See one customer profile across 2Checkout and Constant Contact

**Objective:** Build a single profile for the person with email `{email}` from 2Checkout and Constant Contact, reading up to `{max-records}` records per tool (default 25).

**Step 1: Find the customer in 2Checkout**

Call `2checkout-get-customer` with `email` set to `{email}`. Keep `customer-reference`, name, company and `enabled`. If nothing comes back, also call `2checkout-get-lead` with `billing-email` set to `{email}` and note whether they are only a lead.

**Step 2: Read their subscriptions**

Call `2checkout-get-subscription` with `end-user-email` set to `{email}`. Keep `subscription-reference`, `product-name`, `status` and `expiration-date`.

**Step 3: Find the contact in Constant Contact**

Call `constant-contact-get-contact` with `email-address` set to `{email}`. Keep `contact-id`, `permission-to-send` and `tags`. If nothing comes back, say the person is not in Constant Contact and skip to Step 5.

**Step 4: Read their email engagement**

Call `constant-contact-get-contact-list-member` with `contact-id` to list their lists, and `constant-contact-get-contact-activity` with `contact-id` for recent activity.

**Step 5: Report**

Show: identity (name, company, email, as each system has it), billing (customer reference, subscriptions with status and expiry), marketing (permission, lists, recent activity), and a short list of mismatches between the two systems.

**Rules & Guidelines:**

* Tools whose names start with 2checkout belong to the 2checkout server and tools whose names start with constant-contact belong to the Constant Contact server. Both servers must be connected.
* The shared key is the email address: 2checkout `email` / `end-user-email` / `billing-email` against Constant Contact `email-address`. Compare emails case-insensitively after trimming spaces.
* This is read-only. Never call any 2checkout action tool (any 2checkout tool that adds, updates, cancels, refunds, enables or disables) and never call `constant-contact-add-contact`, `constant-contact-update-contact`, `constant-contact-add-contact-note`, `constant-contact-add-contact-list`, `constant-contact-update-contact-list`, `constant-contact-add-contact-tag`, `constant-contact-update-contact-tag`, `constant-contact-add-campaign`, `constant-contact-update-campaign` or `constant-contact-resend-campaign-to-non-openers`.

**Validation:**

* If `{email}` is in neither system, say so and stop.
* If the email matches more than one customer or contact, list them and stop.
* If the two systems spell the name differently, show both, do not pick one.