resolve_spf_chain

Trace the full SPF include chain for a domain. Recursively resolves all includes, shows lookup count, tree depth, and flags circular includes or exceeding the 10-lookup limit.

Part of the Blackveil Dns MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

blackveil-dns Write

// WHEN AI AGENTS USE THIS TOOL

AI agents use resolve_spf_chain to create or modify resources in Blackveil Dns. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

// WHY ENFORCE A POLICY ON RESOLVE_SPF_CHAIN

Without a policy, an AI agent could call resolve_spf_chain repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Blackveil Dns.

// RECOMMENDED POLICY

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

com-blackveilsecurity-dns.yaml

tools:
  resolve_spf_chain:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full Blackveil Dns policy for all 51 tools.

// DETAILS

Tool Name resolve_spf_chain

Category Write

MCP Server Blackveil Dns MCP Server

Risk Level Medium

// MORE BLACKVEIL DNS TOOLS

Write generate_dkim_config Write generate_dmarc_record Write generate_fix_plan Write generate_mta_sts_policy Write generate_rollout_plan Write generate_spf_record Write map_supply_chain Read analyze_drift

View all 51 tools →

// WHAT CAN GO WRONG

Agents calling write-class tools like resolve_spf_chain have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

// OTHER WRITE TOOLS ACROSS MCP SERVERS

Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.

AbraFlexi contact_create AbraFlexi contact_update AbraFlexi evidence_create AbraFlexi evidence_update AbraFlexi invoice_issued_update AbraFlexi invoice_received_create

// RELATED READING

// FAQ

What does the resolve_spf_chain tool do? +

Trace the full SPF include chain for a domain. Recursively resolves all includes, shows lookup count, tree depth, and flags circular includes or exceeding the 10-lookup limit.. It is categorised as a Write tool in the Blackveil Dns MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on resolve_spf_chain? +

Add a rule in your Intercept YAML policy under the tools section for resolve_spf_chain. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Blackveil Dns MCP server.

What risk level is resolve_spf_chain? +

resolve_spf_chain is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit resolve_spf_chain? +

Yes. Add a rate_limit block to the resolve_spf_chain rule in your Intercept 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.

How do I block resolve_spf_chain completely? +

Set action: deny in the Intercept policy for resolve_spf_chain. 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.

What MCP server provides resolve_spf_chain? +

resolve_spf_chain is provided by the Blackveil Dns MCP server (blackveil-dns). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

resolve_spf_chain

Let agents act without letting them run wild.