Mcp Rss (npm) MCP Server
mcp_rss
npm
v1.0.6
Published by an unidentified publisher — no publish provenance and no public repository, so the publisher could not be verified and the source cannot be independently located.
MCP server for interacting with RSS
The grade answers one question — how safe is this server for you to adopt — so it is computed in two auditable stages. Nothing below is an opinion or an LLM's guess; every line is a real term the deterministic engine applied, and the same input always yields the same number.
1. Threat score — 100 − 3.6 = 96. What the published surface and source actually contain:
| Points | What was found | Category |
|---|---|---|
| −3.6 | Hidden zero-width / joiner character in description MTC-UNI-005 | injection |
2. Client adoption risk — 96 − 2 = 94. Three small, subtract-only factors that reflect your risk in adopting it — a clean scan proves less on a powerful, unverified or barely-inspectable package, so the grade says so plainly:
| Points | Adoption-risk factor |
|---|---|
| −2 | publisher verification (unlinked) — no provenance/repo link, but the shipped source was fully read |
Capability observations and info notes are shown under Findings but never scored.
Open any row's finding below for the file, line and evidence behind a deduction.
Findings 1
medium Hidden zero-width / joiner character in descriptionMTC-UNI-005
Found 2 zero-width / joiner character character(s) in the description of tool "get_sources". These are invisible to a human reviewer but are read verbatim by the model.
Evidence: 2× zero-width
Fix: Reject or normalize server metadata containing invisible/smuggling characters. Legitimate tool descriptions do not need them.
Location: tool get_sources · description
Tools 3
Each tool and what it can reach — statically extracted from the published source.
get_contentno sensitive capabilityget_sourcesno sensitive capabilityset_tagno sensitive capability
What this scan could not see
- Tools were statically extracted from the published source (3 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, scan the running server: --command "npx -y <package>".
Versions 1
Scan history per published version. The engine is deterministic — the same version always yields the same score, so a changed score means the package itself changed.
| Version | Score | Findings | Engine | Scanned |
|---|---|---|---|---|
v1.0.6 latest |
A 94/100 | 1 | 1.13.0 | 2026-09-07 |
Embed this score
Show this server's live Trust Score in your README, docs or website. The badge is served straight from the registry and updates automatically after every rescan — no API key needed. It links back to this page, so anyone who sees the grade can also read the findings behind it instead of taking a number on faith.
Verify this score yourself
The score above is reproducible: the same package version always yields the same result. Run it locally or over the free API — no account, no LLM, fully deterministic.
npx mcptrustchecker scan mcp_rss --onlineOther implementations of Mcp Rss 2
Independent packages implementing the same tool, scanned with the same engine. Compare all 3 side by side →
MCP server for fetching, parsing, and managing RSS feeds
[](https://www.npmjs.com/package/rss-mcp)
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