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Credit notes against an invoice or standalone: drafts, finalization, rendering and totals, all in integer minor units. You issue a credit note against an invoice or standalone: the recipient, the reason (returned goods, overcharge, discount correction, service issue, other), line items with quantity, unit price and tax rate, and the currency. Every credit note starts as a draft with a CN-DRAFT id no client sees; credit_note_finalize burns the final CN-YYYY-NNNN number in the issue date's year and freezes it, because a finalized credit note is a document the client may have seen, and it can neither be edited nor deleted from there. The counter is written before the record, so a crash burns a number rather than reusing one, and the final series never has a gap. credit_note_render returns Markdown to paste into an email or a self-contained printable HTML page, drafts marked with a DRAFT banner, and credit_note_summary totals what was credited per currency, reason and month.
`claude mcp add credit-note` at user scope is the level that matches both the meter and the data: ten finalized notes lifetime is a freelancer's working years rather than a repository's, and drafts are free and unlimited, so working the wording out in a project chat costs nothing against the cap.
| You say | Tool |
|---|---|
| Issue a credit note to Acme GmbH against INV-2026-0042: two USB-C cables returned unopened, 3 at 24.99 plus one adapter at 9.99, 23% VAT, and refund the 12.00 express shipping. | credit_note_create |
| Render it as Markdown so I can paste it into the email. | credit_note_render |
| What did I credit in March, by reason? | credit_note_summary |
The line math is documented so the printed document reproduces on a calculator: gross is quantity times unit price rounded half-up once, tax is per line rounded half-up on its own base, and the note totals are plain integer sums of the already-rounded line values. On the worked note, 3 x 2,499 at 23% and 1 x 999 at 23% and 1 x 1,200 untaxed give subtotal 9,696, tax 1,954 and total 11,650, and 2.5 x 3,333 rounds half-up to 8,333, never banker's 8,332. The unit suite asserts both.
The file is .mcp.json, and the key inside it is mcpServers.
| Scope | Path |
|---|---|
| local (default) | ~/.claude.json, this project only |
| project | .mcp.json at the repository root |
| user | ~/.claude.json, every project |
If you also run Claude Desktop, the shortest path there is one click: credit-note.mcpb
from the latest release opens as an extension, with no JSON and no terminal.
Claude Code reads its own config, so here it is:
From the terminal, against a built file:
claude mcp add --scope user credit-note -- node /absolute/path/to/mcp-servers/servers/credit-note/dist/index.js
claude mcp list # health-check it before the first prompt
# or --scope project, committed to .mcp.json for the teamThe node command above wants a built file. From a clone, once:
git clone https://github.com/theluckystrike/mcp-servers.git
cd mcp-servers && npm install
npm run build -w packages/mcp-license -w servers/credit-noteThat writes servers/credit-note/dist/index.js, and its absolute path is the one argument
the config needs.
The npm packages are not published yet, so the form below returns a 404 today. It is here because it is what the entry becomes the day the publish lands, with nothing else changed:
claude mcp add credit-note -- npx -y @theluckystrike/mcp-credit-noteNo restart. The entry is picked up in the next session, and `/mcp` reconnects one on demand.
Nothing is published to npm yet, so the working install paths are the ones above: the .mcpb bundle from the latest release, a clone and build, or the hosted URL.
There is no hosted endpoint for this one yet. MCP Credit Note runs locally over stdio with the config above, which is also the only form in which it reads and writes files on your own disk. Thirty of the servers in this collection are served at https://mcp.zovo.one/mcp/<name> over MCP streamable HTTP; https://mcp.zovo.one/mcp/connect lists them and prints a ready URL for each.
The `--` is load-bearing: it separates Claude Code's own options, such as --transport, --env and --scope, from the command that runs the server. And the default scope is local, private to you and to the directory you ran it in, so adding it in the wrong folder leaves the tools absent with no error at all.
Free: Ten finalized credit notes, lifetime. Drafts, edits, deletion of drafts, listing, reading, rendering and the totals summary are free and unlimited on every tier, because finalizing is the metered act: that is what turns a draft into the document the client sees. Free renders carry a one-line footer. Pro is $19 once, verified offline.
Local, the default, writes ~/.claude.json and is private to you and that directory. --scope project writes .mcp.json at the repository root, shared through version control. --scope user loads it everywhere.
Measured, not documented: of three fresh projects, one first prompt made zero tool calls although initialize answered in 1.05 seconds. Run claude mcp list once first: it prints Connected, and the next run used the tool.
Not this one. The office suite starts every sibling server as its own child process, so it runs locally over stdio. Thirty of those children are hosted individually at https://mcp.zovo.one/mcp/<name> if you want a no-install route; open https://mcp.zovo.one/mcp/connect and it prints a ready URL for each.
MCP Credit Note in detail · The same server in Claude Desktop and Cursor · Every server in Claude Code · Guides · Claude Code docs · Buy Pro