crow_find_contacts
Search for Crow users by email hash. Privacy-preserving: only SHA-256 hashes are compared, never plain text emails. Users must opt in to discovery by setting their email hash.
This record as markdown: /tools/kh0pper-crow/crow-find-contacts.md
What crow_find_contacts does on Crow
AI agents call crow_find_contacts to retrieve information from Crow without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why crow_find_contacts is rated Low
This is a query/search tool that retrieves contact information with built-in privacy controls. While it searches for user data, it operates within a consent-based framework (opt-in discovery) and uses hashed comparisons to protect privacy. The operation has no side effects beyond retrieving matching user records.
From the tool's definition Tool performs a search operation ('Search for Crow users') with no modification capability. Description emphasizes privacy-preserving aspects ('only SHA-256 hashes are compared, never plain text emails') and user consent ('Users must opt in').
Attacks that exploit this kind of access
The rule that runs crow_find_contacts safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Crow, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For crow_find_contacts, this is the rule to start with:
crow_find_contacts is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Crow, apply this rule, and every crow_find_contacts call is checked against it from then on.
Questions about crow_find_contacts
Search for Crow users by email hash. Privacy-preserving: only SHA-256 hashes are compared, never plain text emails. Users must opt in to discovery by setting their email hash. 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 crow_find_contacts: 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.
crow_find_contacts 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 crow_find_contacts 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 crow_find_contacts. 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.
crow_find_contacts 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.
More on Crow, and thousands of servers like it.
This server
Across the catalogue