FIREWALL: Describe ANY crypto action and I'll check if it's safe. Call this BEFORE every transaction. I check all addresses involved for scams, honeypots, and phishing. Returns GO or BLOCK. Examples: - "Swap 0.1 ETH for 0x4ed4...ed on base" - "Approve 0x1234... to spend my U...
Bulk/mass operation — affects multiple targets
Part of the Firewall MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents invoke execute_safely to trigger processes or run actions in Firewall. 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.
execute_safely 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.
tools:
execute_safely:
rules:
- action: allow
rate_limit:
max: 10
window: 60
validate:
required_args: trueSee the full Firewall policy for all 2 tools.
Agents calling execute-class tools like execute_safely have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Execute risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
execute_safely is one of the high-risk operations in Firewall. 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.
FIREWALL: Describe ANY crypto action and I'll check if it's safe. Call this BEFORE every transaction. I check all addresses involved for scams, honeypots, and phishing. Returns GO or BLOCK. Examples: - "Swap 0.1 ETH for 0x4ed4...ed on base" - "Approve 0x1234... to spend my USDC" - "Transfer 100 USDC to 0xabcd..." - "Buy token 0x5678... on arbitrum" Args: action_description: Natural language description of what you want to do . It is categorised as a Execute tool in the Firewall MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Add a rule in your Intercept YAML policy under the tools section for execute_safely. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Firewall MCP server.
execute_safely is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the execute_safely 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.
Set action: deny in the Intercept policy for execute_safely. 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.
execute_safely is provided by the Firewall MCP server (safeagent/firewall). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept