-proxy
Drop-in MCP proxy. 71% fewer tokens. Session dedup compounds to 92%. Zero code changes.
io.github.lennney/mcp-slim-guard
76% fewer MCP tokens in our standard benchmark. Same upstream call. Exact recovery.
How to run each
io.github.blackwell-systems/gcf-proxy As a local MCP server: npm package
claude mcp add --transport stdio gcf-proxy -- npx -y @blackwell-systems/gcf-proxyio.github.lennney/mcp-slim-guard As a local MCP server: npm package
claude mcp add --transport stdio mcp-slim-guard -- npx -y mcp-slim-guardCommands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: io.github.blackwell-systems/gcf-proxy · What it can do: io.github.lennney/mcp-slim-guard · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.