Simulate a swap BEFORE executing it. Shows expected output, price impact, and safety. CRITICAL: Call this before ANY swap to avoid losses. Args: token_in: Input token address (use 0x4200000000000000000000000000000000000006 for WETH) token_out: Output token address amount_eth: Amount in ETH (defau...
Part of the AIGEN — Open Bounty Protocol for AI Agents server.
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AI agents call simulate_swap to retrieve information from AIGEN — Open Bounty Protocol for AI Agents 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 simulate_swap 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": {
"simulate_swap": {}
}
}See the full AIGEN — Open Bounty Protocol for AI Agents policy for all 57 tools.
These attack patterns abuse exactly the kind of access simulate_swap 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.
Simulate a swap BEFORE executing it. Shows expected output, price impact, and safety. CRITICAL: Call this before ANY swap to avoid losses. Args: token_in: Input token address (use 0x4200000000000000000000000000000000000006 for WETH) token_out: Output token address amount_eth: Amount in ETH (default 0.01) chain: base, ethereum, arbitrum, optimism. It is categorised as a Read tool in the AIGEN — Open Bounty Protocol for AI Agents MCP Server, which means it retrieves data without modifying state.
Register the AIGEN — Open Bounty Protocol for AI Agents MCP server in PolicyLayer and add a rule for simulate_swap: 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 AIGEN — Open Bounty Protocol for AI Agents. Nothing to install.
simulate_swap 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 simulate_swap 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 simulate_swap. 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.
simulate_swap is provided by the AIGEN — Open Bounty Protocol for AI Agents MCP server (https://cryptogenesis.duckdns.org/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 57 AIGEN — Open Bounty Protocol for AI Agents tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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