io.github.cyanheads/gbif-biodiversity-mcp-server

by io.github.cyanheads· v0.8.1Official MCP Registry

Findings

Detected by Squatch rules from the server's metadata and protocol behavior. Latest completed scan: Nov 12, 2026, 15:15 UTC.

HighOpenSQ-SERVER-INSTRUCTIONS-INJECTION

The server's instructions field contains directives addressed to the AI model beyond describing how to use the server.

First seen Oct 18, 2026 · Last seen Nov 12, 2026

Suggested fix: Limit server instructions to usage guidance for this server's own tools.

MediumOpenSQ-TOOL-CROSS-TOOL-REFERENCE

Model-facing text gives the AI model instructions about tools that this server does not provide (tool shadowing).

First seen Nov 12, 2026 · Last seen Nov 12, 2026

Suggested fix: Describe only this server's own tools.

LowOpenSQ-TOOL-LENGTH-ANOMALY

Model-facing text is unusually long, which consumes context and leaves room to hide content.

First seen Nov 12, 2026 · Last seen Nov 12, 2026

Suggested fix: Shorten descriptions; move long documentation out of model-facing fields.

1 resolved or dismissed finding

HighResolvedSQ-TOOL-CONCEALMENT

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

First seen Oct 18, 2026 · Last seen Oct 23, 2026

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

Status history

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 12, 2026, 15:15 UTC

Last checked Nov 12, 2026, 15:15 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": "discover_present", "passed": true }, { "check": "result_type_present", "passed": true }, { "check": "cacheable_fields_present", "passed": true }, { "check": "server_info_in_meta", "passed": true }, { "check": "no_session_id", "passed": true }, { "check": "unknown_method_404", "passed": true }, { "check": "notification_202", "passed": true }, { "check": "get_405", "passed": true } ], "toolsListNondeterministic": false }