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

Read-only probes

MCP server · Code & DevOps

Zovo Envelope Printer

By theluckystrike

Print envelopes with addresses at home.

WebsiteSource code
Connect to Zovo Envelope Printer
Checks passed
12 / 22

2 failed · 8 not measured

Median response
99 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
2

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?
400
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 99 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name envelope-printer.

  • Pass
    Lists tools

    tools/list returned 2 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 99 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 99 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.

  • Pass
    Parameters documented

    26 of 26 parameters have a description (100%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or 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 2026-11-08T02:12:39.315716Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using Zovo Envelope Printer

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 zovo-envelope-printer https://envelope-printer.zovo.one/mcp

Capabilities

Tools 2

find_envelope_size

Use this when the user asks what size envelope to use or how big an envelope is ("what size envelope for a 5x7 card", "#10 envelope size", "a7 envelope size", "envelope for a letter folded in thirds", "dl envelope size in inches"). Give a card, photo or folded sheet size and it lists the envelopes it fits with at least 1/8 in to spare, smallest first; give an envelope name and it returns its size in inches and mm, what it is used for and its USPS mail shape (letter, nonmachinable or large envelope). Does not print anything (use generate_envelope_pdf) and does not give postage prices.

Discovered
generate_envelope_pdf

Use this when the user wants to print addresses on envelopes ("print envelopes with addresses", "print envelopes from excel", "#10 envelope template", "a7 envelope template", "address wedding invitation envelopes", "print address on envelope"). First convert any pasted text or image of addresses into recipients objects (name, address1, address2, city, state, zip, country). Makes a PDF with one page per envelope at the real envelope size (#10 default, #9, #6 3/4, Monarch, A2, A6, A7, A9, 6x9, 9x12, 10x13, DL, C6, C5, C4 or custom), the return address in the top-left corner and the delivery address inside the USPS read area, in the destination country's line order. Each address gets an envelope; problems (missing ZIP, unknown state, wrapped lines) are listed. Also a CSV. Does not buy postage, print stamps or barcodes, verify addresses, or print label sheets.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected99 ms2

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