crow_add_contact
Repair or add a Crow contact directly from their Crow ID and public keys — the recovery path when an invite handshake half-completed and messages are stuck as requests. Idempotent: completes an existing partial/request contact in place instead of duplicating it.
This record as markdown: /tools/kh0pper-crow/crow-add-contact.md
What crow_add_contact does on Crow
AI agents use crow_add_contact to create or update resources in Crow, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Crow environment.
Why crow_add_contact is rated Medium
This tool creates or modifies contact records in the system. While it has a recovery/repair purpose (idempotent, non-duplicating), it still performs reversible write operations on contact data. It does not delete data (would be Destructive), execute arbitrary code (would be Execute), or move money (would be Financial).
From the tool's definition Tool description states it will "add a Crow contact" and "completes an existing partial/request contact in place". These are create/modify operations on contact data.
Attacks that exploit this kind of access
The rule that runs crow_add_contact 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_add_contact, this is the rule to start with:
crow_add_contact stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. 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_add_contact call is checked against it from then on.
Questions about crow_add_contact
Repair or add a Crow contact directly from their Crow ID and public keys — the recovery path when an invite handshake half-completed and messages are stuck as requests. Idempotent: completes an existing partial/request contact in place instead of duplicating it. It is categorised as a Write tool in the Crow MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Crow MCP server in PolicyLayer and add a rule for crow_add_contact: 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_add_contact is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the crow_add_contact 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_add_contact. 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_add_contact 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.
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