LienDeadline

Give your AI agent a lien deadline playbook: it asks for the facts that matter, gets each date from LienDeadline, and cites the statute behind it.

Built for US construction material suppliers and their credit and finance teams. The skill works with Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and other agents that read Agent Skills. When a date can't be confirmed, your agent says so and explains why. It never guesses.

Install · Try asking · Coverage · Privacy · FAQ · liendeadline.com

Why it matters

Miss a preliminary notice or a lien filing deadline and a supplier can lose its lien rights on the job, and with them its leverage to get paid. The deadlines depend on the state, the project type and who hired you. They can also move when something happens on the job, such as the owner's final payment or a notice of extension.

Ask a general-purpose AI assistant and it may answer from memory, with a confident date and no source. This skill gives your agent a better routine: collect the facts, get the date from LienDeadline's calculation, show the statute, and flag anything it can't confirm.

What the skill does

• Asks the right questions. The project's state and type, who hired you, your first and last delivery dates, and plain yes, no or unknown answers about events that can move a deadline.
• Gets the dates from LienDeadline. It uses the LienDeadline tools when they're connected, or calls LienDeadline's public API directly. No account or key.
• Shows its work. Every deadline comes with its status, the statute behind it, and any warnings or assumptions. The agent reports a date only when LienDeadline's answer matches the facts it sent.
• Flags instead of guessing. A missing fact, an "unknown" answer or a case that isn't covered yet comes back as "needs review" with the reason, never a made-up date.
• Points you to the rules. It links the state's lien guide so you and your counsel can check the details.

In action

Install

Any agent, one command. Adds the skill to Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and other agents that read Agent Skills:

npx skills add LienDeadline/skills

Or install it for a specific agent:

Claude Code. The plugin adds the skill and connects LienDeadline's hosted tools. Nothing runs on your computer.

claude plugin marketplace add LienDeadline/skills
claude plugin install liendeadline@liendeadline

Inside a Claude Code session, run /plugin marketplace add LienDeadline/skills, then /plugin install liendeadline@liendeadline.

Codex. The plugin adds the skill and the LienDeadline tools.

codex plugin marketplace add LienDeadline/skills
codex plugin add liendeadline@liendeadline

Gemini CLI. The extension adds the skill and the LienDeadline tools.

gemini extensions install https://github.com/LienDeadline/skills

GitHub CLI. Adds the skill for GitHub Copilot and the other agents it supports.

gh skill install LienDeadline/skills liendeadline

Claude on the web, desktop or mobile. Nothing to install: add LienDeadline from Claude's Connectors directory.

Any other MCP client. Connect https://mcp.liendeadline.com/mcp (Streamable HTTP, no sign-in). If your agent reads Agent Skills, add the skill with the first command above as well.

Try asking

• "We supplied 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 changes?"
• "Can I still file a lien for my last delivery on a Kansas job?"
• "Which states have lien guides? Show me Ohio's rules for material suppliers."

If your agent needs a fact you haven't given, it asks. If you don't know the answer, say so: the deadline that depends on it comes back as "needs review", with the reason.

What it covers

	Today
Calculated deadlines	Preliminary notice and lien filing for Florida and Kansas private projects
More states	Added as each state's reviewed rules are released. The skill checks what's live for your project, so you never get a date for a state that isn't ready.
Everything else	"Needs review" with the reason: other states, public projects, and any deadline that depends on a fact you don't know
Lien guides	All 50 states and DC, with statute citations

Results are calculated baselines, not legal advice.

How it works

flowchart LR
    agent["AI agent
with the LienDeadline skill"]
    ld["LienDeadline
MCP tools or HTTPS API"]
    result["Statute-cited
deadlines"]
    agent -->|delivery facts and event answers| ld
    ld -->|dates with statutes or a review flag| result

The skill is plain-language instructions with no code of its own. Your agent follows them and sends LienDeadline only the structured facts it needs.

• Claude Code plugin: uses LienDeadline's hosted server, so nothing runs on your computer.
• Codex, Cursor and Gemini CLI packages: start the open-source LienDeadline MCP server (GitHub) on your computer with npx, pinned to one exact release. This needs Node.js 22.22 or newer.
• The skill on its own: uses the LienDeadline tools if you've connected them, or calls the public API over HTTPS.

Privacy and safety

• Read-only. It never sends notices, files liens or makes payments.
• No account or key. The skill, the hosted tools and the public API work without sign-in.
• Only the facts it needs. State, delivery dates, project type, who hired you, and yes, no or unknown answers, with an event's date when the answer is yes. LienDeadline uses them to calculate your dates and doesn't keep them.
• Anonymous usage counts. LienDeadline may count usage in aggregate with PostHog: which tool or API operation ran, the type of client, whether it worked and how long it took. When your agent calls the API directly, the skill adds a fixed X-LienDeadline-Client: skill header so those calls count as skill use. The counts never include your project facts, results, IP address or account details, and no user profiles are built. The local MCP server sends no telemetry of its own.

Server logs and retention are covered in LienDeadline's privacy policy.

FAQ

Is this legal advice? No. LienDeadline calculates baselines from published state rules and shows the statute behind each date. Statutes change and every project is different, so check critical deadlines with qualified counsel before you rely on them. LienDeadline is not a law firm and files nothing for you.

Which states can it calculate? Florida and Kansas private projects today. More states are added as their reviewed rules are released, and the skill checks what's live for your project each time. Lien guides cover all 50 states and DC.

Do I need an account or API key? No. Install the skill and ask.

What if I don't know one of the answers? Say "unknown". The deadline that depends on it comes back as "needs review" with the reason. The other deadline can still be calculated.

Will it send notices or file liens for me? No. It reads and calculates only.

Links

• Website: liendeadline.com, with a setup guide for this skill
• State lien guides: liendeadline.com/state-lien-guides
• MCP server: liendeadline.com/mcp and LienDeadline/liendeadline-mcp
• Help center: liendeadline.com/help
• Support: support@liendeadline.com, liendeadline.com/contact or an issue in this repository
• Privacy policy: liendeadline.com/privacy
• Terms of service: liendeadline.com/terms
• Security: report issues privately as described in SECURITY.md

For contributors: the repository layout, checks and manifest notes are in CONTRIBUTING.md.

License

MIT