usefulapiLawcus MCP server
Read Lawcus contacts, matters, leads, time and billing reports; create contacts and tasks. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
What can I ask?
Turn on the Lawcus connector, then ask in plain words. The AI picks the tools.
- Which of my open matters have a trust balance above $5,000?
- Show last month's accounts receivable report, grouped by client.
- List the new leads from the past two weeks and their contact details.
- Create a task on the Smith matter to file the motion by Friday and assign it to Jane.
What you can do with Lawcus in Claude and ChatGPT
For lawyers and law firm administrators who manage matters, time and billing in Lawcus.
Find matters with their status and trust balance
The AI lists matters filtered by status, name, client or dates, with billing type, trust and retainer balances, and opens one matter for its stage and settings.
Review new leads and where they came from
The AI lists leads with contact details and pipeline stage, and the lead sources and workflow stages, so you see the recent pipeline.
Run billing and receivable reports for a period
The AI reads the accounts receivable, revenue, payments collected and invoice history reports for a period. These reports need the Admin role.
Review time entries, expenses and billing items
The AI lists time entries and expenses by matter and date range, and billable activity by user, practice area or invoiced state, with time totals.
Look up or add a contact
The AI searches contacts by name, email or type and opens one, or creates a new person or company contact. Nothing is sent to the contact.
Changes dataCreate a task on a matter and assign it
The AI finds the matter and team members, then creates a task on the matter, assigned to the people you name, with no reminders set.
Changes dataHow do I connect Lawcus?
Before you connect
The login page asks for your Where is your Lawcus firm hosted? and Lawcus API long-life token.
In Lawcus click your profile icon → Settings → API Tokens → Add, pick the type API long-life token and copy it (it is shown once). The token acts with the permissions of its user; for limited access, give a dedicated user a custom role first. API access needs a Lawcus plan that includes it. Your token is used only to call the Lawcus API on your behalf; it is never shown to anyone.
Claude claude.ai · Desktop
- Open Customize → Connectors, then click + Add → Add custom connector.
- Enter the name Lawcus and this URL, then click Add:https://
lawcus. usefulapi. io/ mcp - Claude opens the login page: enter your Where is your Lawcus firm hosted? and Lawcus API long-life token.
- In a chat, click + → Connectors and turn on Lawcus.
Team and Enterprise: an Owner adds the connector for the organization first.
ChatGPT chatgpt.com
- Open Plugins, click +, then Add custom MCP server.
- Enter the name Lawcus and this URL, choose OAuth as the authentication, confirm the warning and create it:https://
lawcus. usefulapi. io/ mcp - ChatGPT opens the login page: enter your Where is your Lawcus firm hosted? and Lawcus API long-life token.
- In Plugins, install Lawcus, then choose it in a chat.
No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Claude Code
Run this command, then run /mcp in Claude Code to log in:
Cursor
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"lawcus": {
"url": "https://lawcus.usefulapi.io/mcp"
}
}
} VS Code
Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"lawcus": {
"type": "http",
"url": "https://lawcus.usefulapi.io/mcp"
}
}
} Codex
Run these commands. The second one opens the login page:
Other clients
Windsurf, Cline, Zed and other MCP clients: add this URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser.
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: the login page asks for your Where is your Lawcus firm hosted? and Lawcus API long-life token. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
Pricing
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper user | $9/mo · $90/yr | 10,000 tool calls / month |
| Pro+per user | $39/mo · $390/yr | 100,000 tool calls / month |
Each paid plan covers this Lawcus server only. Ask your AI to run lawcus_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with lawcus_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with lawcus_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
Tools 31
Show all 31 tools (the AI picks them for you)
Read only · 25
- Get my Lawcus user
lawcus_get_meLawcus: the user the API token belongs to (id, uuid, name, timezone, role such as OWNER/ADMIN/MEMBER). - Get firm details
lawcus_get_firmLawcus: the firm (team) details: name, address, currency, locale and phone numbers. - List team members
lawcus_list_team_membersLawcus: the people on the firm's team with id, uuid, name, role and hourly rate. Ids are used in matter, task and report filters. - Search Lawcus
lawcus_searchLawcus: global search across contacts, matters and leads for a keyword. - List contacts
lawcus_list_contactsLawcus: list contacts (people and companies; clients are contacts), filterable by name, email, type or update date. Paged with skip/take. - Get a contact
lawcus_get_contactLawcus: one contact by UUID, with addresses, phones, emails and custom fields. - List matters
lawcus_list_mattersLawcus: list matters (cases) with status, client, billing type, trust and retainer balances. Filter by status, name, number, client or dates. Paged with skip/take; the reply also carries opened/closed counts. - Get a matter
lawcus_get_matterLawcus: one matter by UUID with its client, workflow stage, billing settings, balances and custom fields. - List leads
lawcus_list_leadsLawcus: list leads (prospective matters) with client contact details and pipeline stage. Paged with skip/take. - Get a lead
lawcus_get_leadLawcus: one lead by UUID. - List lead sources
lawcus_list_lead_sourcesLawcus: the firm's lead sources (Website, Referral, Google, ...). Ids go into lead and contact filters. - List workflows
lawcus_list_workflowsLawcus: the workflows (matter and lead pipelines) with their ids. - List workflow stages
lawcus_list_workflow_stagesLawcus: the stages of one workflow (pipeline). - List tasks
lawcus_list_tasksLawcus: list tasks, optionally by completion, assignee, matter or tag. The API returns the whole list; the reply is cut to `limit`. - List time entries
lawcus_list_time_entriesLawcus: time entries (hours worked, rate, total, matter, invoiced or not). The API returns all entries; filter here by matter and date range, reply cut to `limit`. - List expenses
lawcus_list_expensesLawcus: expenses logged against matters. The API returns all expenses; filter here by matter and date range, reply cut to `limit`. - List billing items
lawcus_list_billing_itemsLawcus: billable activity (time entries, expenses and flat fees) with payment details, filterable by date range, user, practice area, matter, client and invoiced state. Also returns time totals for today/week/month/year. - List interactions
lawcus_list_interactionsLawcus: logged client interactions (emails, calls, secure messages) with subject, matter and contact. Paged with skip/paginate. - Accounts receivable report
lawcus_report_accounts_receivableLawcus report (needs the Admin role): unpaid invoices by age (who owes the firm what). - Matter balance report
lawcus_report_matter_balanceLawcus report (needs the Admin role): balance summary of all matters, optionally trust balances only. - Attorney revenue report
lawcus_report_revenueLawcus report (needs the Admin role): revenue by attorney for a period. - Time entries summary report
lawcus_report_time_entriesLawcus report (needs the Admin role): time entries summarized per user for a period. - Payments collected report
lawcus_report_payments_collectedLawcus report (needs the Admin role): payments the firm collected in a period. - Invoice history report
lawcus_report_invoice_historyLawcus report (needs the Admin role): summary of issued invoices for a period. - Client trust balance report
lawcus_report_client_trustLawcus report (needs the Admin role): client trust (IOLTA) balances; zero balances hidden unless display_zero is true.
Changes data · 2
- Create a contact
lawcus_create_contactWRITE: create a new contact in Lawcus (a person or a company). It does not send anything to the contact. Person needs first_name and last_name; Company needs name. Check lawcus_list_contacts first to avoid duplicates. - Create a task
lawcus_create_taskWRITE: create a task in Lawcus, optionally on a matter and assigned to team members. Lawcus may email or SMS the assignees if reminders are set; no reminders are set by this tool.
Your usefulapi plan · 4
- Usage status (free-tier meter)
lawcus_usage_statusReport the caller's current usage: the plan, calls used this month, the limit of the plan (the free monthly cap or the Pro fair use limit), remaining, and whether the limit is reached. Read-only; does not count against the meter. - Request a missing feature
lawcus_request_featureTell usefulapi that the user needs something the Lawcus tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter. - Upgrade to Pro or Pro+
lawcus_upgradeGet a paid plan for Lawcus (the free tier caps monthly usage). Pro: 10,000 tool calls a month, for normal use — plan "monthly" ($9/month) or "yearly" ($90/year, 2 months free). Pro+: 100,000 tool calls a month, for automations and heavy use — plan "plus" ($39/month) or "plus_yearly" ($390/year). Without a plan it returns both Pro and Pro+, each with a payment link, for the user to choose; with a plan, one link. An existing Pro subscription changes to Pro+ in place: call without confirm first, as the reply states the exact charge for this account (the price difference for the rest of the period, or in a free Pro trial the full Pro+ price, as the trial ends); then call with confirm: true. Cancel any time: the plan then runs to the end of the paid period, so it also suits a one-time job. A link opens Stripe Checkout in the browser; after payment the account upgrades automatically. Does not count against the meter. - Cancel the Pro subscription
lawcus_cancel_subscriptionCancel the caller's Lawcus Pro subscription at the end of the paid period (no refund for the current period; Pro continues until then, then the free tier applies). Requires confirm: true. Run lawcus_upgrade later to undo the cancel before the period ends. Does not count against the meter.
FAQ
What can I do with Lawcus in Claude or ChatGPT?
Find matters with their status and trust balance. Review new leads and where they came from. Run billing and receivable reports for a period. Review time entries, expenses and billing items. Look up or add a contact. Create a task on a matter and assign it. See what you can do for the details.
Is this an official Lawcus product?
No. usefulapi is an independent service. It is not affiliated with or endorsed by Lawcus. The server calls the Lawcus API with your own Lawcus access, so it sees only the data that your account can see.
Can I connect Lawcus to Claude or ChatGPT?
Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.
What do I need to connect?
The login page asks for your Where is your Lawcus firm hosted? and Lawcus API long-life token. See Before you connect for where to find them.
Do I put my Lawcus key or an Authorization header in the client config?
No. 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: the login page asks for your Where is your Lawcus firm hosted? and Lawcus API long-life token. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
How do you keep my Lawcus credentials?
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Lawcus API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in Lawcus.
Can the AI change my Lawcus data?
Yes, if you approve it. 2 of the 27 Lawcus tools can create or change data. The other 25 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
What does it cost?
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this Lawcus server only. Cancel any time: your paid plan then runs to the end of the paid period. Run lawcus_usage_status to see how many calls you used.
How do I subscribe or cancel?
Ask the AI to run lawcus_upgrade and choose Pro or Pro+, billed monthly or yearly: it returns a Stripe Checkout link. If you already have Pro, ask to change it to Pro+. After you confirm, your existing subscription changes in place, keeps its billing interval and charges the price difference for the rest of the period immediately. To cancel, run lawcus_cancel_subscription. Your paid plan continues to the end of the paid period.
What if a Lawcus tool that I need is missing?
Tell the AI what you wanted to do. It can send the request with lawcus_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Which AI clients can I use?
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.
Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.