AI agents call search_coins to retrieve information from Agenti without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only search against CoinGecko's public cryptocurrency data. It retrieves information about coins but does not create, modify, delete, or execute any transactions or code. Even though the server enables financial operations, this specific tool is purely informational. The blast radius of misuse is minimal — an agent searching for coin data poses negligible risk.
From the tool's definition Tool description states 'Search CoinGecko for coins by name or ticker symbol' — a query operation that retrieves data without modifying state.
Documented attack patterns abuse exactly the kind of access search_coins gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Agenti, and nothing reaches the server without passing your rules. This is the rule we recommend for search_coins:
{
"version": "1",
"default": "deny",
"tools": {
"search_coins": {}
}
}search_coins is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search CoinGecko for coins by name or ticker symbol. It is categorised as a Read tool in the Agenti MCP Server, which means it retrieves data without modifying state.
Register the Agenti MCP server in PolicyLayer and add a rule for search_coins: 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 Agenti. Nothing to install.
search_coins 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 search_coins 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 search_coins. 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.
search_coins is provided by the Agenti MCP server (nirholas/agenti). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 73 Agenti tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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73 Agenti tools catalogued and risk-classified — across an index of 42,500+ MCP servers.