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PopNx MCPMCP servers for people who use AI · explained in plain words

Builder Prime MCP by usefulapi

by m190version 1.6.3i★ –iRuns in the cloud
Registry nameio.usefulapi/builder-prime

Install

Overview

Description from the maker (original English)

Read Builder Prime projects and meetings, and create or update them from chat.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs in the cloud
  • Transport: Streamable HTTP
  • Category: Chat & email

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 3 of 3 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • Can do 14 things (tools) builderprime_list_projects, builderprime_get_project, builderprime_list_meetings, builderprime_get_meeting …
  • The registry lists no key to fill in.

You need

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://builder-prime.usefulapi.io/mcp

Run this in your terminal

claude mcp add --transport http builder-prime https://builder-prime.usefulapi.io/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "builder-prime": {
      "url": "https://builder-prime.usefulapi.io/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "builder-prime": {
      "type": "http",
      "url": "https://builder-prime.usefulapi.io/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://builder-prime.usefulapi.io/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

  • builderprime_list_projects

    Read projects with projects.read. Pages start at 0, max100. Vendor defaults last-modified-since to one year ago and forbids older dates; this is not a complete all-history report. Response includes customer names available on projects.

  • builderprime_get_project

    Read one project and its customer/status/value fields. Requires projects.read.

  • builderprime_list_meetings

    Read meetings beginning in a required date range (epoch milliseconds). Requires meetings.read; page is zero-based, limit max100.

  • builderprime_get_meeting

    Read one meeting; requires meetings.read.

  • builderprime_list_employees

    Read employees; requires employees.read. Pagination is zero-based, limit max100.

  • builderprime_get_employee

    Read one employee; requires employees.read.

  • builderprime_list_meeting_types

    Read meeting-types; requires meetingtypes.read. Pagination is zero-based, limit max100.

  • builderprime_get_meeting_type

    Read one meeting type; requires meetingtypes.read.

  • builderprime_list_meeting_results

    Read meeting-results; requires meetingresults.read. Pagination is zero-based, limit max100.

  • builderprime_get_meeting_result

    Read one meeting result; requires meetingresults.read.

  • builderprime_create_project

    Create a project attached to an existing client opportunity; projects.create required. Show the exact fields to the user before calling. Executes immediately, may trigger vendor workflows.

  • builderprime_update_project

    Modify only supplied project fields; projects.edit required. Status names must exactly match the account. Runs immediately; status changes may trigger workflows. No deletion/archiving.

  • builderprime_create_meeting

    Create a meeting for a client opportunity. meetings.create required. Confirm dates, timezone, attendee and type before calling; writes immediately and vendor notifications may occur.

  • builderprime_update_meeting

    Reschedule or edit meeting details; meetings.edit required. Runs immediately, no separate enforced approval. Blank location clears it. Read the existing meeting to check any unchanged start/end time before changing only one date.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain usefulapi.io (the registry checks domain ownership)

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • ✓ Pass

    Endpoint responds

    Responded in 928 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 14 tool descriptions and found no hidden instructions to the AI

Compared with others in Chat & emaili

  • More stars than 0% of the other 1760 servers in this category
  • Published to the registry more recently than 97% of the other 1760 servers in this category
  • Basic checks equal to or better than 100% of the other 1760 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Builder Prime MCP by usefulapi safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.6.3) reached the registry yesterday.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Vexa, emailmd, MCP WhatsApp Cloud

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Vexa

by Vexa-ai

Meeting bot and transcripts for Google Meet, Teams and Zoom. Live or after, speakers labelled.

Runs in the cloud★ 2,949Apache-2.0Updated 2 months ago
Install

emailmd

by anypost

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

Computer or cloud★ 1,385MITUpdated 30 days ago
Install

MCP server for WhatsApp Cloud API (Meta) — messages, media, and templates via Graph API

Runs on your computer★ 277MITUpdated 5 months ago
Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Builder Prime MCP by usefulapi

Hosted endpoint: https://builder-prime.usefulapi.io/mcp

Connect

  • Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://builder-prime.usefulapi.io/mcp.
  • Claude Code: claude mcp add --transport http builder-prime https://builder-prime.usefulapi.io/mcp, then run /mcp to log in.
  • VS Code: Add to VS Code.
  • Cursor and other clients: add the URL as a remote MCP server:
{

"mcpServers": { "builder-prime": { "url": "https://builder-prime.usefulapi.io/mcp" } } }

Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your Builder Prime credentials.

Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/builder-prime/

Verification limitation: real-account authentication, reads and writes have not been tested. Published example-tenant probes return a generic JSON 400 for missing and synthetic keys. This release passed mock integration and hosted Worker tests; real-tenant verification remains outstanding.

Tools

ToolTypeWhat it does
builderprime_list_projectsreadList projects
builderprime_get_projectreadGet project
builderprime_list_meetingsreadList meetings
builderprime_get_meetingreadGet meeting
builderprime_list_employeesreadList employees
builderprime_get_employeereadGet employee
builderprime_list_meeting_typesreadList meeting types
builderprime_get_meeting_typereadGet meeting type
builderprime_list_meeting_resultsreadList meeting results
builderprime_get_meeting_resultreadGet meeting result
builderprime_create_projectwriteCreate project
builderprime_update_projectwriteUpdate project
builderprime_create_meetingwriteCreate meeting
builderprime_update_meetingwriteUpdate meeting
builderprime_usage_statusmetaUsage status (free-tier meter)
builderprime_request_featuremetaRequest a missing feature
builderprime_upgrademetaUpgrade to Pro or Pro+
builderprime_cancel_subscriptionmetaCancel the Pro subscription

read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.

Pricing

PlanPriceLimit
Free$050 tool calls / month
Pro (per tenant and API key)$9/mo or $90/yr (2 months free)Unlimited*

\*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to support@usefulapi.io.

Pro covers this server only. Subscribe with builderprime_upgrade (it returns a Stripe Checkout link). Cancel any time with builderprime_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running builderprime_upgrade before then undoes the cancel. Or write to support@usefulapi.io.

License

MIT

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