Winnr MCP Server
winnr-mcp
PyPI
v0.2.0
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.
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 − 2.1 = 98. What the published surface and source actually contain:
| Points | What was found | Category |
|---|---|---|
| −2.1 | Package has no source repository MTC-SUP-011 | supply-chain |
2. Client adoption risk — 98 − 8 = 90. 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 |
|---|---|
| −3 | capability blast radius (moderate) — client exposure if the model is manipulated |
| −5 | publisher verification (unlocatable) — no provenance and no public repository to inspect |
| ✓ | inspection depth (source) — how much of the target the scan could see |
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 2
medium Untrusted input can drive an external actionMTC-FLOW-005
Untrusted-input tools ([winnr_refresh_inbox]) co-exist with external-action tools ([winnr_send_email]). A prompt injection could cause unwanted external actions, though no direct sensitive-data leak path was found.
Evidence: untrusted [winnr_refresh_inbox] → sinks [winnr_send_email]
Fix: Require confirmation for state-changing/egress actions triggered after processing untrusted content.
Location: flow winnr_refresh_inbox → winnr_send_email
low Package has no source repositoryMTC-SUP-011
"winnr-mcp" declares no repository URL, so its published artifact cannot be compared against reviewable source.
Fix: Prefer packages that link to public, reviewable source.
Location: package winnr-mcp
Tools 38
Each tool and what it can reach — statically extracted from the published source.
winnr_refresh_inboxingests untrusted inputwinnr_send_emailnetwork egresswinnr_bulk_create_email_usersno sensitive capabilitywinnr_check_nameserversno sensitive capabilitywinnr_connect_domainsno sensitive capabilitywinnr_create_email_userno sensitive capabilitywinnr_delete_domainno sensitive capabilitywinnr_delete_email_userno sensitive capabilitywinnr_delete_messageno sensitive capabilitywinnr_disable_warmingno sensitive capabilitywinnr_enable_warmingno sensitive capabilitywinnr_export_email_usersno sensitive capabilitywinnr_get_accountno sensitive capabilitywinnr_get_dns_recordsno sensitive capabilitywinnr_get_dns_statusno sensitive capabilitywinnr_get_domainno sensitive capabilitywinnr_get_email_userno sensitive capabilitywinnr_get_jobno sensitive capabilitywinnr_get_message_bodyno sensitive capabilitywinnr_get_usageno sensitive capabilitywinnr_get_warming_metricsno sensitive capabilitywinnr_get_warming_overviewno sensitive capabilitywinnr_list_domainsno sensitive capabilitywinnr_list_email_usersno sensitive capabilitywinnr_list_inboxno sensitive capabilitywinnr_list_jobsno sensitive capabilitywinnr_list_warmingno sensitive capabilitywinnr_pause_warmingno sensitive capabilitywinnr_purchase_domainsno sensitive capabilitywinnr_resume_warmingno sensitive capabilitywinnr_search_domainsno sensitive capabilitywinnr_search_domains_bulkno sensitive capabilitywinnr_setup_domainno sensitive capabilitywinnr_suggest_domainsno sensitive capabilitywinnr_tag_domainsno sensitive capabilitywinnr_update_email_userno sensitive capabilitywinnr_update_warming_settingsno sensitive capabilitywinnr_verify_dnsno sensitive capability
Toxic flows 1
Cross-tool combinations that form a data-exfiltration primitive (untrusted input → sensitive source → external sink).
What this scan could not see
- Tools were statically extracted from the published source (38 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
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 |
|---|---|---|---|---|
v0.2.0 latest |
A 90/100 | 2 | 1.8.0 | 2026-07-23 |
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 winnr-mcp --online --registry pypiMore in Developer Tools
Security scan results for the 1stay MCP server.
Security scan results for the Adguard Home MCP server.
Security scan results for the Ado Browser MCP server.
Security scan results for the Adobe Experience Dev MCP server.
Security scan results for the Aemet MCP server.
Security scan results for the Agent MCP server.