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Free Invoice Generator by Alder MCP server

Which servers in the official MCP registry are Free Invoice Generator by Alder's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-24

← Back to Free Invoice Generator by Alder

Whose server it is
  • Registry namecom.alderinvoices/invoice-generatorverified in the MCP registry

The registry name sits under alderinvoices.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-24
  • Stateanswerschecked 2026-10-24
  • Tools4
  • Server calls itselfalder-invoices
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-24 the server answered initialize and tools/list without a sign-in. First answer in 95 ms.

Should an agent connect itNot proven either way yet
  • Its tools do every use case we checked: create a PDF invoice with line items and tax; add shipping, discounts and due dates to an invoice.
  • Checked on 2 of the 7 days it takes to judge reliability.

Once connected

  • For "create a PDF invoice with line items and tax", the likely first call is render_invoice_pdf.
  • For "add shipping, discounts and due dates to an invoice", the likely first call is draft_invoice.
  • Parameters are untyped or undescribed in 3 of 4 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 2, the first on 2026-10-24
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 2 so far
  • What an agent can do with it2 of 2 use cases
  • Answeredmeasuring2 of the 7 daily checks it takes to print a share
  • Median first answer158 ms
  • Space in an agent's context≈ 1,700 tokensthe definitions of all its tools (4), which an agent carries on every turn
  • Tool definitionsB · 88 of 100
  • Typed results0 of 4 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 3 of 4

What an agent can do with it

  • can do · create a PDF invoice with line items and tax
  • can do · add shipping, discounts and due dates to an invoice
  • not sure · draft an invoice by asking Claude or ChatGPT

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (30%), doing the product's job (25%), definitions (20%), context (10%) and use (15%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers4 tools · read 2026-10-24
  • draft_invoice

    Price an invoice (subtotal, tax after discount, shipping, total) and get a builderUrl that opens the free AI Invoice Generator builder prefilled. The human can download a PDF there, or connect Stripe to get a pay link that accepts partial…

  • list_invoice_templates

    List five editable sample invoices: hourly consulting, retainers, milestones, contractor labor/materials and deposit requests. Example rates in USD cents, not pricing advice. No account needed.

  • prepare_invoice_template

    Select a template by ID and add sender, customer and dates. Returns invoice JSON, calculated totals and an editable builderUrl. Example amounts need review. Nothing stored or sent.

  • render_invoice_pdf

    Generate a downloadable PDF artifact without a browser, account or storage. Requires sender/customer names, invoice number, dates and complete line items. Western European text only; unsupported characters or logos return an explicit…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "invoice-generator": {
      "type": "http",
      "url": "https://alderinvoices.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http alderinvoices https://alderinvoices.com/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://alderinvoices.com/mcp as a custom connector in the settings.

OpenAPI spec

4 paths, read 2026-10-24. Open the spec ↗

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.