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
SELISE Signature
com.selisesignature/signature
Findings
Detected by Squatch rules from the server's metadata and protocol behavior. Latest completed scan: .
Severity: High1 finding
Suggested fix: Require MCP authorization for servers that expose state-changing tools.
Severity: Medium2 findings
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-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: Low5 findings
Severity: LowStatus: OpenSQ-REPO-MISSING
No source repository linked
No source repository is linked in the registry entry.
First seen · Last seen
Suggested fix: Add a repository to server.json.
Severity: LowStatus: OpenSQ-TOOL-META-INSUFFICIENT
Description too thin to determine behavior
The tool's name and description do not state what it does.
First seen · Last seen
Suggested fix: Describe the action the tool performs, its target and its side effects.
Severity: LowStatus: OpenSQ-ENDPOINT-OUTSIDE-NAMESPACE
Endpoint host outside the namespace domain
The endpoint host is not inside the domain that the registry namespace was verified for.
First seen · Last seen
Suggested fix: Host the endpoint under the namespace domain, or verify the endpoint domain with Squatch.
Severity: LowStatus: OpenSQ-TOOL-LENGTH-ANOMALY
Unusually long model-facing text
Model-facing text is unusually long, which consumes context and leaves room to hide content.
First seen · Last seen
Suggested fix: Shorten descriptions; move long documentation out of model-facing fields.
Severity: LowStatus: OpenSQ-TOOL-LENGTH-ANOMALY
Unusually long model-facing text
Model-facing text is unusually long, which consumes context and leaves room to hide content.
First seen · Last seen
Suggested fix: Shorten descriptions; move long documentation out of model-facing fields.
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.