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 · File & docs

Zovo PDF Sign

By theluckystrike

Puts a visible signature, initials and a date on a PDF document you attach.

WebsiteSource codeProductivity & docs
Connect to Zovo PDF Sign
Checks passed
12 / 22

2 failed · 8 not measured

Median response
164 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 164 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name pdf-sign.

  • 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 164 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 164 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

    19 of 19 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 2026-11-08T02:14:14.802318Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using Zovo PDF Sign

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-pdf-sign https://pdf-sign.zovo.one/mcp

Capabilities

Tools 2

find_signature_spots

Use this when the user wants to sign a PDF, fill in a signature line, find where to sign, or add initials or a date to a PDF form or contract. It reads the PDF's text positions and lists each place labelled Signature, Sign here, Signed, Initials, Date or Name, each blank ____ line, and each empty signature form field, with page, x, y (points from the top-left as displayed), width and a spot id for sign_pdf. Makes no file. Up to 15 MB; the first 50 pages are searched. Does not read scanned PDFs without a text layer (then give page and position to sign_pdf). Do not use for reading or summarizing a contract.

Discovered
sign_pdf

Use this when the user wants to sign a PDF, e-sign a document, add a signature, initials or a date to a PDF, or put their name on a signature line. It draws a visible mark on a copy of the user's PDF at found spots (ids from find_signature_spots) or at a page and position: a drawn signature (SVG path from the widget pad) or a typed name in an italic font, initials, a date in the chosen format from the user's date, or short text. It returns the signed copy as a download kept for about 1 hour and checks that each mark is in the file. It is not a certified digital signature: no certificate, identity check or audit trail. Does not fill form fields with data and does not send the document to anyone. Do not use for certificate-based digital signatures or for signing on someone else's behalf without their consent.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected164 ms2

Related servers

All alternatives

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

Explore alternatives to Zovo PDF Sign