List posts in a collection (public endpoint — no auth required). Paginated.
AI agents call wf_list_posts to retrieve information from Crow without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries posts from a collection without creating, modifying, executing code, or deleting data. It is explicitly marked as a public endpoint with no authentication required, and pagination indicates simple data retrieval. The blast radius of misuse is minimal—an agent could only over-query or enumerate posts, not cause data loss or unintended side effects.
From the tool's definition Tool name is 'wf_list_posts' and description states 'List posts in a collection (public endpoint — no auth required). Paginated.' The verb 'List' and the absence of any modification or deletion capability indicate a read-only retrieval operation.
Documented attack patterns abuse exactly the kind of access wf_list_posts gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Crow, and nothing reaches the server without passing your rules. This is the rule we recommend for wf_list_posts:
{
"version": "1",
"default": "deny",
"tools": {
"wf_list_posts": {}
}
}wf_list_posts is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List posts in a collection (public endpoint — no auth required). Paginated. It is categorised as a Read tool in the Crow MCP Server, which means it retrieves data without modifying state.
Register the Crow MCP server in PolicyLayer and add a rule for wf_list_posts: 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 Crow. Nothing to install.
wf_list_posts 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 wf_list_posts 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 wf_list_posts. 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.
wf_list_posts is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Crow, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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576 Crow tools catalogued and risk-classified — across an index of 43,000+ MCP servers.