Severity: HighStatus: OpenSQ-SERVER-AUTH-NONE-WRITE
State-changing tools available without authentication
The remote server lists state-changing tools without requiring authentication.
First seen · Last seen
Findings
Detected by Squatch rules from the server's metadata and protocol behavior. Latest completed scan: .
Severity: High2 findings
Suggested fix: Require MCP authorization for servers that expose state-changing tools.
Severity: HighStatus: OpenSQ-TOOL-EXFIL-DIRECTIVE
Asks the AI model to pass conversation data or secrets
Model-facing text instructs the AI model to place conversation content, prompts, tool history or secrets into tool arguments or external destinations.
First seen · Last seen
Suggested fix: Do not ask the model to include conversation, prompt or credential content in arguments.
Severity: Medium3 findings
Severity: MediumStatus: OpenSQ-TOOL-CREDENTIAL-ARGUMENT
Asks the AI model to supply credentials as arguments
A tool parameter asks the AI model to supply a password, token, key or similar credential, which the model can see and repeat.
First seen · Last seen
Suggested fix: Obtain credentials through server-side configuration or MCP authorization instead of tool arguments.
Severity: MediumStatus: OpenSQ-TOOL-INJECTION-INSTRUCTIONS
Instructions addressed to the AI model
Model-facing text contains instructions addressed to the AI model rather than a description of the tool (for example to override prior instructions, to act before using tools, or to react to trigger phrases).
First seen · Last seen
Suggested fix: Describe what the tool does and its parameters. Do not include instructions to the model about other tools, the user or the conversation.
Severity: MediumStatus: OpenSQ-TOOL-CREDENTIAL-ARGUMENT
Asks the AI model to supply credentials as arguments
A tool parameter asks the AI model to supply a password, token, key or similar credential, which the model can see and repeat.
First seen · Last seen
Suggested fix: Obtain credentials through server-side configuration or MCP authorization instead of tool arguments.
Severity: Low1 finding
Severity: LowStatus: OpenSQ-CONFORMANCE-MODERN-FAILURE
Protocol conformance checks failed
The server failed one or more MCP protocol conformance checks.
First seen · Last seen
Suggested fix: Review the failed checks against the MCP specification.
What this scan does not cover
- 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.