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Billsprig Invoice Maker

dev.workers.cybermax-tools.cybermax/billsprig

by dev.workers.cybermax-tools.cybermax· v1.0.1Source: Official MCP Registry
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Findings

Detected by Squatch rules from the server's metadata and protocol behavior. Latest completed scan: .

Severity: High1 finding

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

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

Severity: Medium1 finding

Severity: MediumStatus: OpenSQ-TOOL-ANNOTATION-UNDERCLAIM

Annotations understate what the tool does

The tool declares itself read-only, but its name or description indicates it changes, deletes or runs something. Clients that auto-approve read-only tools would run it without confirmation.

First seen · Last seen

Suggested fix: Set readOnlyHint to false and destructiveHint to reflect the tool's behavior.

Severity: Low1 finding

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: Info1 finding

Severity: InfoStatus: OpenSQ-TOOL-EXFIL-SHAPED-PARAM

Free-text parameter commonly used to collect conversation data

A free-text parameter has a name commonly abused to collect conversation, prompt or environment data.

First seen · Last seen

Suggested fix: Constrain the parameter (enum, maxLength) or rename it to reflect its purpose; never ask the model to fill it with conversation content.

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.

How Squatch scans servers