Uptime (30d)%100.0

Latency (p50)497 msfaster than 39% of servers

Protocol eralegacy

Tools6

com.mailmergepdf/site

Description

Mail Merge PDF: the site's own MCP server — checker, enquiry (enquiry = a human handoff, not a...

What our measurements say

com.mailmergepdf/site is a remote MCP server published at mailmergepdf.com. It has been probed 12 times since 9/12/2026. It answered in 12 of them (100.0%), a near-uninterrupted record. Median response time is 497 ms, placing it among the faster endpoints. It offers a narrow, focused set of 6 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.

LegacyLegacy ⚠Website ↗Version: 1.0.0First probe: 2026-09-12 15:21:42Last probe: 2026-09-13 14:49:35

Agent readability score

Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.

Agent readability score

Tools have clear roles but lack detailed error handling and some ambiguous naming.based on measured tool list

Strengths

Tool names align with their purpose in decision-making workflows.
Parameters are well-defined with required/optional clarity.

Weaknesses

Descriptions are overly brief for tools like 'checker_start'.
Ambiguous tool names (e.g., 'checker_tree') lack context.
No explicit error handling or constraints documented.

checker_start — Description does not explain when or why to use it.
checker_tree — Name and description lack clarity on its purpose.
submit_enquiry — Description is cut off, missing critical details.

Verdict

Tools provide a structured workflow but suffer from vague descriptions and missing error handling, which may hinder agent reliability.

9/13/2026, 3:22:05 PM

Event narrative

Raw observations

Run	Era	Modern	ms	Legacy	ms	Versions

Supported versions

2025-11-25

as declared by server/discover + initialize

Capabilities

tools

Schema score

100

6 tools

Schema compliance

tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.

100/100

Excellent6 tools

tools/list schema valid
inputSchema is valid JSON Schema
Smoke test not run this round
Cold-start: cold 220ms → warm 225ms (penalty 0ms)

Tools

Tools the server advertised in the latest measurement — measured, not catalog-claimed.

checker_start0 params
The first question of the Which mail merge to PDF route? decision guide.
checker_answer2 params · 2 required
Given a question id and the chosen option (its `choice` index), return the next question or the final verdict.
- questionstringrequired
- choiceintegerrequired
checker_tree0 params
Every question, option and verdict of the Which mail merge to PDF route? guide, for reasoning end to end.
enquiry_describe0 params
Read first. States plainly what submit_enquiry does on Mail Merge PDF: it starts an enquiry with human providers who quote directly. Nothing is bought, ordered or paid; no quote is guaranteed; it is free. Also returns who receives the details, the consent wording, and how the person confirms.
enquiry_fields0 params
Every field of the Mail Merge PDF enquiry: key, label, type, whether required, help text and the allowed options where there are any. Pass answers to submit_enquiry keyed by field key.
submit_enquiry3 params · 2 required
Submits an enquiry to Mail Merge PDF — NOT a purchase, NOT a guaranteed quote. Step 1: call with the answers (keyed by field key from enquiry_fields) and consent=true; it validates and returns a summary, the consent line and a confirmation token — show the person the summary and the consent line. Step 2: only if the person agrees, call again with the same answers, consent=true and the confirmation token; the enquiry is then submitted, and the person receives an email with a link they must click before any provider sees it. Consent means the person has read and agreed to: "Happy for my details to go to document automation suppliers, who'll contact me directly."
- answersobjectrequired
- consentbooleanrequired
- confirmationstring

Availability history

Event log

Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.

3 hours agoServer build: — → 1.0.0
3 hours agoSupported versions: — → 2025-11-25
3 hours agoEra changed: Unknown → Legacy
yesterdayAdded to watch — era: Unknown

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Markdown

[![mcpmetrics](https://mcpmetrics.io/badge/com.mailmergepdf/site/era.svg)](https://mcpmetrics.io/servers/com-mailmergepdf-site)

HTML

<a href="https://mcpmetrics.io/servers/com-mailmergepdf-site"><img src="https://mcpmetrics.io/badge/com.mailmergepdf/site/era.svg" alt="mcpmetrics"></a>

Raw observations

You are seeing the last 7 days. Sign up for the full history. Which check failed and why is in the dashboard.

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https://mailmergepdf.com/mcp

2026-09-13 14:49:35	Legacy	400	921	200	942	2025-11-25
2026-09-13 12:47:19	Unknown	429	252	429	247	—
2026-09-13 10:45:14	Unknown	429	336	429	330	—
2026-09-13 08:43:04	Unknown	429	571	429	675	—
2026-09-13 06:40:42	Unknown	429	371	429	372	—
2026-09-13 04:35:29	Unknown	429	498	429	497	—
2026-09-13 01:33:33	Unknown	429	725	429	712	—
2026-09-12 23:31:36	Unknown	429	616	429	611	—
2026-09-12 21:29:15	Unknown	429	992	429	668	—
2026-09-12 19:27:29	Unknown	429	316	429	282	—

com.mailmergepdf/site

Description

What our measurements say

Agent readability score

Agent readability score

Strengths

Weaknesses

Verdict

Event narrative

Raw observations

Schema compliance

Tools

Availability history

Event log

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Era history

Response time history