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Controls Fellow Aiden smart coffee brewer profiles through natural language, with tools to create, delete, and share brewing recipes.
Do not connect
A critical issue was found. Do not connect this server as-is.
Scanned 8 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 aiden-mcp MCP server exposes 13 tools, focused primarily on web capabilities. Its published description reads: "Controls Fellow Aiden smart coffee brewer profiles through natural language, with tools to create, delete, and share brewing recipes". It communicates over Streamable HTTP using the 2025-06-18 protocol revision, and does not require authorization to connect. MCPGrade currently rates aiden-mcp F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Hidden instructions in a tool description" 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 aiden-mcp's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add aiden-mcp to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://aidenmcp.ravenhoward.org/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 brew profiles currently on your Fellow Aiden, grouped by category (custom, stock, shared). The 14-profile cap applies only to user-created custom profiles.
Create a new brew profile on your Aiden and return a brew.link URL. The profile will appear in the Fellow iOS app immediately. If the device is at its 14-profile cap, you'll get an error — call delete
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: brewing_guidelines
A tool description contains imperative text aimed at the model (e.g. "ignore previous", "before answering read …").
ned principles. IMPORTANT: if the user already has a profile made for thisRecommendationRemove model-directed instructions from tool descriptions.
tool: create_profile
A tool description tries to alter the model’s use of another tool.
an error — call delete_profile first to free a slot.RecommendationDescriptions must describe only their own tool.
tool: delete_profile
A tool description tries to alter the model’s use of another tool.
pemba v2'). Use list_profiles first if you don't know the id.RecommendationDescriptions must describe only their own tool.
tool: share_profile
A tool description tries to alter the model’s use of another tool.
already have. (create_profile already returns a brew.link, so you only need tRecommendationDescriptions must describe only their own tool.
tool: fetch_coffee_details
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
parameter "url"RecommendationRemove side-channel parameters; constrain tool inputs.
tool: brewing_guidelines
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
parameter "tasting_notes"RecommendationRemove side-channel parameters; constrain tool inputs.
tool: brewing_guidelines
A tool description tries to alter the model’s use of another tool.
RecommendationDescriptions must describe only their own tool.
tool: flash_brew
A tool description tries to alter the model’s use of another tool.
Aiden auth. Use brewing_guidelines first for the coffee's profile temps.RecommendationDescriptions must describe only their own tool.
tool: create_schedule
A tool description tries to alter the model’s use of another tool.
leId by calling list_profiles first.RecommendationDescriptions must describe only their own tool.
tool: delete_schedule
A tool description tries to alter the model’s use of another tool.
by its id. Use list_schedules first to find the id.RecommendationDescriptions 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.
tool: create_profile
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "create_profile"RecommendationScope tools to the minimum needed.
tool: update_profile
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "update_profile"RecommendationScope tools to the minimum needed.
tool: delete_profile
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "delete_profile"RecommendationScope tools to the minimum needed.
tool: brewing_guidelines
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "brewing_guidelines"RecommendationScope tools to the minimum needed.
tool: flash_brew
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "flash_brew"RecommendationScope tools to the minimum needed.
tool: create_schedule
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "create_schedule"RecommendationScope tools to the minimum needed.
tool: delete_schedule
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "delete_schedule"RecommendationScope tools to the minimum needed.
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Update an existing brew profile on your Aiden in place. Pass the profile id (or exact title) plus ANY subset of the profile fields you want to change — unspecified fields keep their current values. Us
Delete a brew profile from your Aiden. Pass either the profile id (e.g. 'p10') or the exact title (e.g. 'Mpemba v2'). Use list_profiles first if you don't know the id.
Generate a brew.link URL for an existing profile on your Aiden. Use this to re-share a profile you already have. (create_profile already returns a brew.link, so you only need this for profiles created
Fetch a coffee from a roaster's product page (Counter Culture, Onyx, Sey, Heart, etc. — any Shopify-based roaster) and return structured details: name, varieties, process, elevation, country, tasting
Get Aiden-specific brewing guidelines tailored to a coffee's characteristics. Returns brewing principles + a starting-point recipe. Use this AFTER fetching coffee details (or when user provides them d
Plan a flash brew (Japanese iced coffee) on the Aiden: a hot, concentrated brew directly onto ice in the carafe. The default plan is honest: it sets the profile ratio to the true 1:9-1:12 hot-concentr
List all scheduled brews on your Aiden. Each schedule has a recurrence pattern (which days of the week), a time of day, a profile to brew, and a water amount. Schedules can be enabled/disabled individ
Create a scheduled brew on your Aiden. The Aiden hardware fires the brew at the specified time on the specified days. Time is in DEVICE LOCAL TIME (the timezone configured on the brewer). The schedule
Delete a scheduled brew by its id. Use list_schedules first to find the id.
Enable or disable an existing scheduled brew without deleting it. Useful for pausing a recurring schedule (e.g. weekday morning brew) during vacation.
Get info about your connected Aiden brewer (name, profile count, slot usage). Lightweight call useful for verifying credentials work before doing heavier operations.