Proving Lab

dev.provinglab/browser-citation-capture

by dev.provinglab· v1.24.2Official MCP Registry

Findings

Detected by Squatch rules from the server's metadata and protocol behavior. Latest completed scan: Nov 5, 2026, 10:32 UTC.

HighOpenSQ-TOOL-CONCEALMENT

Model-facing text instructs the AI model to hide actions or information from the user.

First seen Oct 16, 2026 · Last seen Nov 5, 2026

Suggested fix: Remove any wording that asks the model to act silently or withhold information from the user.

MediumOpenSQ-SERVER-AUTH-NONE-WRITE

The remote server lists state-changing tools without requiring authentication.

First seen Oct 16, 2026 · Last seen Nov 5, 2026

Suggested fix: Require MCP authorization for servers that expose state-changing tools.

LowOpenSQ-TOOL-DESTRUCTIVE-NO-ANNOTATION

A tool that appears to delete data, change permissions or run code declares no tool annotations.

First seen Oct 16, 2026 · Last seen Nov 5, 2026

Suggested fix: Declare readOnlyHint, destructiveHint, idempotentHint and openWorldHint so clients can request confirmation.

LowOpenSQ-REPO-MISSING

No source repository is linked in the registry entry.

First seen Oct 16, 2026 · Last seen Nov 5, 2026

Suggested fix: Add a repository to server.json.

Squatch never calls a server's tools, so it cannot see what they actually do at run time.
It scans without credentials: tools behind authentication may not be visible.
It does not review source code, dependencies or the publisher's infrastructure.
A server can change behavior between scans; monitoring compares each scan with the last.
Classifications come from tool names, descriptions and schemas, which the publisher controls.

High-severity findings detected

1 open finding at HIGH or above (0 critical).

1 piece of evidence

Source: Squatch observedscan
Metadata and configuration analysis; tools are not executed.
Observed Nov 5, 2026, 10:32 UTC

Last checked Nov 5, 2026, 10:32 UTC

Squatch observed

Summary: { "type": "none", "challengeStatus": null, "scopesSupported": [], "resourceMetadataUrl": null, "authorizationServers": [] }

Checks: { "checks": [ { "check": "tools_list_deterministic", "passed": true }, { "check": "list_methods_succeed", "passed": true }, { "check": "list_results_schema_valid", "passed": true }, { "check": "pagination_terminates", "passed": true }, { "check": "tool_names_valid", "passed": true }, { "check": "tool_names_unique", "passed": true }, { "check": "no_network_schema_refs", "passed": true }, { "check": "x_mcp_header_valid", "passed": true }, { "check": "icon_urls_https_or_data", "detail": "no icons declared", "passed": true }, { "check": "initialize_version_echo", "detail": "requested 2025-11-25, received \"2025-06-18\"", "passed": true }, { "check": "notification_202", "passed": true }, { "check": "get_stream_or_405", "passed": true } ], "toolsListNondeterministic": false }