Test connectivity to api.objekt.sh. Use this to diagnose sandbox egress issues. If it fails, the user needs to add api.objekt.sh to their domain allowlist (Settings → Capabilities → Domain Allowlist).
AI agents call check_connection to retrieve information from Mcp Upload without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only checks network connectivity (a read/diagnostic operation) with no side effects. It does not upload, modify, or delete any data. The worst case of misuse is negligible — it simply pings an endpoint.
From the tool's definition Test connectivity to api.objekt.sh... diagnose sandbox egress issues
Attacks that exploit this kind of access
Test connectivity to api.objekt.sh. Use this to diagnose sandbox egress issues. If it fails, the user needs to add api.objekt.sh to their domain allowlist (Settings → Capabilities → Domain Allowlist). It is categorised as a Read tool in the Mcp Upload MCP Server, which means it retrieves data without modifying state.
Register the Mcp Upload MCP server in PolicyLayer and add a rule for check_connection: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Mcp Upload. Nothing to install.
check_connection is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the check_connection rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for check_connection. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
check_connection is provided by the Mcp Upload MCP server (@objekt.sh/mcp-upload). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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