MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Payments & trading

io.github.freshfos/dropcoin-invoice

By freshfos

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

Source codeProductivity & docs
Connect to io.github.freshfos/dropcoin-invoice
Checks passed
10 / 22

4 failed · 8 not measured

Median response
56 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
3

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
220
Publisher identityCan the publisher be traced to its source?
222

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 56 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-06-18, serverInfo.name invoice-api.

  • Pass
    Lists tools

    tools/list returned 3 tools.

  • Pass
    Current protocol

    Negotiated 2025-06-18. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 56 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 56 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Fail
    Parameters documented

    4 of 13 parameters have a description (31%). The bar is 80%.

  • Fail
    Safety hints

    3 tools set neither readOnlyHint nor destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Not measured
    Website matches publisher

    This namespace is not a reverse domain, so the website comparison does not apply.

  • Fail
    Source repo linked

    No repository URL is on file.

  • Fail
    Repo owner matches

    The GitHub repository owner does not match the namespace login.

  • Pass
    Recently updated

    Updated 2026-08-07T18:16:18.600633Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using io.github.freshfos/dropcoin-invoice

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

claude mcp add --transport http io-github-freshfos-dropcoin-invoice https://invoice-api.dropcoin.workers.dev/mcp

Capabilities

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.

Discovered
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.

Discovered
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.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected56 ms3

Related servers

All alternatives

Same function and industry, ranked by checks passed then median latency.

Explore alternatives to io.github.freshfos/dropcoin-invoice