Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Read staff, projects, clients, time, expenses and invoices; create time entries in BigTime.
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://bigtime.usefulapi.io/mcpRun this in your terminal
claude mcp add --transport http bigtime https://bigtime.usefulapi.io/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"bigtime": {
"url": "https://bigtime.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": {
"bigtime": {
"type": "http",
"url": "https://bigtime.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://bigtime.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.
bigtime_list_staffList staff members (id = staff sid, name, email). Good first call. BigTime API: GET /staff.
bigtime_get_staffGet one staff member by staff sid. BigTime API: GET /staff/detail/{sid}.
bigtime_list_projectsList projects (id, name, client, status). BigTime API: GET /project.
bigtime_get_projectGet one project by sid, with budget, dates and billing setup. BigTime API: GET /project/detail/{sid}.
bigtime_get_project_teamList the staff assigned to a project. BigTime API: GET /project/team/{sid}.
bigtime_list_clientsList clients (id, name, client id). BigTime API: GET /client.
bigtime_get_clientGet one client by sid. BigTime API: GET /client/detail/{sid}.
bigtime_list_project_tasksList the tasks of one project. BigTime API: GET /task/listByProject/{ProjectSid}.
bigtime_list_staff_tasksList the tasks assigned to one staff member. BigTime API: GET /task/ListByStaffer/{StaffSid}.
bigtime_get_taskGet one task by sid. BigTime API: GET /task/detail/{TaskSid}.
bigtime_get_timesheetList the time entries of one staff member in a date range. BigTime API: GET /time/Sheet/{staffsid}.
bigtime_list_project_timeList the time entries logged on one project in a date range. BigTime API: GET /time/ByProject/{Id}.
bigtime_get_time_entryGet one time entry by sid. BigTime API: GET /time/{sid}.
bigtime_get_daily_totalsGet the hours per day for one staff member in a date range. BigTime API: GET /time/TotalByDay/{staffsid}.
bigtime_get_expenseGet one expense entry by sid. BigTime API: GET /expense/detail/{sid}.
bigtime_list_expense_reportsList expense reports. BigTime API: GET /expense/reports.
bigtime_list_invoicesList issued invoices in a date range. BigTime API: GET /invoice/history.
bigtime_list_draft_invoicesList draft invoices, optionally in a date range. BigTime API: GET /invoice/drafts.
bigtime_get_invoiceGet one invoice by sid. BigTime API: GET /invoice/detail/{sid}.
bigtime_list_client_invoicesList the invoices of one client in a date range. BigTime API: GET /invoice/GetInvoicesByClientId.
bigtime_list_paymentsList payments received in a date range. BigTime API: GET /payment/history.
bigtime_get_report_definitionGet the definition (fields and filters) of a saved report. BigTime API: GET /report/detail/{id}.
bigtime_run_reportRun a saved BigTime report and return its rows. Pass the report filters as a JSON object, for example {"DT_BEGIN":"2026-01-01","DT_END":"2026-01-31"}. Read only. BigTime API: POST /report/data/{id}.
bigtime_create_time_entryWRITE: log time for a staff member on a project. Creates a new time entry in BigTime (it does not replace one). Set mark_submitted to submit it for approval at once. BigTime API: POST /time.
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 355 ms (HTTP 200)
No sign-in needed
Read 24 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 (1.2.3) 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, Recta
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
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
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Use your BigTime account from Claude, Cursor, or any MCP client. Read staff, projects, clients, tasks, time, expenses, invoices and payments, run saved reports and create time entries. Hosted, no local install: connect with your own credentials.
Live endpoint: https://bigtime.usefulapi.io/mcp · Homepage: https://usefulapi.io
https://bigtime.usefulapi.io/mcp.claude mcp add --transport http bigtime https://bigtime.usefulapi.io/mcp, then run /mcp to log in.{
"mcpServers": { "bigtime": { "url": "https://bigtime.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 BigTime credentials.
Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/bigtime/
On first connect you provide a BigTime API token and your BigTime firm id (a firm administrator creates the token in BigTime). The server validates it and stores it per user. No keys go in config files.
| Tool | Type | What it does |
|---|---|---|
bigtime_list_staff | read | List staff |
bigtime_get_staff | read | Get a staff member |
bigtime_list_projects | read | List projects |
bigtime_get_project | read | Get a project |
bigtime_get_project_team | read | Get a project team |
bigtime_list_clients | read | List clients |
bigtime_get_client | read | Get a client |
bigtime_list_project_tasks | read | List tasks of a project |
bigtime_list_staff_tasks | read | List tasks of a staff member |
bigtime_get_task | read | Get a task |
bigtime_get_timesheet | read | Get a timesheet |
bigtime_list_project_time | read | List time entries of a project |
bigtime_get_time_entry | read | Get a time entry |
bigtime_get_daily_totals | read | Get daily hour totals |
bigtime_get_expense | read | Get an expense entry |
bigtime_list_expense_reports | read | List expense reports |
bigtime_list_invoices | read | List invoice history |
bigtime_list_draft_invoices | read | List draft invoices |
bigtime_get_invoice | read | Get an invoice |
bigtime_list_client_invoices | read | List invoices of a client |
bigtime_list_payments | read | List payment history |
bigtime_get_report_definition | read | Get a report definition |
bigtime_run_report | read | Run a saved report |
bigtime_create_time_entry | write | Create a time entry |
bigtime_usage_status | meta | Usage status (free-tier meter) |
bigtime_request_feature | meta | Request a missing feature |
bigtime_upgrade | meta | Upgrade to Pro or Pro+ |
bigtime_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 user) | $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 bigtime_upgrade (it returns a Stripe Checkout link). Cancel any time with bigtime_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running bigtime_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
MIT — see LICENSE. Documentation only; the server is hosted.