Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Read Bill4Time clients, projects, time entries, expenses, invoices, payments, users and contacts.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
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Works in Claude on the web, desktop and mobile:
https://bill4time.usefulapi.io/mcpRun this in your terminal
claude mcp add --transport http bill4time https://bill4time.usefulapi.io/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"bill4time": {
"url": "https://bill4time.usefulapi.io/mcp"
}
}
}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.
Paste into .vscode/mcp.json in your project
{
"servers": {
"bill4time": {
"type": "http",
"url": "https://bill4time.usefulapi.io/mcp"
}
}
}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:
https://bill4time.usefulapi.io/mcpMenu names can differ slightly by plan and over time.
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.
Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.
bill4time_list_clientsList clients (id, name, billing name, email, phone, city, account manager, status, billing rate type, currency). Filter by status, exact client name, id or creation date. Street addresses and tax ids are not returned. GET /clients.
bill4time_list_projectsList projects (matters): id, name, client, status, billing method, rate overrides, assigned user, created/closed/due dates. Filter by status, billing method, client, id or creation date. GET /projects.
bill4time_list_time_entriesList time entries: client, project, user, entry date, billable and labor time, billable amount, rate, activity, ABA litigation code, billing status, invoice id, public description. Filter by client, project, user, invoice, entry date range or billing status. Private notes and con
bill4time_list_expensesList expenses: client, project, user, expense date, cost and sell price, quantity, type, billing status, invoice id, public description. Filter by client, project, user, invoice, expense date range, billing status or exact expense type. Private notes are not returned unless inclu
bill4time_list_invoicesList invoices: client, project, invoice date, status (prebill or finalized), paid status, totals (invoice, labor, expense, late fee), terms and notes. Filter by status, paid status, client, project, id or invoice date range. GET /invoices.
bill4time_list_paymentsList payments: client, project, amount, date, type, method, public note. Filter by client, project, id or payment date range. Check numbers are not returned; the private note only with include_private_notes. GET /payments.
bill4time_list_usersList the firm's users: name, email, user type, status, department, position, billing and overtime rate. Birth dates, addresses, phone numbers and contractor pay rates are not returned. Filter by status or id. GET /users.
bill4time_list_contactsList contacts: name, email, work and mobile phone, city, status, creation date. Filter by status, id or creation date. Street addresses, home phone and notes are not returned. GET /contacts.
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
The registry name was verified against the domain usefulapi.io (the registry checks domain ownership)
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Responded in 468 ms (HTTP 200)
No sign-in needed
Read 8 tool descriptions and found no hidden instructions to the AI
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
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.
The registry does not list a required key, though some servers ask you to sign in on first use.
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.
The GitHub repo last changed –, and the latest version (1.22.3) reached the registry yesterday.
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.
In the same category: Spec Driven Development, Remote Desktop Commander, debuff
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
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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.
Use Bill4Time from Claude, Cursor, or any MCP client — read clients, projects, time entries, expenses, invoices, payments, users and contacts with typed filters and sorting. Read-only; confidential fields such as addresses, tax ids and pay rates are never returned. Needs a Bill4Time v1 API key. Hosted, no local install: connect with your own Bill4Time credentials.
Live endpoint: https://bill4time.usefulapi.io/mcp · Homepage: https://usefulapi.io/bill4time
https://bill4time.usefulapi.io/mcp.claude mcp add --transport http bill4time https://bill4time.usefulapi.io/mcp, then run /mcp to log in.{
"mcpServers": { "bill4time": { "url": "https://bill4time.usefulapi.io/mcp" } } }
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, and the login page asks for your Bill4Time credentials.
Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/bill4time/
| Tool | Type | What it does |
|---|---|---|
bill4time_list_clients | read | List clients |
bill4time_list_projects | read | List projects (matters) |
bill4time_list_time_entries | read | List time entries |
bill4time_list_expenses | read | List expenses |
bill4time_list_invoices | read | List invoices |
bill4time_list_payments | read | List payments |
bill4time_list_users | read | List users (timekeepers) |
bill4time_list_contacts | read | List contacts |
bill4time_usage_status | meta | Usage status (free-tier meter) |
bill4time_request_feature | meta | Request a missing feature |
bill4time_upgrade | meta | Upgrade to Pro or Pro+ |
bill4time_cancel_subscription | meta | Cancel the Pro subscription |
read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Pro (per API key) | $9/mo or $90/yr (2 months free) | Unlimited* |
\*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to support@usefulapi.io.
Pro covers this server only. Subscribe with bill4time_upgrade (it returns a Stripe Checkout link). Cancel any time with bill4time_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running bill4time_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
MIT © usefulapi. Not affiliated with or endorsed by Bill4Time.