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Rules and components for writing HTML email that renders in Outlook, Gmail, and Apple Mail.
Do not connect
A critical issue was found. Do not connect this server as-is.
Scanned 9 days ago Due for re-check
A server can change after it's graded. Re-run the automated scan to refresh this report.
This grade is deterministic and reproducible: the same server surface always yields the same grade under a given algorithm version. It is a real automated assessment computed by the MCPGrade engine from what the probe actually observed — not a fabricated or opinion score. It is not a manual human pentest, so it can miss context-specific risks.
Every signal below was measured directly by the automated probe. The grade is derived only from evidence like this — nothing is assumed.
The email-playbook MCP server exposes 4 tools, focused primarily on general-purpose capabilities. Its published description reads: "Rules and components for writing HTML email that renders in Outlook, Gmail, and Apple Mail". It communicates over Streamable HTTP using the 2026-07-28 protocol revision, and does not require authorization to connect. MCPGrade currently rates email-playbook F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Cross-tool shadowing" and "Cross-tool shadowing". This report is a deterministic, reproducible automated assessment: the same observed surface always yields the same grade under a given algorithm version, and it is refreshed as new scans arrive and free to read — but it is not a substitute for a manual human security review. Always re-check email-playbook's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add email-playbook to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://docs.osamahassouna.com/api/mcpStreamable HTTP transport. This is the MCP endpoint, not a website — paste it into your MCP client server list rather than a browser.
Captured passively during the read-only scan. Click any value to find servers that match it.
The tools this server advertises via tools/list — names, purposes, and the parameters each accepts, exactly as enumerated read-only.
List all rule categories in the Email Playbook with a one-line description and page count. Categories are: structure (head/body container/header/body/footer), compatibility (Outlook MSO, RTL, responsi
Return the full rule pages for a given category. Each rule includes the title, description, markdown body explaining the rule, and any HTML/CSS code examples from the playbook. Use this to teach a mod
List all reusable email components in the playbook with their metadata: name, subcategory (layout/media/interactive/text), description, whether they require Outlook VML, and whether they are responsiv
Return the full record for a single component: title, description, narrative body, the primary HTML pattern, list of slots (placeholders the model should fill), VML/responsive flags, and all code exam
Sorted worst-first. Each finding shows its severity, what it means, its OWASP MCP Top-10 mapping, and a recommended fix — the check id links to the exact methodology row that produced it.
tool: list_categories
A tool description tries to alter the model’s use of another tool.
not returned by get_playbook_rules.RecommendationDescriptions must describe only their own tool.
tool: list_components
A tool description tries to alter the model’s use of another tool.
before calling get_component.RecommendationDescriptions must describe only their own tool.
tool: get_component
A tool description tries to alter the model’s use of another tool.
ples. Use after list_components to fetch the actual HTML pattern to paste intoRecommendationDescriptions must describe only their own tool.
The server accepts tool enumeration (and likely invocation) with no authentication.
RecommendationRequire OAuth 2.1 authorization for any server exposing non-public tools.
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