sniffmcp-cli vs ActionGuard Protocol Inspector Agent
sniffmcp-cli is an MCP server published by SomehowLiving. Marketplaces we read that list it: 1 (PyPI (MCP servers)). ActionGuard Protocol Inspector Agent is an MCP server published by lsendel. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-11-11. 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 |  sniffmcp-cli |  ActionGuard Protocol Inspector Agent |
|---|---|---|
| PyPI (MCP servers) | Listed Version: 0.5.1 Downloads/month (PyPI): 0 Downloads/week (PyPI): 406 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.0.0 Forks (GitHub): 1 Stars (GitHub): 0 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 | sniffmcp-cli | ActionGuard Protocol Inspector Agent |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) | 0 | 0 |
| Forks (GitHub) (differs) | 0 (worse) | 1 (better) |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (sniffmcp-cli) | Remote server (actionguard.ai/mcp) |
| Transport (differs) | Not stated | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Licence (differs) | Apache-2.0 | Not stated |
| Repository (differs) | github.com/somehowliving/sniffmcp | github.com/lsendel/actionguard |
| Changes in the last 7 days | 0 | 0 |
| First seen (differs) | 2026-10-13 | 2026-10-21 |
| Endpoint at the last check (differs) | no remote endpoint we check | Status out of date: last check 40 h ago returned HTTP 200 |
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
sniffmcp-cli
Sniff out what your AI tools are hiding: local security checks for MCP servers (hidden instructions, known malware, leaked secrets, rug pulls).
ActionGuard Protocol Inspector Agent
Diff and poisoning detection for MCP servers: catch schema drift and prompt poisoning.
How to run each
sniffmcp-cli
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
ActionGuard Protocol Inspector Agent As a remote MCP server
claude mcp add --transport http actionguard https://actionguard.ai/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only ActionGuard Protocol Inspector Agent has a remote endpoint we check. How we check endpoints
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: sniffmcp-cli · What it can do: ActionGuard Protocol Inspector Agent · Compare two other plugins
Package data comes from the Python Package Index (pypi.org). 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.