Signa

Name: Signa
Author: signa-so

by signa-soversion 1.0.0i★ –iRuns in the cloud

Registry nameso.signa/signa

Install

Overview

Description from the maker (original English)

Search, screen and monitor trademarks across USPTO, EUIPO, WIPO, UKIPO and more with one API.

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 checksi3 of 3 passedChecked from public information; code not scanned yet
UsageiVery new★ –

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: Search & AI memory
You need to fill in: Authorization

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.
You fill in yourself: Authorization

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http signa https://api.signa.so/mcp --header 'Authorization: your-value'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "signa": {
      "url": "https://api.signa.so/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

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": {
    "signa": {
      "type": "http",
      "url": "https://api.signa.so/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

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 address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

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

Values you fill in

Authorization secret HTTP header
Optional. API key as 'Bearer sig_…' for headless clients; otherwise sign in with OAuth.

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

What it can do

The server asks you to sign in before it lists its tools.

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 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain signa.so (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 443 ms (HTTP 401)
✓ Pass
Sign-in with OAuth
Declares OAuth sign-in, so your AI app can take you to log in
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Search & AI memoryi

More stars than 0% of the other 5684 servers in this category
Published to the registry more recently than 89% of the other 5684 servers in this category
Basic checks equal to or better than 100% of the other 5684 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 Signa 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?

You need to fill in: Authorization

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 (1.0.0) reached the registry 4 days ago.

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: Context7, Codebase Memory, Exa

Alternatives

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

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

Context7

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

by upstashWidely used↓ 972.7K/wk★ 64.2KUpdated 2 days ago

Computer or cloud

Install

Codebase Memory

Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

by DeusDataWidely used↓ 18K/wk★ 48.1KUpdated 22 days ago

Runs on your computer

Install

Exa

Connect AI agents to Exa for web search, content fetching, and multi-step research.

by exa-labsGrowing★ 5.2KUpdated 2 months ago

Runs in the cloud✓ exa.ai

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.

Signa MCP server

The global trademark API.

Search, screen and monitor trademarks across USPTO, EUIPO, WIPO, UKIPO and more with one API.

Website · Docs · Pricing · Agent skills

About

Signa is the global trademark API, built for developers and AI agents. This hosted MCP server lets Claude, ChatGPT, Cursor and other MCP clients search and read trademark records from the world's registers, including USPTO, EUIPO, WIPO and UKIPO, in one format.

What you can do

Search trademarks by name, class, owner, status and office, with fuzzy, phonetic and lookalike-character matching. Each result shows why it matched.
Read the full record: status, goods and services, classes, owners, attorneys, events and proceedings.
Research owners and their portfolios, with registry owners linked to the companies behind them.
Look up attorneys and law firms and the marks they represent.
Find the Nice classes for a product or service, and check goods and services wording.
Check office rules such as deadlines, prosecution steps and opposition periods.
Monitor marks with watches and alerts (API key).

Who it's for

Trademark attorneys and paralegals, brand and legal teams, founders checking a name, and developers building trademark tools.

The data

Records come straight from the official registries and are kept current. Every record carries its source date, and Signa publishes which offices it covers. Ask Signa which offices are live, or see the docs.

Connect

Server URL: https://api.signa.so/mcp (Streamable HTTP, hosted, nothing to install)

Sign in with your Signa account (OAuth). For scripts and headless clients, use an API key instead. Free to start, no card required, with simple, public pricing.

Claude Code

claude mcp add --transport http signa https://api.signa.so/mcp

Claude.ai and Claude Desktop: Settings → Connectors → Add custom connector, paste https://api.signa.so/mcp, sign in. Or add Signa from the Claude directory.

ChatGPT (plans with MCP connectors): add a connector with https://api.signa.so/mcp and choose OAuth.

Cursor (.cursor/mcp.json)

{ "mcpServers": { "signa": { "url": "https://api.signa.so/mcp" } } }

VS Code (.vscode/mcp.json)

{ "servers": { "signa": { "type": "http", "url": "https://api.signa.so/mcp" } } }

API key instead of OAuth (any client that accepts headers)

{ "headers": { "Authorization": "Bearer sig_YOUR_KEY" } }

Clients that only run local (stdio) servers

npx mcp-remote https://api.signa.so/mcp

Example prompts

Is BRIGHTLY already registered for software in the US, EU or UK? Check classes 9 and 42.
Which Nice classes should a company selling smart home cameras and a subscription app file in?
Find marks similar to AURORA in class 9 at EUIPO, including ones that sound alike.
Show the full record for US trademark 1939139: status, owner, classes and recent events.
List Nike's trademarks at UKIPO with their current status.
List TTAB oppositions filed against marks owned by Apple Inc. in the last 12 months.
How long is the opposition period at EUIPO, and when does it end for this application?

Tools

Tools are grouped below; the full list with scopes is in Tools & permissions.

Group	What it does	Access
Search	Find marks by name, class, owner, status and office	OAuth or API key
Trademarks	Full records, events and proceedings for a mark; batch lookups	OAuth or API key
Owners and entities	Registry owners, the companies behind them, and their portfolios	OAuth or API key
Attorneys and firms	Attorneys and firms of record, their clients and marks	OAuth or API key
Proceedings	Oppositions, cancellations and other proceedings	OAuth or API key
Reference	Offices, jurisdictions, status codes, Nice classes, goods and services, design codes, deadline and opposition rules	OAuth or API key
Monitoring	Create, pause and manage watches; alerts, webhooks and events	API key
Account	Plan, pricing and usage	Usage needs an API key

With OAuth, the server exposes read-only tools. Write tools only manage your own watches and need an API key. Signa never files applications or changes official records.

FAQ

Is it free? Free to start, no card required. Paid plans add volume; see pricing.

Which offices does it cover? Major registers including USPTO, EUIPO, WIPO and UKIPO, with more added regularly. Ask Signa "which offices do you cover?" for the live list.

Can it change anything? Signed in with OAuth, it is read-only. With an API key it can also create and manage your own watches. It never files applications or touches official records.

Where does the data come from? From the official trademark registries. Every record shows its source date.

Is this legal advice? No. Signa is a research tool. Results don't establish legal clearance or replace advice from a qualified attorney.

This repository

The server is hosted by Signa; its code is not in this repository. This repository holds the public listing for MCP directories and registries: this README, server.json for the official MCP Registry, a Cursor plugin (.cursor-plugin/plugin.json and mcp.json) and the logo.

Support: support@signa.so · signa.so/contact

Signa Technologies Ltd

Signa

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

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 Search & AI memoryi

Common questions

Alternatives

Context7

Codebase Memory

Exa

README from the maker

Signa MCP server

About

What you can do

Who it's for

The data

Connect

Example prompts

Tools

FAQ

This repository