# io.github.freshfos/dropcoin-invoice

> German e-invoicing: generate XRechnung 3.0, pre-check and extract (incl. ZUGFeRD PDF). Paid.

- name: io.github.freshfos/dropcoin-invoice
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 73/100 flags: no-repository
- quality: 79/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.freshfos%2Fdropcoin-invoice
- tools: https://api.protogrid.dev/v1/servers/io.github.freshfos%2Fdropcoin-invoice/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "dropcoin-invoice": {
      "type": "http",
      "url": "https://invoice-api.dropcoin.workers.dev/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 98
- freshness: 85
- provenance: 35
- drivers: +reachable +uptime-96% ~updated-74d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 79/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: generate_xrechnung (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); validate_invoice (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); extract_invoice (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
- pass `tools.token_cost`: about 424 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 3, about 424 tokens to load them all
- tool set hash: ee2c75e9ac0894c0d474cb8d91d33188
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.freshfos/dropcoin-invoice.svg)](https://protogrid.dev/servers/io.github.freshfos/dropcoin-invoice)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://invoice-api.dropcoin.workers.dev/mcp (streamable-http, auth none, reachable true, uptime30d 0.95652175)

## Packages

_none_

## Tools (3)

- `extract_invoice`: Extract structured JSON (parties, lines, totals, payment data) from an e-invoice: XRechnung UBL/CII XML or a ZUGFeRD/Factur-X PDF (embedded XML is pulled from the PDF). Send exactly one of xml / pdfBase64. 5 credits, requires an API key.
- `generate_xrechnung`: Generate a German XRechnung 3.0 e-invoice (UBL 2.1, EN 16931) from plain JSON. Totals, VAT and rounding are computed server-side per the official rules. Mandatory: invoiceNumber, issueDate, buyerReference (Leitweg-ID), seller (+sellerContact with name/phone/email), buyer, paymentIban, lines (name, quantity, unitPrice, vatRate). 30 credits, requires an API key.
- `validate_invoice`: Pre-check an e-invoice (XRechnung UBL or CII XML) against the priority EN 16931 / XRechnung rules incl. cent-exact totals recalculation. Findings carry official rule IDs. A pre-check, not the official KoSIT validation. 10 credits, requires an API key.