List code snippets metadata (without code content) with filtering by language and tags. Use this to get a large list of available code snippets.
AI agents call list_snippets to retrieve information from MCP-NOSTR 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 query operation that retrieves and filters metadata from the Nostr network's code snippet index. It does not create, modify, delete, or execute anything. The filtering by language and tags is a standard search/list pattern typical of Read category tools. The explicit mention of returning only metadata without code content further confirms no modification or execution occurs.
From the tool's definition 'List code snippets metadata (without code content)' — retrieves data without side effects. Returns metadata listings of snippets.
Documented attack patterns abuse exactly the kind of access list_snippets gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP-NOSTR, and nothing reaches the server without passing your rules. This is the rule we recommend for list_snippets:
{
"version": "1",
"default": "deny",
"tools": {
"list_snippets": {}
}
}list_snippets is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List code snippets metadata (without code content) with filtering by language and tags. Use this to get a large list of available code snippets. It is categorised as a Read tool in the MCP-NOSTR MCP Server, which means it retrieves data without modifying state.
Register the MCP-NOSTR MCP server in PolicyLayer and add a rule for list_snippets: 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 MCP-NOSTR. Nothing to install.
list_snippets 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 list_snippets 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 list_snippets. 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.
list_snippets is provided by the MCP-NOSTR MCP server (pablof7z/tenex-tools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP-NOSTR, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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9 MCP-NOSTR tools catalogued and risk-classified — across an index of 43,000+ MCP servers.