ContactZapp
Find, add and update your contacts across linked address books, and trigger syncs.
Connects to your ContactZapp account. Muse can search contacts by name, email, phone or free text, add new contacts, update their details, list your linked accounts, and start a manual sync. It can also read recent contact changes and duplicate alerts, and manage webhooks for automations. Requires a ContactZapp API key with the scopes you grant.
Try asking Muse: "Find Sam Lee's phone number in my ContactZapp contacts and add her new work email address."
See the most upvoted connectors
Source: Found in the official MCP Registry (app.contactz/contactzapp) · First listed November 3, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 2 h ago.
Is it safe to connect?
What Muse can see: You sign in to your own account with it, so Muse can reach what that account allows. Read what it asks for before you agree.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://app.contactz.app/api/v1/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Also use it in ChatGPT or Claude
ContactZapp is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
Add it to ChatGPT
- 1
Open ChatGPT settings
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
- 2
Turn on developer mode
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
- 3
Create the connector
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
- 4
Use it in a chat
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
Add it to Claude
- 1
Open Claude settings
In Claude, open Settings, then Connectors.
- 2
Add a custom connector
Choose Add custom connector, give it a name, and paste the link.
- 3
Connect and use it
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://app.contactz.app/api/v1/mcpWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 96ms. Worked in n/a of checks over 30 days.
Screening · November 3, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 10
getV1MeChecks an API key. Returns the user the key acts for, the user's plan and the key's scopes. Any live key may call it, so it is the call to make when you want to test a key. Send the key in every request as `Authorization: Bearer <key>`. Each operation names the scope it needs; a listV1ContactsFinds the user's contacts, or lists them. Give at most one of `email`, `phone` and `query`: - `email` and `phone` find the contacts that hold that address or number. An email is compared ignoring case, and a phone number ignoring formatting. - `query` is the same free-text searchcreateV1ContactCreates a contact. It is treated like a contact that arrives from a sync. The contact is written to one of the user's two-way accounts, which ContactZapp chooses: the earliest-linked account that keeps an address book and is not paused. The sync then copies it to every other two-getV1ContactReturns one contact. `id` is the contact's `id` or its `publicId` (`CS-0042`). A deleted or merged contact is a 404, and so is another user's contact.updateV1ContactChanges a contact's fields, as the app's edit does. Only the fields in the body change; a field the body leaves out keeps its value. The change is recorded in History as the user's, naming the API key, and written to every two-way account the contact is in, never to a read-only opostV1SyncStarts a sync, the same as pressing Sync now in ContactZapp. The run shows in History as a manual run. The answer is 202 with the state of the sync: `queued` or `running`. If a sync is already going, you get that one back and no second one starts. Needs the `sync:trigger` scope.listV1AccountsLists the user's linked accounts, as the Settings screen does: provider, name, sync direction, connection state and when each account last synced.listV1TriggerEventsPolling trigger: returns the newest events of one type first. This is what Zapier, Make and n8n poll to start an automation. Each item has an `id` that never changes. Polling again with nothing new returns the same ids, and a new event appears at the top. Deduplicate by `id`. `colistV1WebhooksLists the webhook subscriptions of this API key's user, oldest first: the URL, the event and whether it is `active` or `disabled`. The signing secret is never shown again after the subscription is made. Needs the `webhooks:manage` scope.createV1WebhookSubscribes a URL to one event. Zapier, Make and n8n call this when an automation is switched on. The URL must use HTTPS and reach a public address. The answer is 201 with the subscription and its signing `secret`, which is shown only here. Needs the `webhooks:manage` and `contactLink
https://app.contactz.app/api/v1/mcpQuestions about ContactZapp in Muse
How do I connect ContactZapp to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use ContactZapp to help me. It is a free service with an MCP server at https://app.contactz.app/api/v1/mcp. It needs an API key from contactz.app; ask me to enter it through your secure credential prompt. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is ContactZapp working right now?
At the last check (November 3, 2026, 14:01 UTC) the endpoint was working, answering in 96ms. It is checked every 15 minutes.
Is ContactZapp safe to connect to Muse?
It was screened on November 3, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can ContactZapp do in Muse?
It exposes 10 tools, including getV1Me, listV1Contacts, createV1Contact, getV1Contact. For example, you could ask Muse: "Find Sam Lee's phone number in my ContactZapp contacts and add her new work email address."
Follow ContactZapp
Made this app? Claim it or get a status badge
Is this yours?
This listing was added from public sources (Found in the official MCP Registry (app.contactz/contactzapp)). If you build ContactZapp, claim it to correct the details and get your badge.
Paste this on your site or README. It always shows the latest check.
<a href="https://musedirectory.ai/connector/contactzapp"><img src="https://musedirectory.ai/badge/contactzapp.svg" alt="ContactZapp on musedirectory.ai" width="236" height="40"></a>