Samecontact

Name: Samecontact
Author: GillMacedo

by GillMacedoversion 0.1.0i★ –iRuns on your computer

Registry nameio.github.GillMacedo/samecontact

Install

Overview

Description from the maker (original English)

Find duplicate customers and contacts in CSV exports. Your data stays on your machine.

PopNx MCP’s three pillars

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

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

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 on your computer
Transport: stdio
Category: Other

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "samecontact": {
      "command": "npx",
      "args": [
        "-y",
        "samecontact",
        "serve"
      ]
    }
  }
}

Run this in your terminal

claude mcp add samecontact -- npx -y samecontact serve

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "samecontact": {
      "command": "npx",
      "args": [
        "-y",
        "samecontact",
        "serve"
      ]
    }
  }
}

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": {
    "samecontact": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "samecontact",
        "serve"
      ]
    }
  }
}

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.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

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

Runs on your computer; the tool list appears in your AI app after you install it.

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 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account GillMacedo, which owns the repo
… 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
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32680 servers in this category
Published to the registry more recently than 83% of the other 32680 servers in this category
Basic checks equal to or better than 100% of the other 32680 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 Samecontact safe?

It passed 1 of 1 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 on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 7 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, EmbeddedCI BenchPod

Alternatives

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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.

samecontact: find duplicate customers and contacts in CSV files

Clean up a CRM export, customer list or mailing list by finding rows that are the same person, even when the name, email or phone is written differently. For small businesses, sales teams and marketers.

Most customer lists contain the same person several times: "Robert Jones" and "Bob Jones", or Ana.Silva+news@ and ana.silva@. Duplicates waste mailing costs, annoy customers and overstate your numbers, while a simple dedupe in a spreadsheet misses most of them. samecontact compares emails, phone numbers, names and companies, then says how sure it is and why. It never merges anything itself. It's an MCP server and a single Go binary, with no account, no API key and no network access.

What you can ask your agent

"Find duplicates in my customer list."
"How many unique customers do I really have?"
"Clean up this HubSpot or Salesforce export before I import it."
"Which contacts in this mailing list are the same person?"

Install

As a Claude Code plugin, which adds the MCP server and a skill that tells Claude when to use it. You need Node, which runs the server through npx:

claude plugin marketplace add GillMacedo/samecontact claude plugin install samecontact@samecontact-marketplace

For other MCP clients:

"mcpServers": { "samecontact": { "command": "npx", "args": ["-y", "samecontact", "serve"] } } }

The npm install covers macOS and Linux. On Windows, use go install for now.

Or build the binary with Go 1.27 or newer:

go install github.com/GillMacedo/samecontact@latest

Usage

Try it on the sample file in examples/. All the people in it are made up.

$ go run . find examples/contacts.csv SAME PERSON (2) rows 3, 4 Ana Silva / Silva, Ana [same email; same name and company] rows 5, 6 Robert Jones / Bob Jones [same phone and matching name] LIKELY: check these (1) rows 7, 8 Maria Costa [same name and company] REVIEW: a person should decide (2) rows 11, 12 John Smith / John Smith [same name, different companies] rows 13, 14 Lena Fischer / Omar Haddad [same email, different names: may be a shared address] SKIPPED row 16: no name, email or phone 13 contacts, 3 duplicate groups, 3 extra rows, 2 pairs to review

With an installed copy, run samecontact find contacts.csv. Add --out marked.csv to write a copy with dup_group and dup_level columns, which you can sort in a spreadsheet. Your original file is never changed. Add --json for machine-readable output.

How it decides

Level	Evidence
Same person	Same email with matching names, same phone with matching names, or an identical row
Likely	Same name and company, same name and work email domain, or same phone with one name missing
Review	One email or phone under different names, the same name alone, or a similar name at the same company

It understands nicknames, initials, accents, name order, small typos, phone formats, Gmail dots and +tags. Addresses like info@ and free domains like Gmail don't count as evidence of the same person.

MCP tools

Tool	What it does
`contacts_find_duplicates`	Returns groups and review pairs, with a limit for large files
`contacts_inspect_csv`	Shows detected columns and row counts, without row contents

Both are read-only. contacts_find_duplicates returns names from your file to the MCP client, so they reach whichever AI model you use. The CLI keeps everything on your machine.

FAQ

How do I remove duplicate contacts from a CSV? Run samecontact find contacts.csv --out marked.csv, review the groups, then delete or merge rows in your CRM or spreadsheet. The tool doesn't delete anything.

Does it work with HubSpot, Salesforce or Mailchimp exports? It reads CSV and recognizes common column names, and you can name others with --columns email=Mail,name=Who. It hasn't been tested on each product's real exports yet.

Is my customer data uploaded? The tool has no network code. Through MCP, results go to whichever AI model your client uses.

Limits

It finds candidates, and a person should check them before merging anything.
Name matching is built for Western names and common nicknames, so it will miss some variations in other naming systems.
Phones compare on their last 10 digits, so two numbers in different countries could collide.
It reads CSV only, up to 50 MB.
So far it has been tested on made-up data, not real exports. If yours fails, please open an issue with the column headers, not your data.

Contributing

Contributions are welcome, from people and from people working with AI agents. See CONTRIBUTING.md. Good first issues:

Add column names from more CRMs and languages
Add more nicknames, including non-English ones
Add an XLSX reader
Add a merge command that suggests one combined row per group
Add a plugin icon

How pull requests work

Open a PR. Fork the repo, work on a branch, and keep it to one change. Write a title that says what changes for users, because it becomes the changelog line: feat: goes under Added and fix: under Fixed.
Automatic check. Code changes need tests, and make test must pass. Changes over 30 lines need a linked open issue (Closes # ), and a PR can have at most 800 changed lines. If something is missing, a comment tells you what to fix.
Review. Claude reviews each PR automatically. Code PRs also get a security review and are tested in a sandbox. The review then merges the PR or asks for changes. PRs that change CI, agent settings, npm or Python dependencies, vendored code or build files can't be merged this way, and a comment says so. The same goes for anything the security review doesn't clear.
Release. A merge that changes what users install becomes a new version within about two hours, with a GitHub Release and, if the project has one, its npm package. Docs and CI changes wait for the next release.

AI disclosure

This project was largely generated with Claude Code and reviewed by its maintainer.

About me

I'm Giulliano Macedo, and I build developer tools at GoTech Solutions. Follow along or get in touch:

GitHub: GillMacedo
LinkedIn: giulliano
X: @giumacedo

If samecontact cleaned up your list, a star helps others find it.

MIT licensed.

Built by Giulliano Macedo, GoTech Solutions · LinkedIn · X

Samecontact

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

EmbeddedCI BenchPod

README from the maker

samecontact: find duplicate customers and contacts in CSV files

What you can ask your agent

Install

Usage

How it decides

MCP tools

FAQ

Limits

Contributing

How pull requests work

AI disclosure

About me