MCP Inspector (modelcontextprotocol/inspector) is an MCP server listed on the M8ven Trust Index. It scores 75 out of 100, grade B. It declares 34 tools. No publisher has claimed this listing.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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modelcontextprotocol
Source: mcp.so
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
hono: CORS Middleware reflects any Origin with credentials when `origin` defaults to the wildcard
undici vulnerable to cross-user information disclosure and parse-time crash via degenerate private cache directives
ajv has ReDoS when using `$data` option
Hono: app.mount() strips mount prefix using undecoded path, causing incorrect routing for percent-encoded paths
Hono: Cookie helper does not sanitize sameSite and priority, allowing Set-Cookie injection
ALLOWED_ORIGINSCLIENT_PORTDANGEROUSLY_OMIT_AUTHMCP_AUTO_OPEN_ENABLEDMCP_DEBUGMCP_LOG_FILEMCP_STORAGE_DIRVITESTTool annotations
18/34 tools have annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
34/34 tools missing one or more hints — list_files (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); query_database (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); git_status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +31 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
License file
No license file
Add a LICENSE file (MIT, Apache-2.0, etc.).
Tool test coverage
Only 0/34 tools referenced in tests (0%)
Write tests that reference each tool by name so every tool has at least one test.
No arbitrary install scripts
Has postinstall/preinstall script — runs arbitrary code on npm install
Remove postinstall/preinstall hooks unless they’re essential.
Production dependencies are patched
0 critical, 2 high severity in production deps — hono@4.12.18 (high), undici@8.5.0 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dependency freshness
1/23 production deps stale: ink-form@2024-05-18 (2.2y)
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