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.
Ten tools against Cascade's ceiling of 100, and it pairs naturally with mcp-invoice, whose reference the note names, and with mcp-statement-of-account, which nets the credit against what is owed; budget the three at roughly 35 tools when you decide what else fits alongside them.
| 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_config.json, and the key inside it is mcpServers.
| Scope | Path |
|---|---|
| macOS, Windows and Linux | ~/.codeium/windsurf/mcp_config.json |
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.
Windsurf reads its own config, so here it is:
The config block:
{
"mcpServers": {
"credit-note": {
"command": "node",
"args": ["/absolute/path/to/mcp-servers/servers/credit-note/dist/index.js"]
}
}
}The 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:
{
"mcpServers": {
"credit-note": {
"command": "npx",
"args": ["-y", "@theluckystrike/mcp-credit-note"]
}
}
}Save and reopen the MCP Servers list; Cascade picks it up without restarting the editor.
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.
Read this first: mcp_config.json applies to the legacy Cascade agent only. The Devin Local agent, the default for new tabs, takes its servers from the Devin CLI config files, so a correct entry here can still be invisible in a fresh tab. The other hard number is a cap: Cascade reaches at most 100 tools at once, and every enabled server spends from it.
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.
~/.codeium/windsurf/mcp_config.json, under mcpServers. Reach it from the MCPs icon at the top right of the Cascade panel, or Devin Settings, Cascade, MCP Servers.
That file applies to the legacy Cascade agent only. The Devin Local agent, the default for new tabs, reads its servers from the Devin CLI config files instead. Check which agent the tab runs.
Cascade reaches at most 100 tools at any one time, and every enabled server spends from that single budget. MCP Credit Note contributes 10 tools, so keep the enabled list short rather than counting servers.
MCP Credit Note in detail · The same server in VS Code and Cline · Every server in Windsurf · Guides · Windsurf docs · Buy Pro