High Risk →

make_offer

Submit an offer (bid) on a registered ENS name. Validates the offer, provides market context (listing price, comparable sales, existing offers), and directs you to execute on the Vision marketplace. Requires wallet signature for on-chain execution via Seaport protocol. The name owner can accept,...

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

namewhisper/ens-tools Execute Risk 3/5

AI agents invoke make_offer to trigger processes or run actions in Name Whisper. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.

make_offer can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. Intercept enforces rate limits and validates arguments to keep execution within safe bounds.

Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.

namewhisper-ens-tools.yaml
tools:
  make_offer:
    rules:
      - action: allow
        rate_limit:
          max: 10
          window: 60
        validate:
          required_args: true

See the full Name Whisper policy for all 34 tools.

Tool Name make_offer
Category Execute
Risk Level High

View all 34 tools →

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

Browse the full MCP Attack Database →

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

make_offer is one of the high-risk operations in Name Whisper. For the full severity-focused view — only the high-risk tools with their recommended policies — see the breakdown for this server, or browse all high-risk tools across every MCP server.

What does the make_offer tool do? +

Submit an offer (bid) on a registered ENS name. Validates the offer, provides market context (listing price, comparable sales, existing offers), and directs you to execute on the Vision marketplace. Requires wallet signature for on-chain execution via Seaport protocol. The name owner can accept, counter, or decline on ensvision.com. Tip: Use get_valuation first to understand fair market value before making an offer.. It is categorised as a Execute tool in the Name Whisper MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on make_offer? +

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

What risk level is make_offer? +

make_offer is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit make_offer? +

Yes. Add a rate_limit block to the make_offer 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 make_offer completely? +

Set action: deny in the Intercept policy for make_offer. 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 make_offer? +

make_offer is provided by the Name Whisper MCP server (namewhisper/ens-tools). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policies on Name Whisper

Open source. One binary. Zero dependencies.

npx -y @policylayer/intercept
github.com/policylayer/intercept →
// GET IN TOUCH

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