LienDeadline

Name: LienDeadline
Author: LienDeadline

by LienDeadlineversion 0.5.7i★ –iComputer or cloud

Registry nameio.github.LienDeadline/liendeadline-mcp

Install

Overview

Description from the maker (original English)

Statute-cited lien and notice deadlines for material suppliers; lien guides for 50 states and DC.

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: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Other
You need to fill in: LIENDEADLINE_API_KEY

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: LIENDEADLINE_API_KEY

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
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 …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://mcp.liendeadline.com/mcp

Or run it on your computer

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

{
  "mcpServers": {
    "liendeadline": {
      "command": "npx",
      "args": [
        "-y",
        "liendeadline-mcp"
      ],
      "env": {
        "LIENDEADLINE_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http liendeadline https://mcp.liendeadline.com/mcp

Or run it on your computer

claude mcp add liendeadline --env LIENDEADLINE_API_KEY=your-value -- npx -y liendeadline-mcp

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": {
    "liendeadline": {
      "url": "https://mcp.liendeadline.com/mcp"
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "liendeadline": {
      "command": "npx",
      "args": [
        "-y",
        "liendeadline-mcp"
      ],
      "env": {
        "LIENDEADLINE_API_KEY": "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": {
    "liendeadline": {
      "type": "http",
      "url": "https://mcp.liendeadline.com/mcp"
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "liendeadline": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "liendeadline-mcp"
      ],
      "env": {
        "LIENDEADLINE_API_KEY": "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.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://mcp.liendeadline.com/mcp

Menu names can differ slightly by plan and over time.

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

Values you fill in

LIENDEADLINE_API_KEY secret env
Dedicated customer key required for supplier discovery and supplier/invoice calculations. Discovery uses no calculation allowance; completed calculations consume allowance. State guides need no key.

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

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

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 with the GitHub account LienDeadline, 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 checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… 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 Otheri

More stars than 0% of the other 32484 servers in this category
Published to the registry more recently than 80% of the other 32484 servers in this category
Basic checks equal to or better than 100% of the other 32484 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 LienDeadline 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?

You need to fill in: LIENDEADLINE_API_KEY

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.5.7) reached the registry 8 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: Spec Driven Development, Remote Desktop Commander, Recta

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.

Ask your AI assistant when your preliminary notice and mechanics lien deadlines fall, and get the statute behind every date. This MCP server connects Claude, ChatGPT, Cursor, VS Code and any other MCP client to LienDeadline, the deadline engine for US construction material suppliers. There is nothing to install: add one URL.

Quick start · What you can ask · Coverage · Tools · Privacy · liendeadline.com

Why LienDeadline

Miss a preliminary notice or a lien filing deadline and a supplier can lose its lien rights on the job, and with them the leverage to get paid. The rules change with the state, the project type and who hired you. LienDeadline turns your delivery dates into those deadlines and shows its work.

Deadlines from delivery dates. Preliminary notice and lien filing deadlines from your first and last delivery and a few yes, no or unknown questions.
The statute behind every date. Each deadline cites its source, so your team and your counsel can check it.
Never a guessed date. Missing facts and unsupported project scopes come back as "needs review", with the reason.
Lien guides for all 50 states and DC. Rule summaries, deadline tables and common questions, with statute citations.
Safe by design. Supplier discovery and calculations require a caller customer key; completed calculations consume plan allowance. Public guides need no account or key. Nothing sends notices, files liens or makes payments.

Quick start

Connecting to the hosted server and using public guides needs no install, account or key:

https://mcp.liendeadline.com/mcp

The no-authentication connection settings below cover the transport and public guides. Supplier discovery and calculations require the caller's dedicated customer key through the client's approved credential settings. Discovery does not consume calculation allowance; completed calculations do.

Client	How to add it
Claude (web, desktop, mobile)	Open LienDeadline in Claude's Connectors directory and connect it.
Claude Code	`claude mcp add --transport http liendeadline https://mcp.liendeadline.com/mcp`
Cursor
VS Code
ChatGPT	Open Plugins, select + → Add custom MCP server, paste the URL above and choose No authentication.
Codex CLI	`codex mcp add liendeadline --url https://mcp.liendeadline.com/mcp`
Any MCP client	Streamable HTTP at the URL above. Public guides need no authentication; supplier tools need a customer key.

Want your agent to ask the right questions too? The LienDeadline agent skill (GitHub) teaches it which facts to collect. The Claude Code plugin adds the skill and this server in one step:

claude plugin marketplace add LienDeadline/skills

claude plugin install liendeadline@liendeadline

Run it locally instead (npm, stdio)

The local server needs Node.js 22.22 or newer and serves every tool, including the two customer API tools. It ships npm-shrinkwrap.json, so npx installs the exact dependency versions each release was tested with.

Claude Desktop: download liendeadline-mcp- .mcpb from the latest release and open it.

Claude Code:

claude mcp add liendeadline -- npx -y liendeadline-mcp

Codex CLI:

codex mcp add liendeadline -- npx -y liendeadline-mcp

Cursor, Windsurf and other `mcpServers` clients:

"mcpServers": { "liendeadline": { "command": "npx", "args": ["-y", "liendeadline-mcp"] } } }

VS Code (.vscode/mcp.json):

"servers": { "liendeadline": { "type": "stdio", "command": "npx", "args": ["-y", "liendeadline-mcp"] } } }

What you can ask

Try asking:

"We delivered to a Florida commercial job for a subcontractor from Aug 3 to Sep 10, 2026. No final payment, no termination. When are our notice and lien deadlines?"
"Same job, but I don't know whether the owner made final payment. What can you tell me?"
"Walk me through Texas mechanics lien rules for a material supplier and cite the statutes."
"Which states do you have lien guides for? Show me Georgia's."

Coverage

What	Where	Needs
Supplier discovery and calculations (v3)	Current jurisdiction-specific scope support from `get_supplier_questions`; start here for the state, project type and hiring relationship	Customer key; discovery uses no calculation allowance; completed calculations consume allowance
Delivery-event baselines (v2)	Florida and Kansas private projects	Customer key; completed calculations consume allowance
Lien guides	All 50 states and DC	Nothing
Invoice-based deadlines	51 jurisdictions	A customer API key

The website calculator and v3 tools cover more jurisdictions than the v2 Florida/Kansas baseline. V3 discovery reports the current supported scope and its rule identities; a guide, research approval or state name alone does not establish a calculated date. When a scope or fact needs qualified review, the result explains why. An unavailable reviewed source returns an error with no date.

How it works

You ask your AI assistant about a job.
The assistant calls LienDeadline's tools over MCP with the state, the dates and your answers.
LienDeadline applies that state's rules and returns each deadline with its statute, or "needs review" with the reason.
Before showing a supplier deadline, the server checks that the result echoes exactly the facts you sent. A mismatch is reported as an error, never as a date.

Tools

Tool	What it does	Key
`calculate_supplier_deadlines`	Preliminary notice and lien filing deadlines from delivery dates and yes, no or unknown event answers	Customer
`get_supplier_questions`	Whether v3 covers a state, project type and hiring relationship, with its questions, sources and rule versions	Customer
`calculate_supplier_deadlines_v3`	Deadlines from the facts gathered with `get_supplier_questions`	Customer
`get_state_lien_guide`	One state's lien guide: rules, statute citations, deadline table and FAQs	None
`list_state_lien_guides`	Every guide (50 states and DC) with its code, title and slug	None
`calculate_lien_deadline`	Invoice-based deadlines (local server only)	Customer
`list_supported_states`	Jurisdictions the invoice calculation accepts (local server only)	Customer

Inputs, outputs and statuses are in the tool reference.

Privacy and safety

Account usage. Supplier discovery and calculations require a customer key. Discovery uses no calculation allowance; completed calculations consume plan allowance. Hosted callers send their own Authorization: Bearer on each request; local callers set LIENDEADLINE_API_KEY. The hosted server never uses a service-wide key. State guides remain public.
What's sent. The facts you give (state, dates, project type, who hired you and your yes, no or unknown answers) go to the LienDeadline API to calculate. Guide lookups send only a state code.
Hosted server. Its logs record the method, status and response time of each request, never your inputs. Google Cloud's own request log also records the URL, client IP address and user agent. The server may count usage anonymously in PostHog: tool name, success, duration and client family, with no inputs, results or IP addresses.
Local server. It has no telemetry of its own.

Details: LienDeadline privacy policy.

Not legal advice

Results are educational baselines calculated from published state rules. Statutes change and every project is different, so verify critical deadlines with counsel before relying on them. LienDeadline is not a law firm and does not file anything on your behalf.

LienDeadline

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Or run it on your computer

Or run it on your computer

Or run it on your computer

Or run it on your computer

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 Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Recta

README from the maker

Why LienDeadline

Quick start

What you can ask

Coverage

How it works

Tools

Privacy and safety

Not legal advice

Links