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

Alder Invoices

By alderinvoices.com Verified namespace

Free invoice drafts, templates and direct PDF generation for AI agents. No account needed.

WebsiteAI models & agentsFinance & paymentsProductivity & docs
Connect to Alder Invoices
Checks passed
12 / 22

2 failed · 8 not measured

Median response
443 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
4

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Outdated check

Last connection measurement is over 24 hours old. Current availability is unknown.

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?
310
Publisher identityCan the publisher be traced to its source?
312

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 443 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-06-18, serverInfo.name alder-invoices.

  • Pass
    Lists tools

    tools/list returned 4 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 443 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 443 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

    33 of 58 parameters have a description (57%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Fail
    Source repo linked

    No repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-09-27T05:53:47.179339Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using Alder Invoices

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 alder-invoices https://alderinvoices.com/mcp

Capabilities

Tools 4

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 payments. Nothing is stored or sent.

Discovered
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.

Discovered
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.

Discovered
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 error, use the web builder for those. Does not send invoices or process payments.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected443 ms4

Related servers

All alternatives

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

Explore alternatives to Alder Invoices