Verify sender identity and detect Business Email Compromise (BEC), spoofing, and impersonation. Includes live DNS DMARC and RDAP domain age checks at no extra cost. $0.01/call via skyfire-api-key header (Skyfire Buyer API Key). By using this service you accept the Terms of Service. Advisory servi...
Part of the Agent Safe server.
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AI agents call check_sender_reputation to retrieve information from Agent Safe without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though check_sender_reputation only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"check_sender_reputation": {}
}
}See the full Agent Safe policy for all 11 tools.
These attack patterns abuse exactly the kind of access check_sender_reputation gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Verify sender identity and detect Business Email Compromise (BEC), spoofing, and impersonation. Includes live DNS DMARC and RDAP domain age checks at no extra cost. $0.01/call via skyfire-api-key header (Skyfire Buyer API Key). By using this service you accept the Terms of Service. Advisory service only.. It is categorised as a Read tool in the Agent Safe MCP Server, which means it retrieves data without modifying state.
Register the Agent Safe MCP server in PolicyLayer and add a rule for check_sender_reputation: 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 Agent Safe. Nothing to install.
check_sender_reputation 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_sender_reputation 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_sender_reputation. 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_sender_reputation is provided by the Agent Safe MCP server (https://agentsafe.locationledger.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 11 Agent Safe tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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