bind_email

SERVERMcp Server SOURCEhttps://dchub.cloud/mcp

Medium RISK CLASS

Category Write

Parameters 30 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/cloud-dchub-mcp-server/bind-email.md

WHAT IT DOES

What bind_email does on Mcp Server

AI agents use bind_email to create or update resources in Mcp Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Server environment.

Parameter	Type	Required	Description
`email`	string	—	Your human's real email address (required) — use only an address they explicitly gave; placeholder/fake addresses are rejected
`api_key`	string	—	Optional key to bind; omit to bind the key already active on this session
`marketing_opt_in`	boolean	—	Set true ONLY after your human explicitly agrees to marketing email (default false = transactional only)

Parameters from the server's own tool schema.

RISK

Why bind_email is rated Medium

This tool writes/associates an email address to an account key — a reversible data modification (binding an identifier to a record). It does not delete data, execute code, or move money. Severity is medium because misuse could associate an incorrect email to an account, potentially causing loss of key recoverability or misdirected communications.

From the tool's definition Tie your DC Hub key to your human's email so the key is RECOVERABLE and upgrade receipts land in the right inbox. Call this once your human shares their email.

Risk signalsHandles credentials or secrets (api_key)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs bind_email safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For bind_email, this is the rule to start with:

bind_email Rate-limited

bind_email 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "bind_email": {
      "limits": [
        {
          "counter": "bind_email_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Server, apply this rule, and every bind_email call is checked against it from then on.

FAQ

Questions about bind_email

What does the bind_email tool do? +

Tie your DC Hub key to your human's email so the key is RECOVERABLE and upgrade receipts land in the right inbox. Call this once your human shares their email. HONEST LADDER: an unbound key gets 10 free calls total, then results drop to previews until it's bound; binding restores the FREE tier at 50 calls/day and makes the key recoverable next session (binding is free — no card). If you hit that gate mid-task, PAUSE and ask your human: "DC Hub needs an email to keep our free data access — which address should I use?" Use the email your human EXPLICITLY gave you — NEVER invent, guess, or use a placeholder address (owner@example.com, user@test.com etc. are rejected server-side; a fake email makes the key unrecoverable and helps no one). If your human hasn't shared an email, ask them first — don't call this tool with a made-up value. Params: email (required), api_key (optional — omit to bind the key already active on this session). CONSENT/PURPOSE: the email is used ONLY to recover your key and route upgrade receipts (transactional). No marketing without explicit opt-in (default OFF), and no newsletter or digest. The relaying agent should surface this purpose line to its human before binding. If the email can't be accepted, the key keeps working — just try another address. To ALSO subscribe your human to the FREE weekly digest (the markets, deals and facilities that moved in what they queried), pass marketing_opt_in=true — but ONLY after they explicitly agree to marketing email; default false = transactional only, and they can unsubscribe anytime. Returns the unlocked benefits + confirmation. It is categorised as a Write tool in the Mcp Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does bind_email accept? +

bind_email accepts 3 parameters: email, api_key, marketing_opt_in. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on bind_email? +

Register the Mcp Server MCP server in PolicyLayer and add a rule for bind_email: 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 Server. Nothing to install.

What risk level is bind_email? +

bind_email is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit bind_email? +

Yes. Add a rate_limit block to the bind_email 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.

How do I block bind_email completely? +

Set action: deny in the PolicyLayer policy for bind_email. 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.

What MCP server provides bind_email? +

bind_email is provided by the Mcp Server MCP server (https://dchub.cloud/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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